ENGINE HISTORY AND SPECS
http://www.geocities.com/MotorCity/Pit/9975/dataBySubject/GasolineEngines.html

http://www.babcox.com/editorial/ar/ar400108.htm

TACOMA/TOYOTA PICK-UP GENERAL HISTORY

1964
The Toyota Stout 4x2 is introduced to the American market. This is the first Toyota Pickup available from Toyota in the United States.

1969
Toyota introduces the Hi-Lux 4x2 with a 4 Cylinder 1.9 Liter engine known as the 3R. This Hi-Lux was quite plain compared to today's standards. Trucks at that time were primarily utility vehicles. The inside had only a metal dashboard, and a single bench seat.

1970
Toyota remodels the engine on the Hi-Lux with a 1.8L called the 8R-C.

1972
The 3rd generation Truck engine is released. It is a 2.0L designated 18R-C.

1973
This next model of Hi-Lux, actually released Spring 1972 (therefore a '72 1/2), took on a new look, much less utilitarian. The new car-like design gave it the quality of a Corolla, but retained its Toyota tendencies to be strong, reliable and inexpensive to operate. Styling changes included turn signals removed from the top of the fenders, and built into the body.

As an option on the 1973 Hi-Lux, was a 7.5' bed. Prior to this huge step forward, hauling of this size could only be accomplished by full sized domestic trucks. This combination of a car-like ride and a Long Bed made the Hi-Lux a strong seller.

1974
The Hi-Lux wins the honor of "Pickup Truck of the Year" from Pickup, Van & 4WD.

1975
The 3rd generation Hi-Lux hits the streets powered by a 2.2L version of the 18R-C called the 20R and was also available (for the first time on a Toyota Utility Vehicle) with a 5-speed manual transmission.

1976
The US version of the Hi-Lux looses its name and is now known as the "compact truck" from this point forward.

1977
September 1977, the one-millionth pickup truck rolled out of the factory in Japan.

1979
The SR5 option is now available on the truck. With its 5-speed manual transmission and powerful engine, the SR5 was intended to appeal to a new type of customer, the sport-truck buyer.

The 1979 model changes (noted as the 4th generation) were the biggest yet. The emphasis now was on passenger comfort while retaining its reputation as a true workhorse. The truck came in two wheel bases: short, and long, creating a real customized feel for the consumer.

The biggest development comes as the introduction of 4 wheel drive. Prior to this year, all of the Toyota Trucks were 2 wheel drive. From this point forward, the 4x2 and 4x4 trucks are a separate product line. Most major modifications from this point forward are the same between the 4x2 and 4x4 unless otherwise noted. The biggest exception to this is that the 4WD model was only available in a 4 speed manual transmission. It was modeled after the Land Cruiser, with a solid front axel, leaf springs on all wheels, and a rugged time tested frame. Aftermarket modification kits such as suspension and body lifts, made the Toyota Truck a huge hit with off-roaders.

The brand new 4WD model is a huge hit, winning the "4WD of the Year" award by Pickup, Van $ 4WD, "4WD Vehicle of the Year" by Off-Road, and "Toughest Truck of the Year" by 4x4 and Off-Road Vehicles.

1981
The Toyota "Legend" can now be found under the hood. The 22R engine that has made the Toyota Truck so dependable is born in the form of a 2.4L gasoline engine. In the same year, a 2.2L diesel engine was now available as well. Body modifications included the "one touch" tailgate.

1982
A 5-speed manual transmission is now available on the 4WD Truck.

1984
The 1984 model year represents the 5th generation of the Truck. Changes to the model continue along the car-like feel of the Truck. The Xtracab is now available for storage behind the seats, and the diesel and 22R engines both were available in a turbo-charged version.

4WD Trucks now come with an available option of "Shift on the Fly". This is a system where the front hubs can be locked automatically, without having to exit the vehicle.

1985
4WD Trucks now have an available 4 speed electronically controlled transmission.

1986
With the affordability of gasoline engines, the diesel engines are discontinued. To give the gas engines a little more boost, the Turbo-charged engine was developed. All trucks now come with Independent Front Suspension (IFS).

1989
6th generation trucks roll out available with a brand new V6 engine. With the optional V6, the Toyota Truck is now capable of towing 3500 pounds while still returning excellent gas mileage. "Rusty Bed Syndrome" of the older trucks was solved at this point as well.

Changes in the Truck were few until 1994. Styling was upgraded regularly and new luxury options such as sport seats, air conditioning, and a CD player. The Truck remained as strong and versatile as ever, while still providing everything that a luxury car could.

1995
Toyota introduces an all new pickup truck, designed in Calty, Southern California, and built in Fremont California (at NUMMI) - The Tacoma. The Tacoma featured brand new high performance engines. A 142-horsepower 2.4L four cylinder with 160 lb.-ft. was standard on the 2WD models, while the 4WD models offered a 150 hp. 2.7L four cylinder engine producing 177 lb.-ft. of torque. On both models, an optional 190 hp. 3.4L V6 engine with 220 lb.-ft. of torque was available. This engine would be shared with the T100.

The suspension was new as well. This redesigned suspension offered a coil spring double-wishbone configuration, which replaced the Hi-Trac torsion bar double wishbone suspension of the previous generation. The lower arm uses a closed cross-sectional structure that adds strength while reducing unsprung weight. Suspension travel on the 4WD models increased from 5.9 inches to 7.7 inches, improving both on and off road performance. Tread width on both 2WD and 4WD also increased, improving steering stability and ride comfort. The Tacoma continued to use the reliable leaf type rear suspension with refinements to layout design.

For safety, a standard driver-side airbag, center high mount stop light, adjustable seatbelt anchors, improved side-view mirrors, and optional four-wheel ABS were added. Additionally, the Tacoma received side door impact beams, and three-point, automatic and emergency locking retractor (ALR and ELR) seatbelts in outboard positions, with an ELR seatbelt on the driver's side.

1997
While mechanically unchanged, the 1997 Tacoma gets a redesigned front-end. The headlights were faired into a new grille, and the whole assembly is more aerodynamic and stylish than before.

The 4WD models Tacoma now has an available locking rear differential, bucket seats on non-SR5 Xtracabs, and revised striping on all SR5s.

1998
A passenger-side airbag is added one year prior to the Federal standard of 1999. For increased safety, the passenger-side airbag can be turned off with the ignition key. Accept for a redesigned sound system and the addition of new colors, the 2WD remains unchanged.

4WD models get interior changes including rotary HVAC controls, 2 additional 12 volt power outlets, and repositioned cupholders. Outside the Tacoma, a larger front bumper and restyled grille and headlights along with new overfenders give Tacoma a more aggressive look.

Mid-year, the Tacoma PreRunner is introduced. This new 2WD pickup combines the rugged styling and off-road ability of the 4WD with the affordability of the 2WD model. The PreRunner was developed in conjunction with Toyota Motorsport's successful desert racing truck program. Much of the suspension tuning and development work was done with the assistance of Toyota-drive Ivan "The Ironman" Stewart. The PreRunner shares identical exterior styling with all '98 4WD models. They are available only as Xtracab models with an automatic transmission and a 4 or 6 cylinder engine.

Enhancing the PreRunner and the 4WD off-road ability is an available Toyota Racing Development (TRD) Off-Road package. The package offers a rugged combination of front and rear Bilstein shock absorbers, locking rear differential on V6 models, progressive-rate front coil springs and rear leaf suspension, modified camber rear springs, a larger front stabilizer bar, 31x10.50R15 white lettered Goodyear tires, 15x7" alloy wheels, black overfenders, and special Off-Road graphics.

1999
The Tacoma PreRunner is available in a Regular Cab model with an automatic transmission equipped with the 2.7L 4 cylinder engine.

2000
Standard daytime running lights are added to all models equipped with ABS. Also, the Tacoma StepSide, a sporty package that added a youthful alternative to the Tacoma lineup.

2001
The Tacoma enters a new model year with an aggressive new styling change which include a new front fascia featuring a vertical grille, raised hood, new multi-reflector headlamps, and jeweled tail lamps. Inside, tether anchor brackets have been added to supplement child restraint systems. Also, several new upgrade packages, and 4 new exterior colors.

The Double Cab is introduced. The Tacoma Double Cab delivers the cargo hauling capability of a pickup, the passenger roominess and comfort of an SUV and rugged styling that makes an aggressive statement. The Double Cab is offered in SR5 and Limited trim levels with available off-road package in the 2WD PreRunner series with a 4 or 6 cylinder engine. It offers 11 inches of ground clearance, and a 61" cargo bed. It's 4 large conventional doors open to a well appointed and roomy interior, featuring spacious front and rear seating and a 60/40 fold-down rear bench with 3-point outboard belts.

The Tacoma S-Runner is introduced as a new Sport Truck. The S-Runner is offered in a 4x2 Xtracab trim level with a 5-speed manual overdrive transmission and powered exclusively by Tacoma's 190-hp V6 engine. Performance is enhanced with a low-to-the-ground sports tuned suspension with Tokico gas shock absorbers and stiffer springs, sway bars and bushings. Ground clearance is reduced by 2 inches from the standard 4x2. The

The S-Runner boasts a full color-keyed exterior that includes the grille, lower valence panel, front and rear bumper, overfenders, and outside door handles and mirrors. For an extreme appearance, a dealer-installed Toyota Racing Development (TRD) body kit is available.

The color-keyed exterior is complemented by an aggressive interior feel which includes standard amenities such as front sports and power lumbar driver seat, front seat for and aft adjustable headrests, leather steering wheel and shift knob, tachometer with twin trip meters, AM/FM/Cassette audio with 6 speakers, tilt steering wheel, variable intermittent wipers and a rear console box.

Finally, the latest addition to the Tacoma family is the StepSide. This package is available on regular and Xtracab 4x2 models, powered by either 4 or 6 cylinder engines. The StepSides cargo box is a solid steel unit and the sporty image is enhanced by the use of front fenders, bumper and grille from the Tacoma 4x4.

Notes
So what does Tacoma mean? Tacoma comes from the Salish Indian word for the mountain that provided water to their tribe (later changed to Mount Rainier). The name suggests images of strength and power.

What about PreRunner? Well, PreRunner is a term that refers to a class of vehicle that is used to "pre-run" an off-road race course in order to save the race vehicle for race day. Often these "pre-runner" vehicle are heavily modified 2WD trucks.

The compact trucks (2 and 4WD) are built at the New United Motor Manufacturing, Inc (NUMMI) in Fremont, California, the Honsha Plant in Toyota City, Japan, and all truck beds are produced at TABC in Long Beach, California. 4WD trucks are also built in the Tahara Plant in Tahara, Japan.

All Tacomas are manufactured at NUMMI.

The StepSide pickup truck was co-developed by design engineers at NUMMI, Toyota Motor Sales (TMS) USA, Product Planning Group and Rob Millen Motorsports in Huntington Beach, California.

The above data is provided courtesy of Toyota Motor Company, Inc.

STARTER CLICKS ONCE BUT DOES NOT TURN ENGINE

Q: Often my starter will just click and not turn over the engine. It will do this for a long time, but eventually it will act normally. Is this a common problem with Toyotas? How can I fix it?

A: Yes, it is a common problem with Toyota starters. Many times, the problem is sticking starter solenoid contacts. See the following links for descriptions on how to replace them. This is a really cheap and easy fix on a Tacoma and should be the first thing you try after you check all the cable connections and the battery quality.

http://www.autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/13/e2/1e/0900823d8013e21e.jsp

http://www.automotiveforums.com/vbulletin/showthread.php?t=166530

15 Toyota (NipponDenso now called Denso) starter-repair reference sites:

http://www.off-road.com/4x4web/toyota/tech/starter/ -
http://www.4crawler.com/4x4/CheapTricks/Starter.shtml
http://char.tuiasi.ro/vw/reality/rogerb/4x4/CheapTricks/Starter.html
http://yotarepair.com/startercontacts.html
http://www.toyotaoffroad.net/afertig/88/starterrepair.htm
http://www.4x4wire.com/toyota/maintenance/starter/
http://www.yotatech.com/~corey/tech/haveblue_starter/haveblue.htm
http://www.sleeoffroad.com/technical/tz_starter_rebuild.htm
http://www.startercontacts.com/install.htm
http://www.startercontacts.com/images/OSGR%20Exploded%20view.jpg
http://www.colorado4x4.net/tech/starter_contacts/starter_contacts.html
http://www.barneymc.com/toy_root/techneek/starter.htm
http://perso.wanadoo.fr/adherence.4x4/start_bj.htm
http://www.automotiveforums.com/vbulletin/showthread.php?t=166530
http://www.toyotanation.com/forum/showthread.php?threadid=27312&forumid=10
http://www.toyotanation.com/showthread.php?threadid=27312&forumid=10

Starter contact kits (8mm ID hole):

Ace Electric # S-5263 (only two contacts)
Ace Electric # S-5264 (only two contacts)
Metro # 66-82104 (only two contacts) (www.metroautoinc.com ,Pomona,California)
Toyota # 28226-72010/80 (battery side)(also1KZTE-2LT-1KZT)
Toyota # 28226-72080 (8808-9108)
Toyota # 28226-16130 (9108-9308)
Toyota # 28226-55050 (9308-9511)
Toyota # 28226-70040 (9308-9511)
Toyota # 28226-72040 (motor side if needed)
Toyota # 28226-72010 (8808-9511)
Toyota # 28226-74070 (9108-9511)

For others besides 22R series:

Toyota # 28226-54220 (motor side) (2LTE, 3L..LN13# IKZTE, 2L#, KZN130,LN108,112,85..4FC)
Toyota # 28226-54250 (Diesel Surf 2.4TD, contains a new end cover and gasket)
Toyota # 28226-54320 (battery side) (2LTE, 3L..LN13# IKZTE, 2L#, KZN130, LN108,112,85..4FC,3B-1HZ-BJ73-HZJ7#-1KZT-KZJ70)
Toyota # 28226-17030 (battery side) (1H#-HDJ80-HZJ80)
Toyota # 28226-56250 (battery side) (3B-1HZ-1PZ-PZJ7#)

Starter contacts only (8mm ID hole):

Ace Electric # S-5231
Ace Electric # S-5293 (crescent moon shape)
Ace Electric # S-5295 (crescent moon shape)
Metro # 66-82106 (www.metroautoinc.com ,Pomona,California)
Tons more at:
http://www.metroautoinc.com/PDF%20File/66-Denso%20Solenoid%20Contact.pdf
Toyota # 28226-70040
Wilson’s Electric # 45-29-652

Starter brushes:

AC Delco # D762
GP Sorensen # 255048
Standard # JX-117

Whether your starter uses two rectangular types or one rectangular and one crescent you can substitute with two squares or one square and one crescent so any of the above part #'s for those kits will be the right ones, or about half of the auto electric shops in your local yellow pages would sell aftermarket contacts for only $5 each or the pair.

