Antilock Brakes / Traction Control Systems

DTC C0899

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview
* Review Strategy Based Diagnosis for an overview of the diagnostic approach. Initial Inspection and Diagnostic Overview
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC C0899

- Device Voltage Low

Circuit/System Description

The electronic brake control module (EBCM) monitors the ignition voltage level available for system operation. A low voltage condition prevents the system from operating properly.

Conditions for Running the DTC

Ignition is ON.

Conditions for Setting the DTC

This fault will be set if the ignition voltage to EBCM is less than 10 volts for 200 msec.

Action Taken When the DTC Sets

Traction Control System (ABS) indicator turns on for the duration of the ignition cycle.

Conditions for Clearing the DTC

* The condition for the DTC is no longer present.
* The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Circuit/System Testing

1. Measure the voltage at the battery terminals.
2. With scan tool read the ignition voltage in the EBCM data list. Verify that battery terminal voltage and ignition voltage readings do not differ more than 1-volt.
* If more than 1-volt test the ground circuit of the EBCM for high resistance. If the circuit test normal, test or replace the EBCM.

3. Go to Engine Cranks Slowly.