All Doors Will Not Unlock Using Transmitter
- Unlock driver's door. Using a voltmeter, backprobe BCM 20-pin connector, terminal No. 4 (Dark Blue/White wire). See Fig 1
. Check for a voltage pulse while pressing transmitter UNLOCK button. If there is no voltage pulse, replace BCM. See BODY CONTROL MODULE (BCM)
under REMOVAL & INSTALLATION. If voltage pulse is present, repair circuit between BCM and driver's door lock motor. See WIRING DIAGRAMS
.
- Check for voltage pulse at BCM 20-pin connector, terminals No. 1 (Pink/Light Blue wire), 2 (Pink/dark Blue wire) and 3 (Pink/Black wire) while pressing transmitter UNLOCK button twice within 5 second interval. If there is no voltage pulse at any terminal, replace BCM. See BODY CONTROL MODULE (BCM)
under REMOVAL & INSTALLATION. If voltage pulse is present at all terminals, repair suspect circuit between appropriate BCM terminal and suspect door lock motor. See WIRING DIAGRAMS
.
Courtesy of DAIMLERCHRYSLER CORP.