October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
No Communication With Driver's Door Module
- Check Power Supply
- Disconnect 4-pin connector from driver's door module. Measure voltage between ground and Black/White wire at 4-pin connector. If battery voltage is not present, go to next step. If battery voltage is present, go to step 4).
- Check Black/White Wire For Short
- Remove door lock/seat motor 20-amp circuit breaker from engine compartment fuse box located near battery. Measure resistance between ground and Black/White wire at 4-pin connector. If resistance is greater than 10 k/ohms, go to next step. If resistance is less than 10 k/ohms, repair Black/White wire for short to ground and retest.
- Check Power At Door Lock/Seat Motor Circuit Breaker
- Check for battery voltage at input side of door lock/seat motor 20-amp circuit breaker. If battery voltage is present, repair Black/White wire for open. If battery voltage is not present, repair open power supply to engine compartment fuse box. See POWER DISTRIBUTION article in WIRING DIAGRAM
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- Check Ground Circuits
- Disconnect 18-pin connector from driver's door module. Measure resistance between ground and both Black wires at 18-pin connector. If resistances are greater than 5 ohms, repair open in Black wire(s) in question and retest. If resistances are less than 5 ohms, see MODULE COMMUNICATIONS NETWORK
article for network diagnostics.