2010 Cadillac Truck SRX FWD V6-3.0L Page 217

2010 Cadillac Truck SRX FWD V6-3.0L Page 217

Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Object Detection Description and Operation (UVC) (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist

Systems/Description and Operation/Object Detection (UVC))Object Detection Description and Operation (UD5) (See: Accessories and Optional

Equipment/Collision Avoidance and Parking Assist Systems/Description and Operation/Object Detection Description and Operation (UD5))

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)

Circuit/System Verification

Ignition ON, activate the parking assist, observe the scan tool Park Assist Sensor Reference Voltage parameter. The reading should be between

7.2-9.2 V.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at each of the object sensors.

2. Ignition ON, activate the park assist, test for 7.5-9.0 V between the 8 V reference circuit terminal 1 at the B78G Rear Object Sensor - Left

Outer harness connector and ground.

瀚慖f less than the specified range, test the 8 V reference circuit for a short to ground. If the circuit tests normal, replace the K41 Parking

Assist Control Module.

瀚慖f greater than the specified range, test the 8 V reference circuit for a short to voltage. If the circuit tests normal, replace the K41 Parking

Assist Control Module.

3. Install each object alarm sensor harness connector one at a time, checking DTCs after each sensor is connected. Verify DTC B138A is not set

as current.

瀚慖f 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 K41 Parking Assist Control Module.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests).

* Front Object Alarm Sensor Replacement (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist

Systems/Parking Assist Distance Sensor/Service and Repair/Front Object Alarm Sensor Replacement)

* 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)

* Control Module References (See: Testing and Inspection/Programming and Relearning)

B144A

DTC B144A

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.