Thanks to SydneyCanada for the above information


STARTER CLICKS CONTINUOUSLY BUT DOES NOT TURN ENGINE

Q: What if the starter clicks not once, but very fast and does not turn the engine over?

A:The problem you're having is not the solenoid contacts as described above. With bad solenoid contacts, there is only one click (the starter relay), not many. Your problem is insufficient current/voltage getting to the starter.

Most likely cause is a bad battery. Before you buy one, check the battery terminals - make sure they are on tight and they are clean. Check the connections on the other end of the battery cables for tightness and cleanliness also. If all looks good, replace the battery.

If the battery cable connections are bad, loosen them from the battery and clean them with baking soda/water slurry until they are bright metal, then reconnect them and tighten them snug. Coat them with petroleum jelly to prevent them from corrosion.

It it's possible something has been left on, like your headlights or dome light etc. and the battery may be drained/discharged, try charging it first or bring it in to have it tested before you buy a new one.


BLOWER MOTOR FOR HEATER OR A/C DOES NOT WORK ON ALL SPEEDS

Q: My blower motor doesn't work for the bottom three speeds. What is the problem - is it the motor or what?

A: It is most likely a bad connection or bad resistor on the resistor block that controls the current to the motor. See the discussion in the following links:

http://www.automotiveforums.com/vbulletin/showthread.php?t=252829

http://www.4crawler.com/4x4/CheapTricks/Blower.shtml

Thanks to yotarepair.com for alternative instuctional drawings:

TIMING BELT REPLACEMENT INSTRUCTIONS

Q: My engine stopper running suddenly on the highway and now it won't start. Any guesses as to what the problem is? How do I replace my timing belt? What should I replace while I'm in there to save time in the future?

A: It sounds like you may have broken your timing belt. If you can see the cam shafts by looking through the oil filler hole in the head cover, then you can use these as an indicator. If the cams don't turn when the engine is cranked, your timing belt is broken. You may have to remove the valve cover.

Here are links to instructions for replacing the timing belt in various Tacoma engines:

2RZ-FE
Timing Chain

3RZ-FE
Timing Chain

5VZ-FE
http://yotarepair.com/PDF%20files/5VZ-FE_timing_belt_remo.pdf
http://yotarepair.com/PDF%20files/5VZ-FE_timing_belt_inst.pdf

Another procedure:
http://www.4x4wire.com/toyota/maintenance/timing_belt/

Additional Comments on Replacing Timing Belts

Other than the timing belt whether or not you need more parts depends on if there are any fluid leaks inside the timing cover, the water pump may need to be replaced and there may be oil seals such as the front crankshaft seal or the camshaft seals that may be leaking and need to be replaced.

If you do it yourself, make sure you understand how to set #1 piston at TDC on compression stroke. Also, be prepared to stop and put everything back together if you find you cannot remove the crank pulley bolt. I think this is the hardest part from a strength point of view. Air gun is best way. Really long cheater bar with tool to hold the crank is also good. A method of last resort is to position the breaker bar handle on the driver's side frame rail and just tap the starter with the plugs out. If the breaker bar handle is secure, the bolt will loosen. Don't use this method to completely back out the bolt, just to break it loose.

Also, be careful and gentle with the new timing belt. Handle it as if it were a piece of gold foil. Don't bend it sharply, contaminate it with anything, or turn it inside out.

Don't scratch the sensor part of the crankshaft timing pulley.

Don't use the timing belt tension to tighten the mounting bolt of the camshaft timing pulley.

If there is noticeable wear or cracks on the belt face, check to see if there are nicks on the side of the idler pulley lock.

If there is wear or damage on only one side of the belt, check the belt guide and alignment of each pulley.

If there is noticable wear on the belt teeth, check the timing cover for damage, correct gasket installation, and for foreign material on the pulley teeth.

Check to make sure the idler pulley turns smoothly. If not, replace.

Clean all the pulleys and keep them clean.

If you have to turn the crankshaft, always turn it clockwise.

Make sure you have all the gaskets you need. Clean the gasket surfaces to shiny metal everywhere before you replace the gaskets. Replace the timing cover gaskets if they are at all questionable.

Make note of all the electical connections you disconnect when you disconnect them. Make sure they are all connected when you are done (DOH!).

Check the accessory drive belts and replace them if they are old.

Torque everything.


INTERFERENCE ENGINES
Q: What is an interference engine and is my Toyota engine an interference engine? Why should I care?

A: An interference engine is one in which the valves and pistons can touch if the cams and crank are not kept in correct timing by the timing belt or chain. Most (not all) Toyota passenger car engines are free-running (non-interference engines). This means that if your timing belt breaks, then all that will happen is your engine will not run anymore until the belt is replaced. In an interference engine, piston-to-valve contact will cause very serious damage to the engine if the timing belt breaks.

To see if your engine is an interference engine or not, look it up in the following brochure:

http://www.gates.com/downloads/download_common.cfm?file=TBR05.pdf&folder=brochure

An asterisk opposite your engine means it is an interference engine.

SERVICE PUBLICATIONS
Q: Where can I purchase Toyota Service and Repair Manuals for my Tacoma?

A: Printed copies of all Toyota, Scion, and Lexus service support information can be purchased directly from the Toyota Materials Distribution Center or MDC. The MDC stocks printed versions of most Toyota service information products, including legacy model information that is not available on this site.

Note: Certain inventory items are produced in limited quantities and may not be reprinted or reissued once initial inventory is depleted.

MDC telephone operators accept Visa and MasterCard credit card orders, Monday through Friday, 8 AM to 5 PM Pacific Time.

To place orders call 1-800-622-2033

VARIOUS USED MANUALS - mostly older
http://www.autobooksonline.com/

TRANSMISSION REPAIR MANUALS
Q: Where can I purchase transmission repair manuals?

A: http://www.autorepairmanuals.biz/site/573683/page/267592

RENT ONLINE ACCESS TO MANUALS HERE:
http://www.eautorepair.net/
http://www.alldata.com/products/diy/index.html

MAINTENANCE SCHEDULE

Q: How can I find out what maintenance is recommended for my Tacoma at 60k (or whenever)? How much will it cost?

A: Fill out the form on the following site: http://www.edmunds.com/maintenance/MaintenanceServlet?popup=new&tid=edmunds..directoryalpha.directory..1.*

OIL AND OIL-CHANGE INTERVAL, AND OIL FILTER BRAND RECOMMENDATIONS

Q: What is the best motor oil to use in my car and how often should I change it? What is the best brand of oil filter?

A: These questions have more answers and opinions than there are grains of sand on a beach. Read opinions at the following site and become one of the opinionated on these subjects:

http://theoildrop.server101.com/cgi/ultimatebb.cgi

As a general rule, if you want longer oil-change intervals and don't mind paying more for your oil, use an oil with a synthetic base stock such as Mobil 1, Castrol Syntec, etc. Use the oil viscocity that is recommended in your owner's manual.

OIL ANALYSIS AND OIL CHANGE INTERVAL
To determine the optimum oil change frequency for your vehicle requires that you perform several oil analysis during one oil change interval. For example, if your vehicle has 15,000 miles on it and the manufacturer recommends 7500 mile oil changes for normal service and 5000 miles for severe, perform an analysis at 18,750 miles, 20,000 miles, and 22,500 miles (if the first or second test shows a need for an oil change then stop there). Do not exceed the manufacturer's normal service interval even if the analysis shows no need for an oil change at 7500 miles. The oil change industry desperately desires that you NOT perform such an analysis. The almost certain result for most drivers will be that even at 7500 miles the oil will still be fine.

Even after your vehicle is out of warranty it is a good idea to continue to follow the manufacturer's schedule for maintenance. There are frequently special campaigns (not recalls) to fix latent defects after the warranty has expired. Lately we've seen these on some Toyota V6 engines and some Saturn engines. You want the manufacturer to have no excuse to deny coverage. Also you can sometimes get a manufacturer to share the cost of an expensive repair when something fails after the warranty has expired, but this is at their pleasure and it is best to have solid proof that you have followed the maintenance schedules.

Big oil users like bus companies and truck fleets use oil analysis to extend the life of their engines without unnecessary oil changes. The reasons are clear. These big engines can use 3-4 gallons of oil and unnecessary changes are expensive in both time and materials. In some cases they change the filters and put in additives to replace the acid neutralizers and anti-wear agents. A good analogy is swimming pool maintenance. You clean the filters, you remove the debris, you add stabilizers and disinfectants, but you rarely empty the whole pool and refill it.

Two places to get your oil analyzed are:

Lubricon Lubricant Consultants, Inc 350 E. Churchman Ave. Beech Grove, IN 46107 (317) 783-2968

Cleveland Technical Center 18419 Euclid Avenue Cleveland, OH 44112-1016 (800) 726-5400

API CERTIFICATION, PHOSPHOROUS & ZDDP
Never use a non-API certified synthetic oil (there are many of these on the market). The problem with the non-API certified synthetics is that they contain too much phosphorus (in the form of the additive ZDDP (Zinc Dialkyl Dithiophosphates)). The API has limited the amount of phosphorus because phosphorus shortens the life of the catalytic converter. These oils are fine for snowmobiles, motorcycles, and older cars that don't have a catalytic converter, and the extra ZDDP does provide additional wear protection.

Unfortunately, the marketers of some the non-certified oils do not explicitly and honestly state the reason for the lack of API certification. You can check the status of API certification on the API web site. Be certain to go not just by the manufacturer name but by the actual product as well. This is because a manufacturer often have both certified and non-certified products. Suffice it to say that Mobil 1, Royal Purple, Castrol, & Havoline all make synthetic oils that are API certified and that can be purchased at auto parts stores and other retail outlets. AMSOIL has one product line, XL-7500 that is API certified, but it's other lines contain too much ZDDP to be certified and should not be used in vehicles with catalytic converters.

MOTOR OIL MYTHS AND FACTS
http://www.nordicgroup.us/oil.htm

OIL CHANGE PROCEDURE AND RECOMMENDATIONS
http://www.automotiveforums.com/vbulletin/showthread.php?p=3157041#post3157041

OIL FILTER STUDIES

Q: What oil filters are the best?

A: Here are studies performed on various brands of filters. Make your own judgement:

http://www.frankhunt.com/FRANK/corvette/articles/oilfilterstudy/oilfilterstudy.html

http://www.frankhunt.com/FRANK/corvette/articles/oilfilterstudy/oilfilters.html

http://www.scuderiaciriani.com/rx7/oil_filter_study/

http://www.oilfilterstudy.com/

OIL ADDITIVES

Q: What about the various oil additives?

A: Here's a discussion on the subject:
http://www.offroaders.com/tech/snake-oil.htm

In general, lubricating oil contain additive packages that have been certified to provide a minimum level of protection as specified by the specification they meet (SF or whatever). Adding an additive to the oil is something you should do sparingly.

For a discussion of additive packages, see:
http://www.dirtroadmagazine.com/oil.htm

WHAT LUBRICANT TO USE

Q: What lubricants should I use in my '99 Tacoma differential, transmission, engine, etc?

A: Look up your vehicle on the AMSOIL website and look down the list for the lubricant they recommend:

https://www.amsoil.com/scripts/runisa.dll?amsoiloaf:index

Thanks to sanengo and Toysrme for the following ideas:

Want more horsepower? Not enough money for a Turbo/SC?

Q: How do I increase the power of my Tacoma?

A: Performance headers (Not emissions safe)

Installing a performance air filter or cold air intake (CAI) is not a very wise investment for power, but if every bit helps, and you enjoy a more throaty sound, go for it. Get recommendations from others with your engine. Some intakes actually cost you power, but sound louder.

Make sure there is some give to the CAI system. Some CAIs bolt directly to the engine and to the body at each end. When the engine moves, the end bolted to the body has no give and may tear the bolts out of the body where attached.

TRD, AEM, and AMSOIL sell excellent and reusable oil-impregnated air filters. The AEM and TRD filters are the same and are cotton-fiber based. The AMSOIL filter is multi-layer foam.[/edit]

CLEAN YOUR ENGINE TO REGAIN LOST POWER! Carb cleaner and seafoam to start with. GET RID OF ENGINE CARBON! Believe it or not, spraying a small stream of water through the brake booster vacuum line of your engine can clear away carbon deposites VERY efficiently. (Just don't hydrolock your engine, if the engine is choking too much push on the butterfly valve on your TB)

[b]For any vane-flap Toyota vehicle. 22RE's, 3S's, VZ blocks... And most other AFM vehicles.

