2010 Cadillac Truck Escalade AWD V8-6.2L Page 467
The parking assist control module has detected the 8 V reference circuit is greater than 10.4 V.
Action Taken When the DTC Sets
* The parking assist is disabled.
* The driver information center displays SERVICE PARK ASSIST.
Conditions for Clearing the DTC
The condition for setting the DTC is no longer present.
Reference Information
Schematic Reference
Object Detection Schematics (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist Systems/Diagrams/Electrical
Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Object Detection Description and Operation (UFT) (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist
Systems/Description and Operation/Object Detection Description and Operation (UFT))Object Detection Description and Operation (UVC) (See:
Accessories and Optional Equipment/Collision Avoidance and Parking Assist Systems/Description and Operation/Object Detection Description and
Operation (UVC))Object Detection Description and Operation (UD7) (See: Accessories and Optional Equipment/Collision Avoidance and
Parking Assist Systems/Description and Operation/Object Detection Description and Operation (UD7))
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Ignition ON, transmission in REVERSE, observe the scan tool Sensor Feed Voltage Output parameter. The reading should be between 6.3-10.4 V.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at each of the object sensors.
2. Ignition ON, transmission in REVERSE, test for 6.3-10.4 V between the 8 V reference circuit terminal 1 at the rear object sensor harness
connector and ground.
锟斤拷If less than the specified range, test the 8 V reference circuit for a short to ground. If the circuit tests normal, replace the rear object alarm
module.
锟斤拷If greater than the specified range, test the 8 V reference circuit for a short to voltage. If the circuit tests normal, replace the rear object
alarm 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.
锟斤拷If the DTC is set, replace the object alarm sensor that was connected immediately before the DTC set.
4. If all circuits test normal, replace the rear object alarm module.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Rear Object Sensor Replacement (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist Systems/Parking
Assist Distance Sensor/Service and Repair/Rear Object Sensor Replacement)
