For 1990-2009 cars only
Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC C0899: Device Voltage LowCircuit/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 9 volts for 100 msec.
Action Taken When the DTC Sets
| • | Traction control system (TCS) and vehicle stability enhancement system (VSES) for the duration of the ignition cycle. |
| • | The TCS indicator turns ON. |
| • | The DIC displays the Service Stability System message. |
Conditions for Clearing the DTC
| • | The condition for the DTC is no longer present and the DTC is cleared with a scan tool. |
| • | The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles. |
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Antilock Brake System Connector End Views
Electrical Information Reference
Circuit/System Testing
- Measure the voltage at the battery terminals.
- 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.
- Go to Charging System Test .
| ⇒ | If more than 1 volt, test the ignition voltage and ground circuits of the EBCM for high resistance or replace the EBCM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for EBCM replacement, setup and programming
