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Left Rear Door Fails To Lock/Unlock

  1. Remove driver's rear door inner trim panel. Disconnect door lock motor/ajar switch connector. Remove passenger's door inner trim panel. Ensure Passenger's Door Module (PDM) is connected. Connect test light between driver's rear door lock motor/ajar switch connector terminals No. 3 (Pink/Violet wire) and No. 4 (Orange/Violet wire). See Figure . Using scan tool, actuate PAS LOCK RELAY, then PAS UNLOCK RELAY while monitoring test light. If test light does not illuminate during each actuation, go to next step. If test light illuminates during each actuation, replace door lock motor. See appropriate POWER DOOR LOCKS & REMOTE KEYLESS ENTRY SYSTEMS article. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  2. Turn ignition off. Disconnect PDM C1 connector. Using DVOM, measure resistance of Orange/Violet wire between driver's rear door lock motor/ajar switch connector terminal No. 4 and PDM C1 connector terminal No. 5. See Figure and Figure . If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open in Orange/Violet wire. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  3. Using DVOM, measure resistance of Pink/Violet wire between driver's rear door lock motor/ajar switch connector terminal No. 3 and PDM C1 connector terminal No. 7. If resistance is less than 5 ohms, test is complete. If resistance is 5 ohms or greater, repair open in Pink/Violet wire. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
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