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Test Y: Trunk Ajar Indicator Inoperative

  1. After reviewing indicator/warning message description and operation, go to next step. See INDICATOR/WARNING MESSAGE  under DESCRIPTION & OPERATION.
  2. Observe trunk ajar indicator on instrument cluster with trunk closed. If trunk ajar indicator is illuminated, go to next step. If trunk ajar indicator is not illuminated, concern may be intermittent. See PROBLEM DIAGNOSIS  under INTERMITTENTS.
  3. Disconnect rear compartment courtesy lamp. Rear compartment courtesy lamp is located on rear compartment lid. Connect fused jumper wire between ground and rear compartment courtesy lamp signal circuit of bulb holder (Brown/Blue wire). If trunk ajar indicator illuminates, go to next step. If trunk ajar indicator does not illuminate, go to step  6 .
  4. Connect fused jumper wire between rear compartment courtesy lamp ground (Black wire) and rear compartment courtesy lamp signal circuit of bulb holder (Brown/Blue wire). If trunk ajar indicator illuminates, go to next step. If trunk ajar indicator does not illuminate, go to step  8 .
  5. Connect rear compartment courtesy lamp. Disconnect rear compartment courtesy lamp switch harness connector. Connect fused jumper wire between ground and rear compartment courtesy lamp switch harness connector (Brown/Blue wire). If trunk ajar indicator illuminates, go to step  7 . If trunk ajar indicator does not illuminate, go to step  9 .
  6. Check for open or high resistance in rear compartment courtesy lamp signal circuit (Brown/Blue wire) between IPC harness connector C1 terminal No. 10 and rear compartment courtesy lamp. See Figure . See WIRING DIAGRAMS  . If problem is found, repair as necessary and go to step  13 . If no problem is found, go to step  12 .
  7. Check for poor, loose or corroded terminal in rear compartment courtesy lamp switch harness connector. If problem is found, repair as necessary and go to step  13 . If no problem is found, go to step  10 .
  8. Check for poor, loose or corroded terminal in rear compartment courtesy lamp harness connector. If problem is found, repair as necessary and go to step  13 . If no problem is found, go to step  11 .
  9. Repair open or high resistance rear compartment courtesy lamp switch signal circuit (Brown/Blue wire) between IPC harness connector C1 terminal No. 10 and rear compartment courtesy lamp switch. See WIRING DIAGRAMS  . After repairs are made, go to step  13 .
  10. Replace rear compartment courtesy lamp assembly. After repairs are made, go to step  13 .
  11. Replace rear compartment courtesy lamp switch. After repairs are made, go to step  13 .
  12. Replace IPC. See INSTRUMENT PANEL CLUSTER  under REMOVAL & INSTALLATION. After repairs are made, go to next step.
  13. Operate system to verify repair. If system operates normally, testing is complete. If system does not operate normally, go to step  3 .
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