2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 371

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 371

* 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, observe the scan tool Park Assist Switch LED parameter while pressing and releasing the park assist disable switch. The parameter

should change between On and Off.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the I/P multifunction switch.

2. Ignition ON, verify a test lamp illuminates between the appropriate ignition circuit listed below and ground:

* RPO X88/Z88 ignition circuit terminal 6

* RPO Z75 ignition circuit terminal 4

瀚慖f the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.

3. Ignition OFF, connect the harness connector at the I/P multifunction switch. Disconnect the X1 harness connector at the object alarm module.

4. Ignition ON, verify the park assist disable LED is not illuminated.

瀚慖f the LED is illuminated, test the control circuit for a short to ground. If the circuit tests normal, test or replace the I/P multifunction

switch.

5. Install a 10A fused jumper wire between the control circuit terminal 3 and ground. Verify that the park assist disable LED is illuminated.

瀚慖f the LED is not illuminated, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or

replace the I/P multifunction switch.

6. If all circuits test normal, replace the object alarm module.

Repair Instructions

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

* Rear Object Alarm Module Switch Replacement (Escalade) (See: Accessories and Optional Equipment/Collision Avoidance and Parking

Assist Systems/Parking Assist Switch/Service and Repair/Rear Object Alarm Module Switch Replacement (Escalade))Rear Object Alarm

Module Switch Replacement (Tahoe/Yukon) (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist

Systems/Parking Assist Switch/Service and Repair/Rear Object Alarm Module Switch Replacement (Tahoe/Yukon))

* Control Module References (See: Testing and Inspection/Programming and Relearning) for Object Alarm Module replacement, setup, and

programming.

B1000

DTC B1000

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.