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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1809 (Object Detection System - Park Assist System) >> Diagnostic Information and Procedures >> DTC B0968 >> Circuit/System Testing
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Circuit/System Testing

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  1. Ignition OFF, disconnect the harness connector at the I/P multifunction switch.
  2. Ignition ON, verify a test lamp illuminates between the appropriate ignition circuit listed below and ground:
    • RPO X88/Z88 ignition circuit terminal 6
    • RPO Z75 ignition circuit terminal 4
    • If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
  3. Ignition OFF, connect the harness connector at the I/P multifunction switch. Disconnect the X1 harness connector at the object alarm module.
  4. Ignition ON, verify the park assist disable LED is not illuminated.
    • If the LED is illuminated, test the control circuit for a short to ground. If the circuit tests normal, test or replace the I/P multifunction switch.
  5. Install a 10A fused jumper wire between the control circuit terminal 3 and ground. Verify that the park assist disable LED is illuminated.
    • If the LED is not illuminated, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the I/P multifunction switch.
  6. If all circuits test normal, replace the object alarm module.
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