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Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 774 (Object Detection System) >> Diagnostic Information and Procedures >> DTC B1E3A >> Circuit/System Testing
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Circuit/System Testing

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IMPORTANT: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.
  • The rear object sensors
  • The object alarm module
  • The object sensors wiring harness connector
  • The object alarm module wiring harness connector
  1. Ignition ON and the scan tool installed, verify that DTC B1325 is not current.
  2. Ignition ON and the scan tool installed, verify that DTC B0958, B0959, B0960 or B0961 is not current.
  3. Ignition ON and with the transmission range in REVERSE, verify that the scan tool Sensor Feed Voltage Output parameter is between 7.2 V - 9.2 V.
    • If less than 7.2 V, test the supply voltage circuit of the object alarm sensor for a short to ground or an open/high resistance. If the circuit tests normal, replace the rear object alarm module.
    • If greater than 9.2 V, test the supply voltage circuit of the object alarm sensor for a short to voltage. If the circuits test normal, replace the object alarm module.
  4. If all circuits test normal, test or replace the suspect object alarm sensor for the rear or front object alarm system.
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