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Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the theft deterrent key transponder amplifier.
  2. No key in ignition cylinder, test for less than 1V between the 5 volt reference circuit terminal 14 and ground.
    • If greater than the specified range, test the 5 volt reference circuit for a short to voltage. If the circuit tests normal, replace the theft deterrent key transponder
  3. Key in ignition cylinder, test for 4.6-5.4V between the 5 volt reference circuit terminal 14 and ground.
    • If greater than the specified range, test the 5 volt reference circuit for a short to voltage. If the circuit tests normal, replace the theft deterrent key transponder.
    • If less than the specified range, test the 5 volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the theft deterrent key transponder.
  4. Key in ignition cylinder, test for 4.6-5.4V between the 5 volt reference circuit terminal 14 and the low reference circuit terminal 5. If the circuit tests normal, replace the theft deterrent key transponder.
    • If not within the specified range, test the low reference circuit for an open/high resistance.
  5. If all circuits test normal, replace the theft deterrent key transponder amplifier.
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