When I open the drivers side door on my 2003 town and country the interior lights don't go on (passenger side door does). Also, the radio and lights don't go off when the drivers side door is opened (passenger side door does). I had the latch replaced but that did not fix the problem (I was told that the sensor is in the latch). Any other ideas? Could it be a fuse or relay?

Check the on/off switch located either fore or aft side of the interior front door frame, should be black plastic with foot that extends or retracts as the door is closed.

you need to check the wire loom that runs from the door to the a-pillar. possible wire is cut i have repaired several vehicles with this problem

Could you please give me some details on what wire to check and where it is located?

thanks

you need to check the wire loom that runs from the door to the a-pillar. possible wire is cut i have repaired several vehicles with this problem

Open the drivers door and just below where the door lock jaws grab the metal ring to lock the door you will see the black plastic light switch (has foot that extends when door is opened and seats when door is closed). Remove this switch and clean the contacts and silicone the shaft of the foot and reinstall and see what that does. I had this issue on my passenger door and the foot was not extending as the door was opened so I had no current flow. I removed the switch, cleaned the contacts and lubed the shaft and for the past two years all has been OK.

LEFT FRONT DOOR LOCK MOTOR/AJAR SWITCH (EXCEPT BASE) - BLACK 4 WAY CAV CIRCUIT FUNCTION
1 G75 20VT LEFT FRONT DOOR AJAR SWITCH SENSE
2 Z75 20BK/VT GROUND
3 P1 20TN/LG LEFT FRONT DOOR UNLOCK DRIVER
4 P3 20TN/WT LEFT FRONT DOOR LOCK DRIVER



BODY CONTROL MODULE C3 - BLACK/WHITE 34 WAY CAV CIRCUIT FUNCTION
1 G23 22VT/DB (POWER SLIDING DOOR) SLIDING DOORS OVERHEAD SWITCH MUX
2 D123 20WT/BR FLASH PROGRAM ENABLE
3 G152 22VT/GY (POWER SLIDING DOOR) RIGHT SLIDING DOOR WAKE UP SIGNAL
4 G151 22VT/BR (POWER SLIDING DOOR) LEFT SLIDING DOOR WAKE UP SIGNAL
5 G76 20VT/YL RIGHT SLIDING DOOR AJAR SWITCH SENSE
6 G75 22VT (LHD) LEFT FRONT DOOR AJAR SWITCH SENSE
6 G74 22VT/WT (RHD) RIGHT FRONT DOOR AJAR SWITCH SENSE
7 G75 22VT (RHD) LEFT FRONT DOOR AJAR SWITCH SENSE
7 G74 22VT/WT (LHD) RIGHT FRONT DOOR AJAR SWITCH SENSE
8 G77 22VT/GY LEFT SLIDING DOOR AJAR SWITCH SENSE
9 E10 20OR/DG (3 ZONE ATC/MTC) PANEL LAMPS DRIVER (REAR BLOWER SWITCH)
10 - -
11 L162 20WT/VT (EXPORT) RIGHT SIDE REPEATER LAMP FEED
12 G42 22VT/WT (POWER SLIDING DOOR) RIGHT SLIDING DOOR PILLAR SWITCH MUX
13 G165 20VT/GY (EXPORT) LIFTGATE CYLINDER LOCK SWITCH MUX
14 G163 22VT/LB LEFT CYLINDER LOCK SWITCH MUX
15 G162 22VT/WT (EXCEPT EXPORT) RIGHT CYLINDER LOCK SWITCH MUX
15 G162 22VT/TN (EXPORT) RIGHT CYLINDER LOCK SWITCH MUX
16 - -
17 F503 20WT/PK FUSED IGNITION SWITCH OUTPUT (RUN)
18 G41 22VT/DG (POWER SLIDING DOOR) LEFT SLIDING DOOR PILLAR SWITCH MUX
19 L163 20WT/BR (EXPORT) LEFT SIDE REPEATER LAMP FEED
20 N4 20DB/WT FUEL LEVEL SENSOR SIGNAL
21 G161 22VT/DG (LHD) LEFT DOOR LOCK SWITCH MUX
21 G160 22VT/LG (RHD) RIGHT DOOR LOCK SWITCH MUX
22 G161 22VT/DG (RHD) LEFT DOOR LOCK SWITCH MUX
22 G160 22VT/LG (LHD) RIGHT DOOR LOCK SWITCH MUX
23 D25 20WT/VT PCI BUS
24 - -
25 M11 20YL/VT COURTESY LAMPS DRIVER
26 P31 20TN/YL (POWER RELEASE) LIFTGATE RELEASE DRIVER
27 - -
28 - -
29 G78 20VT/OR LIFTGATE AJAR SWITCH SENSE
30 G70 22VT/LB (EXPORT) HOOD AJAR SWITCH SENSE
31 F500 18DG/PK FUSED IGNITION SWITCH OUTPUT (RUN)
32 - -
33 M21 20YL/BR COURTESY LAMPS DRIVER
34 M27 20YL/LB READING LAMPS DRIVER

open the driver door you will see a rubber seal loom. one end goes to the door the other to the body of the pillar look at the purple wire. Also here is a wiring list. You need to check continuity from the latch connector to the bcm the left front door ajar switch sense circuit GOOD LUCK~