Monday, June 17, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 385


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)

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