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Circuit/System Testing

WARNING: This page is about a different car, the 2011 Chevrolet Cruze. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the appropriate harness connector at the appropriate tail lamp listed below:
    • E5A Backup Lamp - Left
    • E5B Backup Lamp - Right
  2. Test for less than 5 Ω between the appropriate ground circuit harness connector terminal listed below and ground:
    • E5A Backup Lamp - Left harness connector terminal 3
    • E5B Backup Lamp - Right harness connector terminal 3
    • If greater than the specified value, test the appropriate ground circuit for an open/high resistance.
  3. Connect a test lamp between the appropriate control circuit harness connector terminal listed below and ground:
    • E5A Backup Lamp - Left harness connector terminal 1
    • E5B Backup Lamp - Right harness connector terminal 1
  4. Command the Backup Lamps test with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
    • If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 Body Control Module.
    • If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuits test normal, replace the K9 Body Control Module.
  5. If all circuits test normal, replace the appropriate backup lamp.
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