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Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the rear parking assist display.
  2. Ignition ON, test for 10.0-12.5 V between the supply voltage circuit terminal A and ground.
    • If less than the specified range, test the supply voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the rear object sensor control module.
    • If greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the rear object sensor control module.
  3. Command the appropriate LED ON with a scan tool and test for 9.5-12.5 V between the appropriate control circuit listed below and ground:
    • Amber 1 LED - terminal B
    • Amber 2 LED - terminal C
    • Red LED - terminal D
    • If less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the rear object sensor control module.
    • If greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the rear object sensor control module.
  4. If all circuits test normal, test or replace the rear parking assist display.
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