2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 861

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 861

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

Antilock Brake System - Non-Hybrid Less than 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 00

- Lateral Accelerometer Circuit

DTC C0186 5A

- Lateral Accelerometer Circuit Plausibility Failure

DTC C0196 00

- Yaw Rate Circuit

DTC C0196 5A

- Yaw Rate Circuit Plausibility Failure

Diagnostic Fault Information

Circuit/System Description

The yaw rate and the lateral accelerometer 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 supplies the 12

V to the yaw/lateral accelerometer sensor. The yaw/lateral accelerometer sensor communicates with the EBCM via discrete CAN Bus High and

CAN Bus Low serial data circuits.

Conditions for Running the DTC

The engine is running.

Conditions for Setting the DTC

* Short to ground on the CAN High serial data circuit.

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

* Communication is lost between the EBCM and the yaw/lateral combination sensor.

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

Action Taken When the DTC Sets

One or more of the following actions may occur:

* The EBCM disables the antilock brake system (ABS)/traction control system (TCS) and vehicle stability enhancement system (VSES) for the

duration of the ignition cycle.

* The ABS indicator illuminates.

* The red Brake warning indicator illuminates.