This is a vane-flap air-flow meter. You slice the silicon glue off the top, and pry the black plastic top off Exposing the innards.

http://img.photobucket.com/albums/v414/Toysrme/Answers/NoReally-NoAirbox.jpg

An AFM. It is not a MAF... They measure the VOLUME of airflow, by a flap, held closed by spring tension. On top of the flap is a small arm, which rotates along what essentially is a pointometer.

The ECU sends an exact voltage to the AFM, and reads the flap. It also reads a small air temperature sensor in the AFM housing. From this -> an AFM can accurately meter the MASS of airflow. (the important part!)

1) Reset the ecu - pull the EFI fuse for one nanosecond and replace it
2) Cut glue
3) Pry UP plastic top
4) PAINT THE STARTING COG
5) Rotate cog clockwise

3 clicks, 5 clicks, 7 clicks seem to be where people like. As soon as you get over the shock factor, most of the gain is 5-7 clicks.

http://img.photobucket.com/albums/v414/Toysrme/Answers/AFM-4.jpg

You'll gain mid rpm range power. You'll also gain top rpm range power under a high load (i.e. top gear-top speed runs). Don't be surprised if you rev back to back in park and it's a tad slower from less fuel -> it will be noticeably faster on the street when there is a load on the engine.

BRAKE LININGS

Q: What are the best brake linings for my Tacoma? Are there any things I should watch out for in changing them?

A: The Toyota OEM linings are very good and I recommend them for most uses - I use them exclusively. They are quiet, have good life, and don't trash the rotor/drum. Ceramic linings have been recommended to me, but I haven't tried them. Cheap asbestos linings generally sound like Cooter's Hell when you are stopping and should be used only if you and anyone riding in your car are deaf.

You should refinish the rotors if there are any grooves worn in the rotors or if there is any side-to-side wobble (runout). Drums always have to be refinished.

Also, be careful not to inhale brake dust from the old pads. Don't blow the dust with your lungs or compressed air to clean the brake parts. Clean the old backing plate, rotor, caliper, etc. with a spray brake cleaner. Use a drip pan to catch the run-off.

Always use new springs for the drum brakes. Use high temperature brake grease on all pivot points in drum braking systems.

Don't get any liquid on the brake linings or they will be garbage. Don't even touch the linings with your fingers.

Watch for wetness around the wheel cylinders, particularly inside behind the dust shields. The cylinders have to be honed or replaced if they leak at all.

Flush your brake system periodically to get rid of water and contaminents. These lower the boiling point of the brake fluid and can cause brake failure or pitting of the wheel cylinders.

Back off the star wheels on the bottom of the drum mechanism to allow the brake linings to clear the ridge created by drug wear. Use two screwdrivers or other bladed tools that fit in the oval opening covered by the rubber boot.

Last but not least, after you change your linings, drive your car like your grandmother for a week or two. This finish cures the brake lining material and will give you a much longer brake life.

PULSATING BRAKE PEDAL

Q:I 've noticed this problem for quite a while. The brake pedal shakes (vibrates) when braking at or above 50 mph. It happens every time i go down a long slope or on highway. The streering wheel shakes a little bit too. It does not happen below 40 mph. I change the brake pads (front) this March and it did not fix the problem. So what can be the problem? Thanks

A: Your brake rotor runout is excessive. basically they're warped

Q: Then what work needs to be done? Replace the rotors or resurface them?

A: You are correct; resurface them if there is enough meat left on them (wherever you take them to be cut will check the thickness first) or replace them with new ones. If there is plenty of pad left, just sand the pads lightly so they will seat better to the new rotor surface

How brakes work:
http://auto.howstuffworks.com/brake.htm

How disc brakes work:
http://auto.howstuffworks.com/disc-brake.htm

How drum brakes work:
http://auto.howstuffworks.com/drum-brake.htm

How anti-lock brakes work:
http://auto.howstuffworks.com/anti-lock-brake.htm

Here are general discussions on the topic:

http://www.babcox.com/editorial/ic/ic20316.htm
http://www.asbestos-institute.ca/safemanual/section5/section5d.html
http://www.mightyautoparts.com/pdf/articles/tt68.pdf

TIRE SIZE COMPENSATION CALCULATOR

Q: Please tell me how to calculate the speedometer error if I go to different than stock tire diameters.

A: Here is a calculator just for that purpose:
http://www.miata.net/garage/tirecalc.html

REPROGRAMMING REMOTE ENTRY
http://www.automotiveforums.com/vbulletin/showthread.php?t=126305&page=1&pp=15

http://www.automotiveforums.com/vbulletin/showthread.php?t=73219

http://www.automotiveforums.com/vbulletin/showthread.php?t=383114

http://www.automotiveforums.com/vbulletin/showthread.php?t=367962

http://www.automotiveforums.com/vbulletin/showthread.php?t=348186

http://www.automotiveforums.com/vbulletin/showthread.php?t=360771

http://www.automotiveforums.com/vbulletin/showthread.php?t=172063

ECT

Q: What does the button on my console labeled "ECT" do?

A: ECT is an abreviation for "Electronically Controlled Transmission". The button has two positions, "POWER" and "NORMAL". When switched to the "POWER" position, the ECM shifts the transmission at higher engine rpm in every gear. It also affects the function of the torque converter lock-up mechanism.

For further discussion see the following thread:

http://www.automotiveforums.com/vbulletin/showthread.php?t=128958&page=1&pp=15

With regard to the stiffness of the upshifts, in all of the transmissions, as the throttle angle rises, more pressure is built up. This does not change the maximum pressure exerted during the shift, or while in gear. Thus the shift stiffness is unchanged in either ECT mode.

(Thanks to Toysrme for adding the above clarification on shift stiffness.)

OVERDRIVE

Q: What is the function of the overdrive? Is it a separate unit or actually part of my transmission? What happens when I push the button on the side of my shifter and light the "O/D OFF" indicator?

A: The overdrive is the highest (lowest numerically) gear in your transmission, by definition higher geared than 1:1 or direct drive - and it is integral with your transmission. When you push the button on the shifter and light the "O/D OFF" indicator, you prevent your transmission from engaging the O/D gear and it stays in the next highest gear.

Preventing OD from engaging is useful when you are in stop and go traffic and never get above 30 mph for any length of time. Then, the only time you engage the O/D gear is when you let off the accelerator - causing the transmission to make an unnecessary upshift when you are slowing down. It is also useful to disengage the O/D when you are in hilly country or towing and find your transmission is not able to stay in the high gear. It is better to maintain the next highest gear by turning off the O/D than to have the transmission searching for the correct gear.

How an automatic transmission works:
http://auto.howstuffworks.com/automatic-transmission.htm

TSBs: TECH SERVICE BULLETINS

Q: Where can I find Tech Service Bulletins for my Tacoma?
A: http://www.alldata.com/tsb/Toyota/index-issue.html

http://www.edmunds.com/maintenance/MaintenanceServlet

http://www-odi.nhtsa.dot.gov/cars/problems/tsb/

http://www.infotraxx.com/?a_aid=15&a_bid=3

http://www.alldata.com/recalls/

CHECK ENGINE LIGHT IN '98 Tacoma

Q: My '98 Tacoma check engine light has just come on recently. I've never seen it on until now and I don't know why. The car has 148k miles on it, what could be the problem? How can I check the code? Is there a reset button or anything I can do? Any help is appreciated. TIA.

A: Your truck is OBDII compliant which means you need a code reader.

http://www.iequus.com/assets/manuals/3100E.pdf

Q: Can I purchase a reader at any autoshop? How much are they?

A: You need an adapter that is specific for Toyota. Most readers will work with the appropriate adapter. I have had trouble finding the right adapter at my local stores. I think online is the best place to buy one.

I think prices are $100 on up. One that monitors engine functions is particularly useful - feeds data into computer like notebook or hand-held pc.

If you live near an Autozone store, they will check it for free.

Q: I went to a Autozone store and they said that they could only do 96 and up. Is that true?

A: 1996 and later cars have to be OBDII compliant. Toyota made some of their 1994 and 1995 vehicles OBDII compliant. If your car is, then point it out to him and they should check it. Check your emissions sticker under the hood. It will tell you if your car is OBDII compliant or not.

OBDII DTC CODES

A primer on OBDII DTC codes:
http://www.overboost.com/story.asp?id=1286&r=1

Here are a list of generic and Toyota-specific DTC codes from http://www.iequus.com/assets/manuals/3100E.pdf

DTC Codes in BOLD have troubleshooting guide at the end of this post.

The above document also provided Manufacturer-specific DTC codes for Honda, General Motors, Ford, and Chrysler.

DIAGNOSTIC TROUBLE CODE DEFINITIONS
The following Diagnostic Trouble Code Definitions lists represent the most complete information currently available. OBD II is an evolving system, and new codes and definitions will be added as the system matures. ALWAYS consult the vehicle’s service manual for code definitions not included in these lists.

The following code definition lists provide both Generic Diagnostic Trouble Code Definitions and Manufacturer-Specific Diagnostic Trouble Code Definitions for the following vehicles:

• OBD II Powertrain “GENERIC” (P0XXX) Diagnostic Trouble Codes. OBD II Generic Diagnostic Trouble Codes and their definitions apply to all makes and models of import and domestic vehicles that are “OBD II COMPLIANT”.

• OBD II Powertrain “MANUFACTURER SPECIFIC” (P1XXX) Diagnostic Trouble Codes. OBD II Manufacturer-Specific Diagnostic Trouble Codes and their definitions apply only to vehicles produced by the specific manufacturer (Ford, GM, Toyota etc.).

GENERIC OBD II CODE DEFINITIONS
P0010 "A" Camshaft Position Actuator Circuit (Bank 1)
P0011 "A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)
P0012 "A" Camshaft Position - Timing Over-Retarded (Bank 1)
P0013 "B" Camshaft Position - Actuator Circuit (Bank 1)
P0014 "B" Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)
P0015 "B" Camshaft Position - Timing Over-Retarded (Bank 1)
P0020 "A" Camshaft Position Actuator Circuit (Bank 2)
P0021 "A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 2)
P0022 "A" Camshaft Position - Timing Over-Retarded (Bank 2)
P0023 "B" Camshaft Position - Actuator Circuit (Bank 2)
P0024 "B" Camshaft Position - Timing Over-Advanced or System Performance (Bank 2)
P0025 "B" Camshaft Position - Timing Over-Retarded (Bank 2)
P0030 HO2S Heater Control Circuit (Bank 1 Sensor 1)
P0031 HO2S Heater Control Circuit Low (Bank 1 Sensor 1)
P0032 HO2S Heater Control Circuit High (Bank 1 Sensor 1)
P0033 Turbo Charger Bypass Valve Control Circuit
P0034 Turbo Charger Bypass Valve Control Circuit Low
P0035 Turbo Charger Bypass Valve Control Circuit High
P0036 HO2S Heater Control Circuit (Bank 1 Sensor 2)
P0037 HO2S Heater Control Circuit Low (Bank 1 Sensor 2)
P0038 HO2S Heater Control Circuit High (Bank 1 Sensor 2)
P0042 HO2S Heater Control Circuit (Bank 1 Sensor 3)
P0043 HO2S Heater Control Circuit Low (Bank 1 Sensor 3)
P0044 HO2S Heater Control Circuit High (Bank 1 Sensor 3)
P0050 HO2S Heater Control Circuit (Bank 2 Sensor 1)
P0051 HO2S Heater Control Circuit Low (Bank 2 Sensor 1)
P0052 HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0056 HO2S Heater Control Circuit (Bank 2 Sensor 2)
P0057 HO2S Heater Control Circuit Low (Bank 2 Sensor 2)
P0058 HO2S Heater Control Circuit High (Bank 2 Sensor 2)
P0062 HO2S Heater Control Circuit (Bank 2 Sensor 3)
P0063 HO2S Heater Control Circuit Low (Bank 2 Sensor 3)
P0064 HO2S Heater Control Circuit High (Bank 2 Sensor 3)
P0065 Air Assisted Injector Control Range/Performance
P0066 Air Assisted Injector Control Circuit or Circuit Low
P0067 Air Assisted Injector Control Circuit High
P0070 Ambient Air Temperature Sensor Circuit
P0071 Ambient Air Temperature Sensor Range/Performance
P0072 Ambient Air Temperature Sensor Circuit Low Input
P0073 Ambient Air Temperature Sensor Circuit High Input
P0074 Ambient Air Temperature Sensor Circuit Intermittent
P0075 Intake Valve Control Solenoid Circuit (Bank 1)
P0076 Intake Valve Control Solenoid Circuit Low (Bank 1)
P0077 Intake Valve Control Solenoid Circuit High (Bank 1)
P0078 Exhaust Valve Control Solenoid Circuit (Bank 1)
P0079 Exhaust Valve Control Solenoid Circuit Low (Bank 1)
P0080 Exhaust Valve Control Solenoid Circuit High (Bank 1)
P0081 Intake Valve Control Solenoid Circuit (Bank 2)
P0082 Intake Valve Control Solenoid Circuit Low (Bank 2)
P0083 Intake Valve Control Solenoid Circuit High (Bank 2)
P0084 Exhaust Valve Control Solenoid Circuit (Bank 2)
P0085 Exhaust Valve Control Solenoid Circuit Low (Bank 2)
P0086 Exhaust Valve Control Solenoid Circuit High (Bank 2)

