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Test No. 15: Key Unlock Warning Switch Circuit

  1. Check key unlock warning switch. See STEERING COLUMN SWITCHES article. Replace switch as necessary. Retest system operation. If switch is okay, go to next step.
  2. Check circuits for faults between key unlock warning switch and body control ECU. See WIRING DIAGRAMS . Repair or replace as necessary. If circuits are okay, perform TEST NO. 16: LEFT REAR DOOR COURTESY LIGHT & COURTESY SWITCH CIRCUIT .
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