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Circuit/System Testing

  1. Ignition OFF, disconnect harness connectors at all rear object sensors.
  2. Ignition ON, transmission in REVERSE, test for 8.0 V - 9.0 V between object sensor supply voltage circuit terminal 1 and ground.
    • If less than the specified range, test the supply voltage circuit for a short to ground. If all circuits test normal, replace the object alarm module.
      IMPORTANT: A short to voltage on the component signal circuit may cause this DTC to set.
    • If greater than the specified range, test the supply voltage circuit for a short to voltage. If all circuits test normal, replace the object alarm module.
  3. Connect each rear object sensor one at a time, while monitoring Sensor Feed Voltage Output scan tool parameter. The parameter value should be greater than 8.0 V.
    • If less than the specified value after an individual object sensor is connected, test or replace that object sensor.
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