P0100 Mass or Volume Air Flow Circuit Malfunction
P0101 Mass or Volume Circuit Range Performance Problem
P0102 Mass or Volume Circuit Low Input
P0103 Mass or Volume Circuit High Input
P0104 Mass or Volume Circuit Intermittent
P0105 Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction
P0106 Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
P0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
P0108 Manifold Absolute Pressure/Barometric Pressure Circuit High Input
P0109 Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent
P0110 Intake Air Temperature Circuit Malfunction
P0111 Intake Air Temperature Circuit Range/Performance Problem
P0112 Intake Air Temperature Circuit Low Input
P0113 Intake Air Temperature Circuit High Input
P0114 Intake Air Temperature Circuit Intermittent
P0115 Engine Coolant Temperature Circuit Malfunction
P0116 Engine Coolant Temperature Circuit Range/Performance Problem
P0117 Engine Coolant Temperature Circuit Low Input
P0118 Engine Coolant Temperature Circuit High Input
P0119 Engine Coolant Temperature Circuit Intermittent
P0120 Throttle/Pedal Position Sensor/Switch A Circuit Malfunction
P0121 Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance Problem
P0122 Throttle/Pedal Position Sensor/Switch A Circuit Low Input
P0123 Throttle/Pedal Position Sensor/Switch A Circuit High Input
P0124 Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control
P0126 Insufficient Coolant Temperature for Stable Operation
P0127 Intake Air Temperature Too High
P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
P0130 O2 Sensor Circuit Malfunction (Bank 1 Sensor 1)
P0131 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
P0132 O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)
P0133 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)
P0134 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
P0135 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P0136 O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)
P0137 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)
P0138 O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)
P0139 O2 Sensor Circuit Slow Response (Bank 1 Sensor 2)
P0140 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)
P0141 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
P0142 O2 Sensor Circuit Malfunction (Bank 1 Sensor 3)
P0143 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 3)
P0144 O2 Sensor Circuit High Voltage (Bank 1 Sensor 3)
P0145 O2 Sensor Circuit Slow Response (Bank 1 Sensor 3)
P0146 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 3)
P0147 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 3)
P0148 Fuel Delivery Error
P0149 Fuel Timing Error
P0150 O2 Sensor Circuit Malfunction (Bank 2 Sensor 1)
P0151 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
P0152 O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)
P0153 O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)
P0154 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
P0155 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
P0156 O2 Sensor Circuit Malfunction (Bank 2 Sensor 2)
P0157 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)
P0158 O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)
P0159 O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)
P0160 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
P0161 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
P0162 O2 Sensor Circuit Malfunction (Bank 2 Sensor 3)
P0163 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 3)
P0164 O2 Sensor Circuit High Voltage (Bank 2 Sensor 3)
P0165 O2 Sensor Circuit Slow Response (Bank 2 Sensor 3)
P0166 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 3)
P0167 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 3)
P0168 Fuel Temperature Too High
P0169 Incorrect Fuel Composition
P0170 Fuel Trim Malfunction (Bank 1)
P0171 System too Lean (Bank 1)
P0172 System too Rich (Bank 1)
P0173 Fuel Trim Malfunction (Bank 2)
P0174 System too Lean (Bank 2)
P0175 System too Rich (Bank 2)
P0176 Fuel Composition Sensor Circuit Malfunction
P0177 Fuel Composition Sensor Circuit Range/Performance
P0178 Fuel Composition Sensor Circuit Low Input
P0179 Fuel Composition Sensor Circuit High Input
P0180 Fuel Temperature Sensor A Circuit Malfunction
P0181 Fuel Temperature Sensor A Circuit Range/Performance
P0182 Fuel Temperature Sensor A Circuit Low Input
P0183 Fuel Temperature Sensor A Circuit High Input
P0184 Fuel Temperature Sensor A Circuit Intermittent
P0185 Fuel Temperature Sensor B Circuit Malfunction
P0186 Fuel Temperature Sensor B Circuit Range/Performance
P0187 Fuel Temperature Sensor B Circuit Low Input
P0188 Fuel Temperature Sensor B Circuit High Input
P0189 Fuel Temperature Sensor B Circuit Intermittent
P0190 Fuel Rail Pressure Sensor Circuit Malfunction
P0191 Fuel Rail Pressure Sensor Circuit Range/Performance
P0192 Fuel Rail Pressure Sensor Circuit Low Input
P0193 Fuel Rail Pressure Sensor Circuit High Input
P0194 Fuel Rail Pressure Sensor Circuit Intermittent
P0195 Engine Oil Temperature Sensor Malfunction
P0196 Engine Oil Temperature Sensor Range/Performance
P0197 Engine Oil Temperature Sensor Low
P0198 Engine Oil Temperature Sensor High
P0199 Engine Oil Temperature Sensor Intermittent

P0200 Injector Circuit Malfunction
P0201 Injector Circuit Malfunction - Cylinder 1
P0202 Injector Circuit Malfunction - Cylinder 2
P0203 Injector Circuit Malfunction - Cylinder 3
P0204 Injector Circuit Malfunction - Cylinder 4
P0205 Injector Circuit Malfunction - Cylinder 5
P0206 Injector Circuit Malfunction - Cylinder 6
P0207 Injector Circuit Malfunction - Cylinder 7
P0208 Injector Circuit Malfunction - Cylinder 8
P0209 Injector Circuit Malfunction - Cylinder 9
P0210 Injector Circuit Malfunction - Cylinder 10
P0211 Injector Circuit Malfunction - Cylinder 11
P0212 Injector Circuit Malfunction - Cylinder 12
P0213 Cold Start Injector 1 Malfunction
P0214 Cold Start Injector 2 Malfunction
P0215 Engine Shutoff Solenoid Malfunction
P0216 Injection Timing Control Circuit Malfunction
P0217 Engine Overtemp Condition
P0218 Transmission Over Temperature Condition
P0219 Engine Overspeed Condition
P0220 Throttle/Pedal Position Sensor/Switch B Circuit Malfunction
P0221 Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance Problem
P0222 Throttle/Pedal Position Sensor/Switch B Circuit Low Input
P0223 Throttle/Pedal Position Sensor/Switch B Circuit High Input
P0224 Throttle/Pedal Position Sensor/Switch B Circuit Intermittent
P0225 Throttle/Pedal Position Sensor/Switch C Circuit Malfunction
P0226 Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance Problem
P0227 Throttle/Pedal Position Sensor/Switch C Circuit Low Input
P0228 Throttle/Pedal Position Sensor/Switch C Circuit High Input
P0229 Throttle/Pedal Position Sensor/Switch C Circuit Intermittent
P0230 Fuel Pump Primary Circuit Malfunction
P0231 Fuel Pump Secondary Circuit Low
P0232 Fuel Pump Secondary Circuit High
P0233 Fuel Pump Secondary Circuit Intermittent
P0234 Engine Overboost Condition
P0235 Turbocharger Boost Sensor A Circuit Malfunction
P0236 Turbocharger Boost Sensor A Circuit Range/Performance
P0237 Turbocharger Boost Sensor A Circuit Low
P0238 Turbocharger Boost Sensor A Circuit High
P0239 Turbocharger Boost Sensor B Circuit Malfunction
P0240 Turbocharger Boost Sensor B Circuit Range/Performance
P0241 Turbocharger Boost Sensor B Circuit Low
P0242 Turbocharger Boost Sensor B Circuit High
P0243 Turbocharger Wastegate Solenoid A Malfunction
P0244 Turbocharger Wastegate Solenoid A Range/Performance
P0245 Turbocharger Wastegate Solenoid A Low
P0246 Turbocharger Wastegate Solenoid A High
P0247 Turbocharger Wastegate Solenoid B Malfunction
P0248 Turbocharger Wastegate Solenoid B Range/Performance
P0249 Turbocharger Wastegate Solenoid B Low
P0250 Turbocharger Wastegate Solenoid B High
P0251 Injection Pump A Rotor/Cam Malfunction
P0252 Injection Pump A Rotor/Cam Range/Performance
P0253 Injection Pump A Rotor/Cam Low
P0254 Injection Pump A Rotor/Cam High
P0255 Injection Pump A Rotor/Cam Intermitted
P0256 Injection Pump B Rotor/Cam Malfunction
P0257 Injection Pump B Rotor/Cam Range/Performance
P0258 Injection Pump B Rotor/Cam Low
P0259 Injection Pump B Rotor/Cam High
P0260 Injection Pump B Rotor/Cam Intermitted
P0261 Cylinder 1 Injector Circuit Low
P0262 Cylinder 1 Injector Circuit High
P0263 Cylinder 1 Contribution/Balance Fault
P0264 Cylinder 2 Injector Circuit Low
P0265 Cylinder 2 Injector Circuit High
P0266 Cylinder 2 Contribution/Balance Fault
P0267 Cylinder 3 Injector Circuit Low
P0268 Cylinder 3 Injector Circuit High
P0269 Cylinder 3 Contribution/Balance Fault
P0270 Cylinder 4 Injector Circuit Low
P0271 Cylinder 4 Injector Circuit High
P0272 Cylinder 4 Contribution/Balance Fault
P0273 Cylinder 5 Injector Circuit Low
P0274 Cylinder 5 Injector Circuit High
P0275 Cylinder 5 Contribution/Balance Fault
P0276 Cylinder 6 Injector Circuit Low
P0277 Cylinder 6 Injector Circuit High
P0278 Cylinder 6 Contribution/Balance Fault
P0279 Cylinder 7 Injector Circuit Low
P0280 Cylinder 7 Injector Circuit High
P0281 Cylinder 7 Contribution/Balance Fault
P0282 Cylinder 8 Injector Circuit Low
P0283 Cylinder 8 Injector Circuit High
P0284 Cylinder 8 Contribution/Balance Fault
P0285 Cylinder 9 Injector Circuit Low
P0286 Cylinder 9 Injector Circuit High
P0287 Cylinder 9 Contribution/Balance Fault
P0288 Cylinder 10 Injector Circuit Low
P0289 Cylinder 10 Injector Circuit High
P0290 Cylinder 10 Contribution/Balance Fault
P0291 Cylinder 11 Injector Circuit Low
P0292 Cylinder 11 Injector Circuit High
P0293 Cylinder 11 Contribution/Balance Fault
P0294 Cylinder 12 Injector Circuit Low
P0295 Cylinder 12 Injector Circuit High
P0296 Cylinder 12 Contribution/Balance Fault
P0298 Engine Oil Over Temperature

P0300 Random/Multiple Cylinder Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0302 Cylinder 2 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0304 Cylinder 4 Misfire Detected
P0305 Cylinder 5 Misfire Detected
P0306 Cylinder 6 Misfire Detected
P0307 Cylinder 7 Misfire Detected
P0308 Cylinder 8 Misfire Detected
P0309 Cylinder 9 Misfire Detected
P0310 Cylinder 10 Misfire Detected
P0311 Cylinder 11 Misfire Detected
P0312 Cylinder 12 Misfire Detected
P0313 Misfire Detected with Low Fuel
P0314 Single Cylinder Misfire (Cylinder not specified)
P0320 Ignition/Distributor Engine Speed Input Circuit Malfunction
P0321 Ignition/Distributor Engine Speed Input Circuit Range/Performance
P0322 Ignition/Distributor Engine Speed Input Circuit No Signal
P0323 Ignition/Distributor Engine Speed Input Circuit Intermittent
P0324 Knock Control System Error
P0325 Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)
P0326 Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor)
P0327 Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)
P0328 Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)
P0329 Knock Sensor 1 Circuit Intermittent (Bank 1 or Single Sensor)
P0330 Knock Sensor 2 Circuit Malfunction (Bank 2)
P0331 Knock Sensor 2 Circuit Range/Performance (Bank 2)
P0332 Knock Sensor 2 Circuit Low Input (Bank 2)
P0333 Knock Sensor 2 Circuit High Input (Bank 2)
P0334 Knock Sensor 2 Circuit Intermittent (Bank 2)
P0335 Crankshaft Position Sensor A Circuit Malfunction
P0336 Crankshaft Position Sensor A Circuit Range/Performance
P0337 Crankshaft Position Sensor A Circuit Low Input
P0338 Crankshaft Position Sensor A Circuit High Input
P0339 Crankshaft Position Sensor A Circuit Intermittent
P0340 Camshaft Position Sensor Circuit Malfunction
P0341 Camshaft Position Sensor Circuit Range/Performance
P0342 Camshaft Position Sensor Circuit Low Input
P0343 Camshaft Position Sensor Circuit High Input
P0344 Camshaft Position Sensor Circuit Intermittent
P0345 Camshaft Position Sensor "A" Circuit (Bank 2)
P0346 Camshaft Position Sensor "A" Circuit Range/Performance (Bank 2)
P0347 Camshaft Position Sensor "A" Circuit Low Input (Bank 2)
P0348 Camshaft Position Sensor "A" Circuit High Input (Bank 2)
P0349 Camshaft Position Sensor "A" Circuit Intermittent (Bank 2)
P0350 Ignition Coil Primary/Secondary Circuit Malfunction
P0351 Ignition Coil A Primary/Secondary Circuit Malfunction
P0352 Ignition Coil B Primary/Secondary Circuit Malfunction
P0353 Ignition Coil C Primary/Secondary Circuit Malfunction
P0354 Ignition Coil D Primary/Secondary Circuit Malfunction
P0355 Ignition Coil E Primary/Secondary Circuit Malfunction
P0356 Ignition Coil F Primary/Secondary Circuit Malfunction
P0357 Ignition Coil G Primary/Secondary Circuit Malfunction
P0358 Ignition Coil H Primary/Secondary Circuit Malfunction
P0359 Ignition Coil I Primary/Secondary Circuit Malfunction
P0360 Ignition Coil J Primary/Secondary Circuit Malfunction
P0361 Ignition Coil K Primary/Secondary Circuit Malfunction
P0362 Ignition Coil L Primary/Secondary Circuit Malfunction
P0365 Camshaft Position Sensor "B" Circuit (Bank 1)
P0366 Camshaft Position Sensor "B" Circuit Range/Performance (Bank 1)
P0367 Camshaft Position Sensor "B" Circuit Low Input (Bank 1)
P0368 Camshaft Position Sensor "B" Circuit High Input (Bank 1)
P0369 Camshaft Position Sensor "B" Circuit Intermittent (Bank 1)
P0370 Timing Reference High Resolution Signal A Malfunction
P0371 Timing Reference High Resolution Signal A Too Many Pulses
P0372 Timing Reference High Resolution Signal A Too Few Pulses
P0373 Timing Reference High Resolution Signal A Intermittent/ Erratic Pulses
P0374 Timing Reference High Resolution Signal A No Pulses
P0375 Timing Reference High Resolution Signal B Malfunction
P0376 Timing Reference High Resolution Signal B Too Many Pulses
P0377 Timing Reference High Resolution Signal B Too Few Pulses
P0378 Timing Reference High Resolution Signal B Intermittent/ Erratic Pulses
P0379 Timing Reference High Resolution Signal B No Pulses
P0380 Glow Plug/Heater Circuit Malfunction
P0381 Glow Plug/Heater Indicator Circuit Malfunction
P0382 Glow Plug/Heater Circuit "B" Malfunction
P0385 Crankshaft Position Sensor B Circuit Malfunction
P0386 Crankshaft Position Sensor B Circuit Range/Performance
P0387 Crankshaft Position Sensor B Circuit Low Input
P0388 Crankshaft Position Sensor B Circuit High Input
P0389 Crankshaft Position Sensor B Circuit Intermittent
P0390 Camshaft Position Sensor "B" Circuit (Bank 2)
P0391 Camshaft Position Sensor "B" Circuit Range/Performance (Bank 2)
P0392 Camshaft Position Sensor "B" Circuit Low Input (Bank 2)
P0393 Camshaft Position Sensor "B" Circuit High Input (Bank 2)
P0394 Camshaft Position Sensor "B" Circuit Intermittent (Bank 2)

