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Home >> Chevrolet >> 2013 >> Volt >> Repair and Diagnosis >> External Pages >> Different car >> Section 193 (Object Detection System - Park Assist System) >> Diagnostic Information and Procedures >> DTC B1405 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2012 Chevrolet Volt. However, it is still accessible from the selected car via links, so may be relevant.
  1. Vehicle OFF, disconnect the harness connector at each of the object sensors.
  2. Start at the B78G rear object sensor-left outer, Vehicle in Service Mode, activate the park assist, test for 6.3-10.4 V between the 8 V reference circuit terminal 1 at the object sensor harness connector and ground.
    • If less than the specified range, test the 8 V reference circuit for a short to ground. If the circuit tests normal, replace the K41 parking assist control module.
    • If greater than the specified range, test the 8 V reference circuit for a short to voltage. If the circuit tests normal, replace the K41 parking assist control module.
  3. Install each object alarm sensor harness connector one at a time, checking DTCs after each sensor is connected. Verify DTC B1405 is not set as current.
    • If the DTC is set, replace the object alarm sensor that was connected immediately before the DTC set.
    4. NOTE:

    Make sure to check front object sensors.

  4. If all circuits test normal, replace the K41 parking assist control module.
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