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Circuit/System Testing

WARNING: This page is about a different car, the 2010 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the KR104A battery saver relay.
  2. Connect a test lamp between the relay control circuit and ground.
  3. Enable and disable the batter saver mode. The test lamp should turn ON and OFF when changing the relay latch positions.
    • If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
    • If the test lamp is always OFF, test the control circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the K9 BCM.
  4. If all circuits test normal, test or replace the KR104A battery saver relay.
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