P0400 Exhaust Gas Recirculation Flow Malfunction
P0401 Exhaust Gas Recirculation Flow Insufficient Detected
P0402 Exhaust Gas Recirculation Flow Excessive Detected
P0403 Exhaust Gas Recirculation Circuit Malfunction
P0404 Exhaust Gas Recirculation Circuit Range/Performance
P0405 Exhaust Gas Recirculation Sensor A Circuit Low
P0406 Exhaust Gas Recirculation Sensor A Circuit High
P0407 Exhaust Gas Recirculation Sensor B Circuit Low
P0408 Exhaust Gas Recirculation Sensor B Circuit High
P0409 Exhaust Gas Recirculation Sensor "A" Circuit
P0410 Secondary Air Injection System Malfunction
P0411 Secondary Air Injection System Incorrect Flow Detected
P0412 Secondary Air Injection System Switching Valve A Circuit Malfunction
P0413 Secondary Air Injection System Switching Valve A Circuit Open
P0414 Secondary Air Injection System Switching Valve A Circuit Shorted
P0415 Secondary Air Injection System Switching Valve B Circuit Malfunction
P0416 Secondary Air Injection System Switching Valve B Circuit Open
P0417 Secondary Air Injection System Switching Valve B Circuit Shorted
P0418 Secondary Air Injection System Relay "A" Circuit Malfunction
P0419 Secondary Air Injection System Relay "B" Circuit Malfunction
P0420 Catalyst System Efficiency Below Threshold (Bank 1)
P0421 Warm Up Catalyst Efficiency Below Threshold (Bank 1)
P0422 Main Catalyst Efficiency Below Threshold (Bank 1)
P0423 Heated Catalyst Efficiency Below Threshold (Bank 1)
P0424 Heated Catalyst Temperature Below Threshold (Bank 1)
P0425 Catalyst Temperature Sensor (Bank 1)
P0426 Catalyst Temperature Sensor Range/Performance (Bank 1)
P0427 Catalyst Temperature Sensor Low Input (Bank 1)
P0428 Catalyst Temperature Sensor High Input (Bank 1)
P0429 Catalyst Heater Control Circuit (Bank 1)
P0430 Catalyst System Efficiency Below Threshold (Bank 2)
P0431 Warm Up Catalyst Efficiency Below Threshold (Bank 2)
P0432 Main Catalyst Efficiency Below Threshold (Bank 2)
P0433 Heated Catalyst Efficiency Below Threshold (Bank 2)
P0434 Heated Catalyst Temperature Below Threshold (Bank 2)
P0435 Catalyst Temperature Sensor (Bank 2)
P0436 Catalyst Temperature Sensor Range/Performance (Bank 2)
P0437 Catalyst Temperature Sensor Low Input (Bank 2)
P0438 Catalyst Temperature Sensor High Input (Bank 2)
P0439 Catalyst Heater Control Circuit (Bank 2)
P0440 Evaporative Emission Control System Malfunction
P0441 Evaporative Emission Control System Incorrect Purge Flow
P0442 Evaporative Emission Control System Leak Detected (small leak)
P0443 Evaporative Emission Control System Purge Control Valve Circuit Malfunction
P0444 Evaporative Emission Control System Purge Control Valve Circuit Open
P0445 Evaporative Emission Control System Purge Control Valve Circuit Shorted
P0446 Evaporative Emission Control System Vent Control Circuit Malfunction
P0447 Evaporative Emission Control System Vent Control Circuit Open
P0448 Evaporative Emission Control System Vent Control Circuit Shorted
P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction
P0450 Evaporative Emission Control System Pressure Sensor Malfunction
P0451 Evaporative Emission Control System Pressure Sensor Range/Performance
P0452 Evaporative Emission Control System Pressure Sensor Low Input
P0453 Evaporative Emission Control System Pressure Sensor High Input
P0454 Evaporative Emission Control System Pressure Sensor Intermittent
P0455 Evaporative Emission Control System Leak Detected (gross leak)
P0456 Evaporative Emission Control System Leak Detected (very small leak)
P0457 Evaporative Emission Control System Leak Detected (fuel cap loose/off)
P0460 Fuel Level Sensor Circuit Malfunction
P0461 Fuel Level Sensor Circuit Range/Performance
P0462 Fuel Level Sensor Circuit Low Input
P0463 Fuel Level Sensor Circuit High Input
P0464 Fuel Level Sensor Circuit Intermittent
P0465 Purge Flow Sensor Circuit Malfunction
P0466 Purge Flow Sensor Circuit Range/Performance
P0467 Purge Flow Sensor Circuit Low Input
P0468 Purge Flow Sensor Circuit High Input
P0469 Purge Flow Sensor Circuit Intermittent
P0470 Exhaust Pressure Sensor Malfunction
P0471 Exhaust Pressure Sensor Range/Performance
P0472 Exhaust Pressure Sensor Low
P0473 Exhaust Pressure Sensor High
P0474 Exhaust Pressure Sensor Intermittent
P0475 Exhaust Pressure Control Valve Malfunction
P0476 Exhaust Pressure Control Valve Range/Performance
P0477 Exhaust Pressure Control Valve Low
P0478 Exhaust Pressure Control Valve High
P0479 Exhaust Pressure Control Valve Intermittent
P0480 Cooling Fan 1 Control Circuit Malfunction
P0481 Cooling Fan 2 Control Circuit Malfunction
P0482 Cooling Fan 3 Control Circuit Malfunction
P0483 Cooling Fan Rationality Check Malfunction
P0484 Cooling Fan Circuit Over Current
P0485 Cooling Fan Power/Ground Circuit Malfunction
P0486 Exhaust Gas Recirculation Sensor "B" Circuit
P0487 Exhaust Gas Recirculation Throttle Position Control Circuit
P0488 Exhaust Gas Recirculation Throttle Position Control Range/Performance
P0491 Secondary Air Injection System (Bank 1)
P0492 Secondary Air Injection System (Bank 2)

P0500 Vehicle Speed Sensor Malfunction
P0501 Vehicle Speed Sensor Range/Performance
P0502 Vehicle Speed Sensor Circuit Low Input
P0503 Vehicle Speed Sensor Intermittent/Erratic/High
P0505 Idle Control System Malfunction
P0506 Idle Control System RPM Lower Than Expected
P0507 Idle Control System RPM Higher Than Expected
P0508 Idle Control System Circuit Low
P0509 Idle Control System Circuit High
P0510 Closed Throttle Position Switch Malfunction
P0512 Starter Request Circuit
P0513 Incorrect Immobilizer Key ("Immobilizer" pending SAE J1930 approval)
P0515 Battery Temperature Sensor Circuit
P0516 Battery Temperature Sensor Circuit Low
P0517 Battery Temperature Sensor Circuit High
P0520 Engine Oil Pressure/Switch Circuit Malfunction
P0521 Engine Oil Pressure/Switch Range/Performance
P0522 Engine Oil Pressure/Switch Low Voltage
P0523 Engine Oil Pressure/Switch High Voltage
P0524 Engine Oil Pressure Too Low
P0530 A/C Refrigerant Pressure Sensor Circuit Malfunction
P0531 A/C Refrigerant Pressure Sensor Circuit Range/Performance
P0532 A/C Refrigerant Pressure Sensor Circuit Low Input
P0533 A/C Refrigerant Pressure Sensor Circuit High Input
P0534 Air Conditioner Refrigerant Charge Loss
P0540 Intake Air Heater Circuit
P0541 Intake Air Heater Circuit Low
P0542 Intake Air Heater Circuit High
P0544 Exhaust Gas Temperature Sensor Circuit (Bank 1)
P0545 Exhaust Gas Temperature Sensor Circuit Low (Bank 1)
P0546 Exhaust Gas Temperature Sensor Circuit High (Bank 1)
P0547 Exhaust Gas Temperature Sensor Circuit (Bank 2)
P0548 Exhaust Gas Temperature Sensor Circuit Low (Bank 2)
P0549 Exhaust Gas Temperature Sensor Circuit High (Bank 2)
P0550 Power Steering Pressure Sensor Circuit Malfunction
P0551 Power Steering Pressure Sensor Circuit Range/Performance
P0552 Power Steering Pressure Sensor Circuit Low Input
P0553 Power Steering Pressure Sensor Circuit High Input
P0554 Power Steering Pressure Sensor Circuit Intermittent
P0560 System Voltage Malfunction
P0561 System Voltage Unstable
P0562 System Voltage Low
P0563 System Voltage High
P0564 Cruise Control Multi-Function Input Signal
P0565 Cruise Control On Signal Malfunction
P0566 Cruise Control Off Signal Malfunction
P0567 Cruise Control Resume Signal Malfunction
P0568 Cruise Control Set Signal Malfunction
P0569 Cruise Control Coast Signal Malfunction
P0570 Cruise Control Accel Signal Malfunction
P0571 Cruise Control/Brake Switch A Circuit Malfunction
P0572 Cruise Control/Brake Switch A Circuit Low
P0573 Cruise Control/Brake Switch A Circuit High
P0574 Cruise Control System - Vehicle Speed Too High
P0575 Cruise Control Input Circuit
P0576 Cruise Control Input Circuit Low
P0577 Cruise Control Input Circuit High
P0578-P0580 Reserved for Cruise Control Codes

P0600 Serial Communication Link Malfunction
P0601 Internal Control Module Memory Check Sum Error
P0602 Control Module Programming Error
P0603 Internal Control Module Keep Alive Memory (KAM) Error
P0604 Internal Control Module Random Access Memory (RAM) Error
P0605 Internal Control Module Read Only Memory (ROM) Error
P0606 PCM Processor Fault
P0607 Control Module Performance
P0608 Control Module VSS Output "A" Malfunction
P0609 Control Module VSS Output "B" Malfunction
P0610 Control Module Vehicle Options Error
P0615 Starter Relay Circuit
P0616 Starter Relay Circuit Low
P0617 Starter Relay Circuit High
P0618 Alternative Fuel Control Module KAM Error
P0619 Alternative Fuel Control Module RAM/ROM Error
P0620 Generator Control Circuit Malfunction
P0621 Generator Lamp "L" Control Circuit Malfunction
P0622 Generator Field "F" Control Circuit Malfunction
P0623 Generator Lamp Control Circuit
P0624 Fuel Cap Lamp Control Circuit
P0630 VIN Not Programmed or Mismatch - ECM/PCM
P0631 VIN Not Programmed or Mismatch - TCM
P0635 Power Steering Control Circuit
P0636 Power Steering Control Circuit Low
P0637 Power Steering Control Circuit High
P0638 Throttle Actuator Control Range/Performance (Bank 1)
P0639 Throttle Actuator Control Range/Performance (Bank 2)
P0640 Intake Air Heater Control Circuit
P0645 A/C Clutch Relay Control Circuit
P0646 A/C Clutch Relay Control Circuit Low
P0647 A/C Clutch Relay Control Circuit High
P0648 Immobilizer Lamp Control Circuit ("Immobilizer" pending SAE J1930 approval)
P0649 Speed Control Lamp Control Circuit
P0650 Malfunction Indicator Lamp (MIL) Control Circuit Malfunction
P0654 Engine RPM Output Circuit Malfunction
P0655 Engine Hot Lamp Output Control Circuit Malfunction
P0656 Fuel Level Output Circuit Malfunction
P0660 Intake Manifold Tuning Valve Control Circuit (Bank 1)
P0661 Intake Manifold Tuning Valve Control Circuit Low (Bank 1)
P0662 Intake Manifold Tuning Valve Control Circuit High (Bank 1)
P0663 Intake Manifold Tuning Valve Control Circuit (Bank 2)
P0664 Intake Manifold Tuning Valve Control Circuit Low (Bank 2)
P0665 Intake Manifold Tuning Valve Control Circuit High (Bank 2)

