2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2140

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2140

Circuit/System Verification

Engine ON, while rotating the steering wheel to both steering stops, observe the scan tool Cruise Control Switch parameter while pressing each of

the cruise control switches. The parameter should toggle between On, Off, Resume, and Set as the applicable switch is pressed.

Circuit/System Testing

Cruise Control Switch Circuit Malfunction

1. Ignition OFF, disconnect the harness connector at the steering wheel controls switch - left.

2. Ignition ON, test for B+ between the B+ circuit terminal 1 and ground.

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

BCM.

3. Test for B+ between the B+ circuit terminal 1 and the signal circuit terminal 3.

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

the BCM.

4. Ignition OFF, disconnect the X1 harness connector at the BCM.

5. Test for infinite resistance between the signal circuit terminal 3 and ground.

瀚慖f less than the specified value, test the signal circuit for a short to ground.

6. If all circuits test normal, test or replace the steering wheel control switch - left.

Component Testing

Steering Wheel Control Switch - Left

1. Disconnect the harness connector at the steering wheel controls switch - left.

2. Cruise control switch ON, measure the resistance between terminal 1 and terminal 3 while individually activating and holding each cruise

control function switch and compare the resistance reading to the values in the table below.

瀚慖f not within the specified resistance range, replace the steering wheel controls switch - left.

Repair Instructions

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

* Steering Wheel Control Switch Assembly Replacement (See: Accessories and Optional Equipment/Sensors and Switches - Accessories and

Optional Equipment/Steering Mounted Controls Assembly/Service and Repair)

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

P0572

DTC P0572 or P0573

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.

DTC Descriptors

DTC P0572

- Brake Switch Circuit 1 Low Voltage