2010 Cadillac CTS Sedan AWD V6-3.6L Page 265

2010 Cadillac CTS Sedan AWD V6-3.6L Page 265

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

Description and Operation

Object Detection Description and Operation (UD7 with Display) (See: Accessories and Optional Equipment/Collision Avoidance and Parking

Assist Systems/Description and Operation/Object Detection Description and Operation (UD7 with Display))Object Detection Description and

Operation (UD7 Audio Only) (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist Systems/Description and

Operation/Object Detection Description and Operation (UD7 Audio Only))Object Detection Description and Operation (B3T) (See: Accessories

and Optional Equipment/Collision Avoidance and Parking Assist Systems/Description and Operation/Object Detection Description and Operation

(B3T))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))

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

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

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/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, command the Rear Red LED, Rear Yellow LED 1, and Rear Yellow LED 2 ON and OFF with a scan tool. The appropriate indicator

should turn on and off as commanded.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the rear parking assist display.

2. Ignition ON, test for 10.0-12.5 V between the supply voltage circuit terminal A and ground.

瀚慖f less than the specified range, test the supply voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal,

replace the rear object sensor control module.

瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the rear object sensor

control module.

3. Command the appropriate LED ON with a scan tool and test for 9.5-12.5 V between the appropriate control circuit listed below and ground:

* Amber 1 LED - terminal B

* Amber 2 LED - terminal C

* Red LED - terminal D

瀚慖f less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace

the rear object sensor control module.

瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the rear object sensor

control module.

4. If all circuits test normal, test or replace the rear parking assist display.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Information Center Telltale Assembly Replacement (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist

Systems/Parking Assist Warning Indicator/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for Rear Object Sensor Control Module

replacement, setup, and programming.

With RPO Y41

DTC B0996 (with RPO Y41)

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