P0700 Transmission Control System Malfunction
P0701 Transmission Control System Range/Performance
P0702 Transmission Control System Electrical
P0703 Torque Converter/Brake Switch B Circuit Malfunction
P0704 Clutch Switch Input Circuit Malfunction
P0705 Transmission Range Sensor Circuit Malfunction (PRNDL Input)
P0706 Transmission Range Sensor Circuit Range/Performance
P0707 Transmission Range Sensor Circuit Low Input
P0708 Transmission Range Sensor Circuit High Input
P0709 Transmission Range Sensor Circuit Intermittent
P0710 Transmission Fluid Temperature Sensor Circuit Malfunction
P0711 Transmission Fluid Temperature Sensor Circuit Range/Performance
P0712 Transmission Fluid Temperature Sensor Circuit Low Input
P0713 Transmission Fluid Temperature Sensor Circuit High Input
P0714 Transmission Fluid Temperature Sensor Circuit Intermittent
P0715 Input/Turbine Speed Sensor Circuit Malfunction
P0716 Input/Turbine Speed Sensor Circuit Range/Performance
P0717 Input/Turbine Speed Sensor Circuit No Signal
P0718 Input/Turbine Speed Sensor Circuit Intermittent
P0719 Torque Converter/Brake Switch B Circuit Low
P0720 Output Speed Sensor Circuit Malfunction
P0721 Output Speed Sensor Circuit Range/Performance
P0722 Output Speed Sensor Circuit No Signal
P0723 Output Speed Sensor Circuit Intermittent
P0724 Torque Converter/Brake Switch B Circuit High
P0725 Engine Speed Input Circuit Malfunction
P0726 Engine Speed Input Circuit Range/Performance
P0727 Engine Speed Input Circuit No Signal
P0728 Engine Speed Input Circuit Intermittent
P0730 Incorrect Gear Ratio
P0731 Gear 1 Incorrect Ratio
P0732 Gear 2 Incorrect Ratio
P0733 Gear 3 Incorrect Ratio
P0734 Gear 4 Incorrect Ratio
P0735 Gear 5 Incorrect Ratio
P0736 Reverse Incorrect Ratio
P0737 TCM Engine Speed Output Circuit
P0738 TCM Engine Speed Output Circuit Low
P0739 TCM Engine Speed Output Circuit High
P0740 Torque Converter Clutch Circuit Malfunction
P0741 Torque Converter Clutch Circuit Performance or Stuck Off
P0742 Torque Converter Clutch Circuit Stuck On
P0743 Torque Converter Clutch Circuit Electrical
P0744 Torque Converter Clutch Circuit Intermittent
P0745 Pressure Control Solenoid Malfunction
P0746 Pressure Control Solenoid Performance or Stuck Off
P0747 Pressure Control Solenoid Stuck On
P0748 Pressure Control Solenoid Electrical
P0749 Pressure Control Solenoid Intermittent
P0750 Shift Solenoid A Malfunction
P0751 Shift Solenoid A Performance or Stuck Off
P0752 Shift Solenoid A Stuck On
P0753 Shift Solenoid A Electrical
P0754 Shift Solenoid A Intermittent
P0755 Shift Solenoid B Malfunction
P0756 Shift Solenoid B Performance or Stuck Off
P0757 Shift Solenoid B Stuck On
P0758 Shift Solenoid B Electrical
P0759 Shift Solenoid B Intermittent
P0760 Shift Solenoid C Malfunction
P0761 Shift Solenoid C Performance or Stuck Off
P0762 Shift Solenoid C Stuck On
P0763 Shift Solenoid C Electrical
P0764 Shift Solenoid C Intermittent
P0765 Shift Solenoid D Malfunction
P0766 Shift Solenoid D Performance or Stuck Off
P0767 Shift Solenoid D Stuck On
P0768 Shift Solenoid D Electrical
P0769 Shift Solenoid D Intermittent
P0770 Shift Solenoid E Malfunction
P0771 Shift Solenoid E Performance or Stuck Off
P0772 Shift Solenoid E Stuck On
P0773 Shift Solenoid E Electrical
P0774 Shift Solenoid E Intermittent
P0775 Pressure Control Solenoid "B"
P0776 Pressure Control Solenoid "B" Performance or Stuck Off
P0777 Pressure Control Solenoid "B" Stuck On
P0778 Pressure Control Solenoid "B" Electrical
P0779 Pressure Control Solenoid "B" Intermittent
P0780 Shift Malfunction
P0781 1-2 Shift Malfunction
P0782 2-3 Shift Malfunction
P0783 3-4 Shift Malfunction
P0784 4-5 Shift Malfunction
P0785 Shift/Timing Solenoid Malfunction
P0786 Shift/Timing Solenoid Range/Performance
P0787 Shift/Timing Solenoid Low
P0788 Shift/Timing Solenoid High
P0789 Shift/Timing Solenoid Intermittent
P0790 Normal/Performance Switch Circuit Malfunction
P0791 Intermediate Shaft Speed Sensor Circuit
P0792 Intermediate Shaft Speed Sensor Circuit Range/Performance
P0793 Intermediate Shaft Speed Sensor Circuit No Signal
P0794 Intermediate Shaft Speed Sensor Circuit Intermittent
P0795 Pressure Control Solenoid "C"
P0796 Pressure Control Solenoid "C" Performance or Stuck Off
P0797 Pressure Control Solenoid "C" Stuck On
P0798 Pressure Control Solenoid "C" Electrical
P0799 Pressure Control Solenoid "C" Intermittent

P0801 Reverse Inhibit Control Circuit Malfunction
P0803 1-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction
P0804 1-4 Upshift (Skip Shift) Lamp Control Circuit Malfunction
P0805 Clutch Position Sensor Circuit
P0806 Clutch Position Sensor Circuit Range/Performance
P0807 Clutch Position Sensor Circuit Low
P0808 Clutch Position Sensor Circuit High
P0809 Clutch Position Sensor Circuit Intermittent
P0810 Clutch Position Control Error
P0811 Excessive Clutch Slippage
P0812 Reverse Input Circuit
P0813 Reverse Output Circuit
P0814 Transmission Range Display Circuit
P0815 Upshift Switch Circuit
P0816 Downshift Switch Circuit
P0817 Starter Disable Circuit
P0818 Driveline Disconnect Switch Input Circuit
P0820 Gear Lever X-Y Position Sensor Circuit
P0821 Gear Lever X Position Circuit
P0822 Gear Lever Y Position Circuit
P0823 Gear Lever X Position Circuit Intermittent
P0824 Gear Lever Y Position Circuit Intermittent
P0825 Gear Lever Push-Pull Switch (Shift Anticipate)
P0830 Clutch Pedal Switch "A" Circuit
P0831 Clutch Pedal Switch "A" Circuit Low
P0832 Clutch Pedal Switch "A" Circuit High
P0833 Clutch Pedal Switch "B" Circuit
P0834 Clutch Pedal Switch "B" Circuit Low
P0835 Clutch Pedal Switch "B" Circuit High
P0836 Four Wheel Drive (4WD) Switch Circuit
P0837 Four Wheel Drive (4WD) Switch Circuit Range/Performance
P0838 Four Wheel Drive (4WD) Switch Circuit Low
P0839 Four Wheel Drive (4WD) Switch Circuit High
P0840 Transmission Fluid Pressure Sensor/Switch "A" Circuit
P0841 Transmission Fluid Pressure Sensor/Switch "A" Circuit Range/Performance
P0842 Transmission Fluid Pressure Sensor/Switch "A" Circuit Low
P0843 Transmission Fluid Pressure Sensor/Switch "A" Circuit High
P0844 Transmission Fluid Pressure Sensor/Switch "A" Circuit Intermittent
P0845 Transmission Fluid Pressure Sensor/Switch "B" Circuit
P0846 Transmission Fluid Pressure Sensor/Switch "B" Circuit Range/Performance
P0847 Transmission Fluid Pressure Sensor/Switch "B" Circuit Low
P0848 Transmission Fluid Pressure Sensor/Switch "B" Circuit High
P0849 Transmission Fluid Pressure Sensor/Switch "B" Circuit Intermittent

TOYOTA-SPECIFIC OBD II CODE DEFINITIONS
P1100 BARO Sensor Circuit malfunction
P1120 Accelerator Pedal Position Sensor Circuit Malfunction
P1121 Accelerator Pedal Position Sensor Range/Performance Problem
P1125 Throttle Control Motor Circuit Malfunction
P1126 Magnetic Clutch Circuit Malfunction
P1127 ETCS Actuator Power Source Circuit Malfunction
P1128 Throttle Control Motor Lock Malfunction
P1129 Electric Throttle Control System Malfunction
P1130 Air-Fuel Sensor Circuit Range/Performance
P1133 Air-Fuel Sensor Circuit Response Malfunction
P1135 Air-Fuel Sensor Heater Circuit Response Malfunction
P1150 A/F Sensor Circuit Range/Performance Malfunction
P1153 A./F Sensor Circuit Response Malfunction
P1155 A/F Sensor Heater Circuit Malfunction

P1200 Fuel Pump Relay Circuit Malfunction

P1300 Igniter Circuit Malfunction No. 1
P1305 Igniter Circuit Malfunction No. 2 (1998-2000 Land Cruiser, 2000 Celica & Tundra)
P1310 Igniter Circuit Malfunction No. 2 (Except 1998-2000 Land Cruiser, 2000 Celica & Tundra)
P1310 Igniter Circuit Malfunction No. 3 (1998-2000 Land Cruiser, 2000 Celica & Tundra)
P1315 Igniter Circuit Malfunction No. 4 (1998-2000 Land Cruiser, 2000 Celica & Tundra)
P1320 Igniter Circuit Malfunction No. 5 (1998-2000 Land Cruiser & 2000 Tundra)
P1325 Igniter Circuit Malfunction No. 6 (1998-2000 Land Cruiser & 2000 Tundra)
P1330 Igniter Circuit Malfunction No. 7 (1998-2000 Land Cruiser & 2000 Tundra)
P1335 No CKP Sensor Signal Engine Running
P1340 Igniter Circuit Malfunction No. 8 (1998-2000 Land Cruiser & 2000 Tundra)
P1346 VVT Sensor /Camshaft Position Sensor Circuit Range/Performance Problem (Bank 1)
P1349 VVT System Malfunction

P1400 Sub-Throttle Position Sensor Malfunction
P1401 Sub-Throttle Position Sensor Range/Performance Problem
P1405 Turbo Pressure Sensor Circuit Malfunction
P1406 Turbo Pressure Sensor Range/Performance Problem
P1410 EGR Valve Position Sensor Circuit Malfunction
P1411 EGR Valve Position Sensor Circuit Ranger/Performance

P1500 Starter Signal Circuit Malfunction
P1510 Boost Pressure Control Circuit Malfunction
P1511 Boost Pressure Low Malfunction
P1512 Boost Pressure High Malfunction
P1520 Stop Lamp Switch Signal Malfunction
P1565 Cruise Control Main Switch Circuit Malfunction

P1600 ECM BATT Malfunction
P1605 Knock Control CPU Malfunction
P1630 Traction Control System Malfunction
P1633 ECM Malfunction ECTS Circuit
P1645 Body ECU Malfunction
P1652 IACV Control Circuit Malfunction
P1656 OCV Circuit Malfunction
P1658 Waste Gate Valve Control Circuit Malfunction
P1661 EGR Circuit Malfunction
P1662 EGR By-Pass Valve Control Circuit Malfunction
P1690 OCV Circuit Malfunction
P1692 OCV Open Malfunction
P1693 OCV Closed Malfunction

P1780 PNP Switch Malfunction

****************************

TROUBLESHOOTING SOME COMMON CODES

P0325
No knock sensor 1 signal to ECM with engine speed 2,000 rpm or more.

Possible Problems
Open or short in knock sensor 1 circuit <= Most likely problem. Check sensor connector for good connection and check wire for damage. Wire is easily damaged when head is removed or similar repair work has been accomplished. Sensor can be tested with ohmmeter. There should be no continuity between the sensor terminal and the sensor body. Replace if there is continuity.
Knock sensor 1 loosness - tighten sensor
ECM

P0330
No knock sensor 2 signal to ECM with engine speed 2,000 rpm or more.

Possible Problems
Open or short in knock sensor 2 circuit <= Most likely problem.Check sensor connector for good connection and check wire for damage. Wire is easily damaged when head is removed or similar repair work has been accomplished. Sensor can be tested with ohmmeter. There should be no continuity between the sensor terminal and the sensor body. Replace if there is continuity.
Knock sensor 2 loosness - tighten sensor
ECM

P0401
After the engine is warmed up, the intake manifold absolute pressure is larger than the value calculated by the ECM while the EGR system is ON (2 trip detection logic).

Possible Problems
EGR valve stuck closed <= Most common Clean EGR valve
EGR Vacuum Switching Valve (VSV)
Open or short in VSV circuit for EGR
EGR valve position sensor open or short circuit
Vacuum or EGR hose disconnected
EGR valve position sensor
Manifold absolute pressure sensor malfunction
ECM

P0402
After the engine is warmed up, conditions (a) and (b) continue.

