2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2143

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2143

Diagnostic Fault Information

Circuit/System Description

The TCC Brake signal circuit is a high voltage input to the body control module (BCM), engine control module (ECM), transmission control

module (TCM), Power Take Off (PTO) module (if equipped) and Trailer Brake controller (if equipped). The BCM monitors the stop lamp switch

circuit to detect when the brake pedal has been applied. The ECM monitors the TCC Brake signal to determine when the brake pedal is applied.

When the brake pedal is applied, the BCM sends a serial data message to the ECM indicating that the brake pedal has been applied. The ECM

senses a high voltage signal on the brake switch signal circuit when the stop lamp switch is closed.

Conditions for Running the DTC

* The engine is running.

* Battery voltage is greater than 11.5 volts.

Conditions for Setting the DTC

P0572

The ECM detects a low voltage signal on the TCC brake signal circuit for more than 2 seconds when the serial data message from the BCM

indicates the brakes are applied. The ECM sets the DTC when the condition has been detected 8 out of 10 times.

P0573

The ECM detects a high voltage signal on the TCC brake signal circuit for more than 2 seconds when the serial data message from the BCM

indicates the brakes are released. The ECM sets the DTC when the condition has been detected 8 out of 10 times.

Actions Taken When the DTC Sets

* The cruise control system becomes disabled.

* The malfunction indicator lamp (MIL) will not illuminate.

Conditions for Clearing the DTC

* The condition responsible for setting the DTC no longer exists.

* A history DTC will clear after 40 malfunction-free ignition cycles have occurred.

Reference Information

Schematic Reference

* Cruise Control Schematics (See: Cruise Control/Diagrams/Electrical Diagrams)

* Exterior Lights Schematics (See: Diagrams/Electrical Diagrams/Lighting and Horns/System Diagram/Exterior Lights Schematics)

Connector End View Reference

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

Description and Operation

Cruise Control Description and Operation (See: Cruise Control/Description and Operation)

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) for scan tool information