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Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the ignition key alarm switch.
  2. Ignition OFF, test for less than 1Ω between the ground circuit terminal 1 and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify the scan tool Key in Ignition parameter is No.
    • If not the specified value, test the signal circuit terminal 2 for a short to ground. If the circuit tests normal, replace the theft deterrent key transponder.
  4. Install a 3A fused jumper wire between the signal circuit terminal 2 and the ground circuit terminal 1. Verify the scan tool Key in Ignition parameter is Yes.
    • If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the theft deterrent key transponder.
  5. If all circuits test normal, test or replace the ignition key alarm switch.
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