(a) The intake manifold absolute pressure is larger than the value calculated by the ECM while the EGR system is ON.

(b) Misfiring is detected during idling (2 trip detection logic).

Possible Problems
EGR valve stuck open <= Most common Clean EGR valve
Vacuum or EGR hose is connected to wrong post
Manifold absolute pressure sensor malfunction
ECM

P0440
The fuel tank pressure is atmospheric pressure after the vehicle is driven for 20 min (2 trip detection logic).

Possible Problems
Fuel tank cap incorrectly installed <= Most common
Fuel tank cap cracked or damaged (Toyota part only)
Bad vapor pressure sensor/circuit
Vacuum hose cracked, holed, blocked, damaged or disconnected
Hose or tube cracked, holed, damaged, or loose
Fuel tank/filler neck cracked, holed, or damaged
Charcoal canister cracked, holed, or damaged (collision)

In above description, check hoses between vapor pressur sensor and VSV for vapor pressure sensor and charcoal canister. Also, hose between charcoal canister and fuel tank.


P0441 and/or P0446

Possible Problems
Open or short in VSV circuit for vapor pressure sensor
VSV for vapor pressure sensor
Open or short in vapor pressure sensor circuit
Vapor pressure sensor
Open or short in VSV circuit for EVAP
VSV for EVAP
Vacuum hose cracks, hole, blocked, damaged or disconnected
Charcoal canister cracks, hole, or damaged

(P0446 is not normally associated with a loose or non-sealing gas cap. A loose or non-sealing gas cap triggers P0440)

1. Check the VSV connector for EVAP, VSV connector for vapor pressure sensor and vapor pressure sensor connector for looseness and disconnection

2. Check the vacuum hose between intake manifold and VSV for EVAP, VSV for EVAP and charcoal canister, charcoal canister and VSV for vapor pressure sensor, and VSV for vapor pressure sensor and vapor pressure sensor. Check these hoses for correct connection, looseness, cracks, holes, damage, and blockage.

3. Check voltage between terminals VC and E2 of ECM connector (4.5-5.5 V). (replace ECM if faulty)

4. Check voltages between terminals PTNK and E2 of ECM connector while applying vacuum to vapor pressure sensor (2.9-3.7 V).

If faulty, check for open and short in harness and connector between vapor pressure sensor and ECM. If ok at this point, replace vapor pressure sensor.

If voltage above is ok, Check VSV for EVAP. When ECM terminal EVP is grounded (ignition "ON"), Air should flow in pipe E (inboard on tube) on VSV and out F (outboard on tube) on VSV (Don't use high pressure air for this test). When EVP is not grounded, air does not flow in E and out F.

5. Check operation of VSV for EVAP. Remove VSV from engine. Check that there is continuity between the two terminals (30-34 ohms). If there is no continuity, replace VSV for EVAP.

Check that there is no continuity between either terminal and body. If there is continuity, replace VSV for EVAP.

Check that air does not flow from inner port (E) to outboard port (F).

Check that air flows from port E to F when you apply battery voltage across terminals. If no air flows, replace VSV for EVAP.

6. Check the vacuum hose between intake manifold and VSV for EVAP, and VSV for EVAP and charcoal canister. Check as above.

7. Check for open or short in harness and connector between EFI main-relay and VSV for EVAP and ECM. If faulty, repair or replace harness or connector. If ok, check and replace ECM.

8. Check VSV for vapor pressure sensor. When ECM terminal TPC is grounded (ignition "ON"), Air should flow in pipe E (inboard on tube) on VSV and out F (outboard on tube) on VSV. When TPC is not grounded, air flows out G (outside of connector).

If ok, check and replace charcoal canister.

If not functioning correctly, check function of VSV for vapor pressure sensor. Remove from engine.
Check that there is continuity between the terminals (33-39 ohms). Replace the VSV if there is no continuity.

Check that air flows from port E (inboard in tube) to port G (side of connector).

Check that air flows from port E to port F (outboard in tube) when battery voltage is applied across terminals. Replace VSV if function is incorrect.

9. If good, Check the vacuum hose between charcoal canister and VSV for vapor pressure sensor, and vapor pressure sensor and VSV for vapor pressure sensor - check as above.

11. Check for open and short in harness and connector between EFI main replay and VSV for vapor pressure sensor and ECM.

ENGINE PARTS LOCATION

Q: Where is my PCV valve? I have a 1999 V6 Tacoma and I have no clue.

A: Try Autozone Repair Information - click on "Component Location":

http://www1.autozone.com/servlet/UiBroker?ForwardPage=/az/repair_info/repair_info.jsp

What Brand of Air Filter Performs Best?
Here is a study of a number of brands of air filters using ISO 5011:
http://home.usadatanet.net/~jbplock/ISO5011/SPICER.htm

Power Steering Fluid Change
Here is a procedure from toyotanation with pics:
http://www.toyotanation.com/forum/t19334.html

Oil Weight Recommendation
Use 5W-30 oil under all conditions unless you live in Arizona, Southern Texas, Fargo, etc. There is a significant benefit to getting the oil flowing immediately after start-up.

Replacing Engine Coolant.
Make sure you get all the air out of the system before you cap the radiator. Run the engine at idle with the radiator cap off and add coolant as necessary to keep the radiator full of coolant. Once the engine reaches operating temperature and the coolant begins to overflow, replace the radiator cap and fill the coolant reservoir to the hot line. Check the coolant level in the reservoir after the next time you drive it and it has had a chance to cool down.

Valve Clearance Adjustment
In general, you don't have to adjust the valve clearances in these engines unless you have modified the valve train in some way. Leave well-enough alone unless you have a specific need.

Drive Shaft Boots Preventive Maintenance
Spray them with silicone lubricant (WD-40 has also been recommended to me) every time you are under the car for an oil change. This will prevent them from drying out and they will last forever. Cracked and leaking boots are common after 6-8 years without some treatment and replacing the half-shafts because of this is expensive.

Replacing Transmission Fluid
It is preferable to flush the transmission and replace all the fluid this way, rather than just draining the small amount of fluid in the pan. The vast majority of the transmission fluid is trapped in the torque converter and the valve body and is not changed by draining the pan only. I have been told that it is unnecessary to change the filter in the transmission. It is wire mesh and only meant to keep chunks of stuff out of the valve body.

If your serious about transmission maintenance, try this link for parts and transmission repair manuals:

http://www.drivetrain.com/autotransoverhaulkits.html

General Maintenance
Always use a torque wrench to tighten fasteners to the recommended torque value. A pair of torque wrenches (one large and one small) are indespensible for auto maintenance, particularly when you have an aluminum engine/head. Two torque wrenches I recommend (or their equivalent) are:

http://www.sears.com/sr/javasr/product.do?BV_SessionID=@@@@1796327765.1120232008@ @@@&BV_EngineID=ccciaddfdegmkefcegecegjdghldghg.0&pid=00944595000&vertical=TOOL
http://www.sears.com/sr/javasr/product.do?BV_UseBVCookie=Yes&vertical=TOOL&pid=00944593000

These are micrometer-style torque wrenches. You dial in the required torque and then the wrench clicks strongly when you exert the force necessary to tighten the bolt. To keep their accuracy, store them with the torque setting on a very low value. You can pay alot more for better wrenches, but these are more than adequate. Evenness of torque around a bolt pattern is more important that the actual torque value of the pattern.

Don't extend the lever arm of a torque wrench with a crow's foot or other device. If you make the socket end of the torque wrench longer, you increase the torque applied to the bolt. If you have to use a lengthening adapter, use it at a 90 degree angle to the torque wrench shaft.

Also, always make sure you are tightening a bolt or nut with lubricated threads (oil for steel hole, antiseize compound for aluminum hole). Bolts always have to go into clean holes. Run a flat-bottom tap into all holes that won't accept a bolt hand-tight to the bottom. Follow tightening sequences when provided - tighten gradually in three steps 1/3, 2/3, then recommended torque over entire bolt pattern.

Tighten bolts in a bolt pattern only loosely until all the bolts have been inserted and are threaded into the holes. If you tighten some down prematurely, it will be very difficult or impossible to insert all the bolts and you will have to loosen the tight bolts anyway.

GETTING RID OF BINDING STOCK ANTENNA

Q: My antenna won't go down the way it should. Is there a cheap fix for this?

A: Some guys install a Honda S2000 antenna in place of the stock one.

See this article:
http://www.toyotanation.com/forum/t65507.html


HAZY HEADLIGHT COVERS

Q: My headlight covers are so hazy, I had to buy HID lights just so I would have enough light to drive buy. What can I do to polish them?

A: See the solutions posted in this thread:

http://www.automotiveforums.com/vbulletin/showthread.php?t=230436

KNOCKING, THUMPING, OR CREAKING SOUND IN REAR/FRONT WHEN GOING OVER BUMPS

Q: I have been dealing with this weird noise for some time. I can hear the noise sounds like two pieces of heavy metal hitting each other. It sounds from the right rear area. It happens more often when speed is low say 30 mph on rough road. On highway, it does not happen as often. Anyone know what it can be?

A: First thing to check is your sway bar (stabilizer bar) bushings. What causes the bushings to wear is when water and salt (or just water) gets into the bushing, it corrodes the surface of the sway bar and the surface becomes rough. This wears away the bushing. To get a long-term fix, you should polish the sway bar with a strip of emory cloth where the bushing rubs and then replace the bushing with a new one. Then the sway bar is smooth and the fix will last longer.

The sway bar bushings are cheap to buy from Toyota ($10/pair) and easy to replace - 30 min at most. When I have bought bushings from Toyota, they even gave me a strip of emory cloth to polish the bar with.

Here's a thread on the subject:
http://www.automotiveforums.com/vbulletin/showthread.php?t=291603&page=1&pp=15

REBUILDING YOUR OWN ALTERNATOR

If the brake and charge lights come on during revving of the engine then it's a sign that the carbon alternator brushes require replacing as this is the mileage for them to wear out. In alternators the brushes wear out on average every 140-170 000 miles where on the dashboard the brake & charge light both come on at the same time. About half of the auto electric shops in your local yellow pages sell carbon alternator brushes and copper solenoid starter contacts for about $5/pair.Another way to verify that the alternator is not charging is while the engine is running bring a metal screwdriver or any metal object near the alternator and if the alternator is working properly then it should act like a magnet and grab the screwdriver.

For carbon brushes R&R:

http://www.4x4wire.com/toyota/maintenance/alternator_brushes/ http://www.toyotaoffroad.net/afertig/88/alternatorbrushes.htm
http://perso.wanadoo.fr/adherence.4x4/alternateur_kzj.htm
http://www.automotiveforums.com/vbulletin/showthread.php?t=166525
http://www.toyotanation.com/forum/showthread.php?threadid=27270&forumid=10
http://www.pirate4x4.com/forum/showthread.php?s=&threadid=26734&highlight=alternator+brush+holder
http://www.bitwalla.com/cruisers/articles/alternator.html
http://www.barneymc.com/toy_root/techtalk/electric/altrnatr.htm

For decoding the dashboard lights:

http://www.powerbase-auto.co.uk/alternator_faults.htm
http://members.1stconnect.com/anozira/SiteTops/energy/Alternator/alternator.htm

Here are part #'s for Toyota alternator carbon brushes and copper solenoid starter contacts which are used in about 95% of all Toyota vehicles.

Toyota alternator Brushes with holder:

Toyota # 27370-35060=$29 CDN
Honda # 31105-PZ1-003
Metro # 39-82003 (www.metroautoinc.com ,Pomona,California)
Unknown brand name # F4019-53035

Alternator brush only (qty:1 brush unless otherwise stated):

AC Delco # E724
AC Delco # E731 (side wire and concave tip)
Ace Electric # DA-61 (brush only),S-5367 (brush holder)
Beck Arnley # 178-1669 (side wire and concave tip)
Beck Arnley # 178-1376
Borg Warner # X580 (side wire and concave tip)
Canadian Tire # 19-2050-6=$4.49/pair
Daihatsu # 27370-87302-000
Daihatsu # 27371-63020-000
Daihatsu # 27371-87501-000
Daihatsu # 27371-70300-000
Echlin # E601=$8.16 CDN/pair (UAP/NAPA)
Echlin # ECHE601
Echlin # EC480
Echlin # ECHE480
GP Sorensen # 255047 (side wire and concave tip)
GM # 94123056
GM # 96054118
Honda # 31144-PD1-004=$9.72
Honda # 31144-PD1-0040
Honda # 31144-PD1-0030
Honda # 31150-PR7-A01
Honda # 31150-PTO-003
Hino Industries # 021660-0390
Hino Industries # 021660-0510
Isuzu # 8-94123-056-0
Isuzu # 8-97032-308-0
Isuzu # 8-97032-310-0
Mazda # 021660-0390
Mazda # 021660-0510
Mazda # KL47-18-W75
Metro # 38-82001(side wire concave tip) (www.metroautoinc.com ,Pomona,California)
Mileage Plus # E601SB
Mitsubishi # MD604474
Mitsubishi # 21660-0510
Niehoff # WA571 (side wire and concave tip)
NipponDenso # 021660-0390
NipponDenso # 021660-0510
Standard # JX-116 (side wire and concave tip)
Subaru # 021660-0390
Subaru # 021660-0510
Suzuki # 31631-82610
Suzuki # 31656-82611
Suzuki # 021660-0510
Toyota # 27370-42010
Toyota # 27370-75060
Toyota # 27371-63020=$5.80 (up to 9105) (side wire and concave tip)
Toyota # 27371-70300=$5.20 (9105-9511)
Toyota # 27371-76004-71
UAP/NAPA # MPEE601SB
Victory Lap # FAX57=$4.49 CDN/pair (Canadian Tire)
Wilson's Electric # 26-29-7534 (side wire and concave tip)=$2.20 each CDN (Diesel Auto Electric)(Parts for Trucks,box of 10 for $3.40 CDN)

Specifications:
Length=15 mm
Width=7 mm
Thickness=5 mm
Lead length=49 mm

These Honda alternators are the same except the pulley must be swapped:

1986-89 Honda Accord (Carb),the EFI can be used but the voltage reg must be swapped
1990-93 Acura Integra

Thanks to SydneyCanada for the above information

MOBILE ELECTRONICS/STEREO INSTALLATION

Q: Where can I find information on how to install a new stereo in my Tacoma?

