Driver Door Fails To Unlock From Any Switch
WARNING: This page is about a different car, the 2002 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes:
- Left Headlamp Fuse open.
- Driver Door Unlock Relay Output circuit short to ground.
- CTM - Driver Door Unlock Relay.
CAUTION:
Always turn ignition off before disconnecting or connecting any control module connector. Failure to do so could result in damage to control module.
NOTE:
Ensure vehicle being tested has a fully charged battery. If it does not, false symptoms may occur.
NOTE:
For component location, see appropriate illustration under COMPONENT LOCATIONS
. For terminal identification, see appropriate illustration under CONNECTOR IDENTIFICATION
. For circuit and wire color identification, see WIRING DIAGRAMS
. For component removal and installation procedures, see appropriate component under REMOVAL & INSTALLATION
.
NOTE:
The same fuse that supplies the left Headlamps also supplies current for the Driver Door Unlock Relay.
Testing:
- Turn Headlamps on. Do the left Headlamps operate properly? If yes, go to next step. If no, check PDC Fuse CTMB and diagnose any Exterior Lighting System symptoms. See SYMPTOM IDENTIFICATION .
- Turn ignition off. Disconnect CTM C2 harness connector. Measure resistance between ground and CTM C2 harness connector terminal No. 5. Is resistance less than 1000 ohms? If yes, repair Door Unlock Relay Output circuit for a short to ground. Perform BODY VERIFICATION TEST under VERIFICATION TESTS. If no, go to next step.
- If there are no possible causes remaining, replace CTM. Perform BODY VERIFICATION TEST under VERIFICATION TESTS.