Sunday, August 4, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 278


B0958 3A, B0959 3A, B0960 3A, B0961 3A



The object alarm module determines there is an incorrect sensor installed.



Action Taken When the DTC Sets



* The parking assist system is disabled.



* The object alarm module sends a serial data message to the instrument panel cluster (IPC) to display SERVICE PARK ASSIST message in the



driver information center (DIC).



Conditions for Clearing the DTC



* The DTC will transition to history when the fault is no longer present.



* A history DTC will clear after 100 malfunction-free ignition cycles.



Diagnostic Aids



Make sure the object alarm sensors located on the vehicle rear bumper are clear. Remove any snow, mud or ice that is blocking the sensors.



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)



* 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)



* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic



Procedures/Connector Repairs/Connector Repairs)



Scan Tool Reference



Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information



Circuit/System Verification



1. Verify that DTC B1405 is not set.



锟斤拷 If DTC is set, refer to DTC B1405 (See: B1405).



2. Verify that DTC B0958 3A, DTC B0959 3A, DTC B0960 3A, or DTC B0961 3A is not set.



锟斤拷 If DTC is set, replace the appropriate object alarm sensor.



3. Transmission in REVERSE, verify the parking assist system is enabled and one audible beep sounds.



Circuit/System Testing



Single Object Alarm Sensor DTC Set



1. Ignition OFF, disconnect the harness connector at the appropriate object alarm sensor.



2. Ignition OFF for 30 seconds, test for less than 20 Ohms between the low reference circuit terminal 2 and ground.



锟斤拷 If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the object

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