A: The Install Doctor is a good source:
http://www.installdr.com/

TECHNICAL ARTICLES ON TOYOTA ENGINE SYSTEMS
EXTENSIVE AUTOMOTIVE INFORMATION LINKS

Q: Where can I find technical information on my EGR system? I want to modify it and I'd better understand what's going on there first. :)

A: A good source of technical articles and automotive information links is Kevin Sullivan's Autoshop 101 site:

http://www.autoshop101.com/

Here are the titles of his technical articles followed by direct links to the articles:

Technical Articles
Toyota Series - Electrical
Electrical Fundamentals with questions.pdf
http://www.autoshop101.com/forms/h1.pdf

Electrical Circuits with questions.pdf
http://www.autoshop101.com/forms/h2.pdf

Electrical Components with questions.pdf
http://www.autoshop101.com/forms/h3.pdf

Analog vs Digital Meters with questions.pdf
http://www.autoshop101.com/forms/h4.pdf

Wire, Terminal and Connector Repair w/qu.pdf
http://www.autoshop101.com/forms/h5.pdf

Automotive Batteries with questions.pdf
http://www.autoshop101.com/forms/h6.pdf

Toyota Starting Systems with questions.pdf
http://www.autoshop101.com/forms/h7.pdf

Toyota Charging Systems with questions.pdf
http://www.autoshop101.com/forms/h8.pdf

Understanding Toyota Wiring Diagram.pdf
http://www.autoshop101.com/forms/h09e.pdf

Electrical Diagnostic Tools.pdf
http://www.autoshop101.com/forms/h10e.pdf

Diagnosing Body Electrical Problems.pdf
http://www.autoshop101.com/forms/h11e.pdf

Semiconductors with questions.pdf
http://www.autoshop101.com/forms/h12.pdf

Transistors with questions.pdf
http://www.autoshop101.com/forms/h13.pdf

Computers / Logic Gates with questions.pdf
http://www.autoshop101.com/forms/h14.pdf

Overview of Sensors & Actuators w/quest.pdf
http://www.autoshop101.com/forms/h15.pdf

Electronic Transmission #1 - Operation.pdf
http://www.autoshop101.com/forms/h16.pdf

Electronic Transmission #2 - Diagnosis w/quest.pdf
http://www.autoshop101.com/forms/h17.pdf

Shift Interlock System.pdf
http://www.autoshop101.com/forms/h18.pdf


Technical Articles
Toyota Series - Engine Performance OBDI (pre-1996)
EFI#1 EFI System Overview.pdf
http://www.autoshop101.com/forms/h20.pdf

EFI#2 Air Induction System.pdf
http://www.autoshop101.com/forms/h21.pdf

EFI#3 Fuel Delivery & Injection Controls.pdf
http://www.autoshop101.com/forms/h22.pdf

EFI#4 Ignition System.pdf
http://www.autoshop101.com/forms/h23.pdf

Engine Controls #1 - Input Sensors.pdf
http://www.autoshop101.com/forms/h24.pdf

Engine Controls #2 - ECU/Outputs.pdf
http://www.autoshop101.com/forms/h25.pdf

Engine Controls #3 - Idle Speed Control.pdf
http://www.autoshop101.com/forms/h26.pdf

Engine Controls #4 - Diagnosis.pdf
http://www.autoshop101.com/forms/h27.pdf


Technical Articles
Toyota Series - Engine Performance OBD-II (1996 and newer - some '94 and '95)

Sensors#1 - Mode Sensors and Switches.pdf
http://www.autoshop101.com/forms/h31.pdf

Sensors#2 - Thermistors with questions.pdf
http://www.autoshop101.com/forms/h32.pdf

Sensors#3 - Position Sensors with questions.pdf
http://www.autoshop101.com/forms/h33.pdf

Sensors#4 - Air Flow Sensors with questions.pdf
http://www.autoshop101.com/forms/h34.pdf

Sensors#5 - Pressure Sensors with questions.pdf
http://www.autoshop101.com/forms/h35.pdf

Sensors#6 - Speed Sensors with questions.pdf
http://www.autoshop101.com/forms/h36.pdf

Sensors#6 - Oxygen / Air Fuel Sensors w/ques.pdf
http://www.autoshop101.com/forms/h37.pdf

Sensors#8 - Knock Sensors with questions.pdf
http://www.autoshop101.com/forms/h38.pdf

Ignition#1 - Ignition Overview w/questions.pdf
http://www.autoshop101.com/forms/h39.pdf

Ignition#2 - Electronic Spark Advance w/quest.pdf
http://www.autoshop101.com/forms/h40.pdf

Ignition#3 - Distributor / Distributorless w/qu.pdf
http://www.autoshop101.com/forms/h41.pdf

Fuel System#1 - Overview with questions.pdf
http://www.autoshop101.com/forms/h42.pdf

Fuel System#2 - Injection Duration w/ques.pdf
http://www.autoshop101.com/forms/h43.pdf

Fuel System#3 - Closed Loop /Fuel Trim w/qu.pdf
http://www.autoshop101.com/forms/h44.pdf

OBDII#1 - Overview of On-Board Diagnostics.pdf
http://www.autoshop101.com/forms/h46.pdf

OBDII#2 - Serial Data.pdf
http://www.autoshop101.com/forms/h47.pdf

OBDII#3 - Data Interpretation.pdf
http://www.autoshop101.com/forms/h48.pdf

Emission#1 - Chemistry of Combustion.pdf
http://www.autoshop101.com/forms/h55.pdf

Emission#2 - Emission Analysis.pdf
http://www.autoshop101.com/forms/h56.pdf

Emission#3 - Engine Sub Systems.pdf
http://www.autoshop101.com/forms/h57.pdf

Emission#4 - Closed Loop Feedback Systems.pdf
http://www.autoshop101.com/forms/h58.pdf

Emission#5 - Electronic Spark Advance.pdf
http://www.autoshop101.com/forms/h59.pdf

Emission#6 - Idle Speed Control Systems.pdf
http://www.autoshop101.com/forms/h60.pdf

Emission#7 - Exhause Gas Recirculation.pdf
http://www.autoshop101.com/forms/h61.pdf

Emission#8 - Evaporative Emission Control.pdf
http://www.autoshop101.com/forms/h62.pdf

Emission#9 - Positive Crankcase Ventilation.pdf
http://www.autoshop101.com/forms/h63.pdf

Emission#10 - Catalytic Converter.pdf
http://www.autoshop101.com/forms/h64.pdf

Emission#11 - Secondary Air.pdf
http://www.autoshop101.com/forms/h65.pdf


Don't ignore the information and links in the "Automotive Links" section. Also, the "Online Bookstore" is useful if you want to get ASE certified.

PROPELLOR SHAFT GREASE FITTINGS

Q: How often should should I lubricate the driveshaft grease fittings on my Tacoma?

A: Driveshaft/propeller shaft lubrication interval is listed in the Toyota scheduled maintenance guide for your truck. 5,000 mi. or 6 months for 2004 models. Applies to Prerunner and all 4 X 4's.
For lubrication procedure and the type grease to use see;
http://www.4x4wire.com/toyota/maint...html#driveshaft

DECKPLATE MOD TO AIRBOX
How do I do the deck plate mod and what does it do?

The deck plate mod is done by installing a marine type deck plate in the the air cleaner box to allow more inlet air for higher rpms. It should be good for a little extra horsepower. References for installing a plate:
http://www.toyotaoffroad.net/jnburtman/deckplate.html
http://customtacos.com/tech/index.php?page=index_v2&id=85&c=5
http://www.wattora.com/mods/deckplate/

One source for deckplates:
http://tempress.com/hatches.cfm

INSTALLING A SUPERCHARGER FOR 5VZ-FE
http://www.automotiveforums.com/vbulletin/showthread.php?t=408217
http://www.toyotaworld.com/trdsupercharger.html
http://www.gadgetonline.com/4run.htm
http://www.trdusa.com/Default.asp

MODIFYING YOUR E-LOCKER SO THAT YOU CAN USE IT IN 2WD AND 4WDHIGH

http://www.4x4wire.com/toyota/minutemods/greywire_mod/

WINDSHIELD SCRATCHES

Q: My windshield has 2 wiper marks from crappy wiper blades. how can i get rid of them? Is there some kind of cleaner that wil bring them off?

A: If you can feel them with your finger nails they will not come out by cleaning, If not too deep you may be able to get the out with some very fine rubbing compound, some people use tooth paste. Do a Google search and see what come up. Be advised, it will require lots of time and effort and still may not work.

Q: Thanks for the reply. The marks are very light. I have some stuff called Plastix from Meguiers. It does an excellent job on plastic getting scratches and oxidation out. Do you think that will work?

A: It shouldn't hurt anything to try the Plastix. If that doesn't help here is an article that describes how to polish out scratches.

http://www.valvoline.com/carcare/articleviewer.asp?pg=ccr20030101wp&print=1

PROGRAMMING TRANSPONDER IGNITION KEYS

Thanks to Sparky at talkaboutautos.com

Q: How do I program a transponder ignition key for my Toyota/Lexus vehicle?

A: 98-01 Toyota/Lexus: The programming sequence for adding another key (Toyota key part number 89785-26020) to the Camry, according to the ILCO key company catalog, and a Toyota maintenance manual I have seen, is as follows: Simultaneously depress and release the brake and accelerator pedals 1 time (one instruction kind of hints that you should hold the pedals down while you insert the master key, the next step). Insert the master key in the ignition, but do not turn it. Within 15 seconds press & release the accelerator pedal 5 times. Then within 20 seconds press & release the brake pedal 6 times. Within 10 seconds remove the master key, and insert the new key. Within 10 seconds press & release the accelerator 1 time. The security light will stay off after 60 to 80 seconds indicating the re-programming was successful. Remove the new key, and depress & release the brake pedal 1 time.

02 TO EARLY-03 Toyota/Lexus: The programming sequence for adding another key (Toyota key part number 89785-26020) to the Camry, according to the key company catalog is as follows: Make sure all windows and doors are closed, and insert the master key in the ignition. Cycle the ignition key ON/OFF 5 times and leave the key in the lock. Open/Close the driver side door 6 times. Remove the original key and insert the new duplicate key, BUT DO NOT TURN THE KEY ON. The theft light will stay off after 60 to 80 seconds indicating the re-programming was successful. Do not laugh while executing this sequence.

MID-03 TO 2004 Toyota/Lexus: Currently there is no (easily available) programming sequence that the customer can use. A new key is used (Toyota key part number 89785-60160) that has a small letter "o" stamped on the brass part of the key up near the handle. Apparently, only the dealer can program in a new transponder code into the ECM via the OBD (On Board Diagnostic) computer.

ACE hardware and others, sell the non-"o" key for much less than $75, but you have to program the ECM in the car yourself. Camelback Toyota charges $150 to supply & program a key for a Mid-03 Toyota/Lexus. Larry Miller Toyota sells the key for $75 and programs it for free. Bell Road Toyota sells the key for $75, but it's not clear if they charge for programming. If the ECM is truly programmed through the OBD, then I think it is only a matter of time before somebody like Pep Boys or Autozone will do it too!

According to the ILCO catalog, all of the key numbers programmed into a 98 to Early-03 ECM (other than the number of the key you are using) can be deleted by using the following sequence: Simultaneously depress & release the brake and accelerator pedals 1 time. Insert a working key into the ignition but do not turn it. Within 15 seconds depress & release the accelerator pedal 6 times. Within 20 seconds depress & release the break pedal 7 times. The security light will flash indicating that all key numbers, other than the one being used, have been deleted from the ECM memory. Within 10 seconds remove the key from the ignition switch. This is now the only key that will work.

Brian Edit: Here's a link to the ILCO catalog:

http://www.kaba-ilco.com/key_systems/pdf/2005_Auto_Truck_Key_Blank_Reference_[2816-E-0205].pdf

An alternative to reprogramming the ECM when you have no programed master key:

Stefan: "I called the parts department at local dealership I usually get parts from (I own a custom body&paint/collision shop) and they told me, that there is a way to get TOYOTA CORP. to actually replace the ECM free of charge, all I have to pay for is two keys @ $41 list price and the labor to swap out the ECM.

The car has to have original ECM it came from the factory with, simple as that!

I called TOYOTA Corp, they asked a few questions and ran a VIN# in their sytem and said my car falls under that category for a FREE ECM!! WOOT!. They said it will take 3-5 business days to mail/ship the ECM to the dealership of my choice, once it gets there, dealership will call me to bring/tow the car in and all I have to pay is for the labor to swap out ECM AND the cost for 2 new keys!, I will update you on the outcome of this situation."

Stefan


INFORMATION ON TRA