2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 863

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 863

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

Antilock Brake System - Non-Hybrid Greater than/Equal to 3900 kg (8600 lb) GVW

DTC C0186 or C0196

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 C0186 55

- Lateral Accelerometer Circuit Expected Number of Transition/Events Exceeded

DTC C0186 5A

- Lateral Accelerometer Circuit Plausibility Failure

DTC C0186 0F

- Lateral Accelerometer Circuit Erratic

DTC C0196 55

- Yaw Rate Circuit Expected Number of Transition/Events Exceeded

DTC C0196 5A

- Yaw Rate Circuit Plausibility Failure

DTC C0196 0F

- Yaw Rate Circuit Erratic

Circuit/System Description

The lateral accelerometer and the yaw rate sensors are combined into one sensor external to the electronic brake control module (EBCM). The

vehicle stability enhancement system (VSES) uses the lateral accelerometer input when calculating the desired yaw rate. The EBCM recieves the

yaw/lateral accelerometer sensor data from dedicated serial data circuits.

Conditions for Running the DTC

* Ignition ON.

* Ignition voltage is greater than 10 volts.

Conditions for Setting the DTC

* The yaw/lateral accelerometer sensor fails an internal self test.

* The correlation error between the yaw/lateral accelerometer sensor and steering angle sensor.

Actions Taken when the DTC Sets

* The EBCM disables the StabiliTrak for the duration of the ignition cycle.

* A DIC message and/or a warning indicator may be displayed.

Conditions for Clearing the DTC

* The condition for the DTC is no longer present.

* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.

Diagnostic Aids

An incorrectly mounted sensor can cause these faults.

Reference Information

Schematic Reference

Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)