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Circuit/System Testing

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the connector at the S38 On/Off Vehicle Switch.
    2. NOTE:

    If the Green Run/Start/Propulsion Indicator functions the next step does not need to be performed.

  2. Verify a test lamp illuminates between the ground circuit terminal 3 and B+.
    • If the test lamp does not illuminate 

      Repair the open/high resistance on circuit 1351 or ground connection.

    • Go to next step: If the test lamp illuminates 
  3. Connect the connector at the S38 On/Off Vehicle Switch.
  4. Ignition On Vehicle in Run mode
  5. Disconnect connector at the S38 On/Off Vehicle Switch and connector X2 at the K9 Body Control Module.
  6. Test less than 1 V Between control circuit terminal 2 and ground.
    • Go to next step: If 1 V or greater 

      Go to next step: Repair the short to voltage on circuit 5720.

    • Go to next step: If less than 1 V 
  7. Replace the K9 Body Control Module.
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