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 LowDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Battery Voltage | C0899 | C0899 | -- | -- |
Circuit/System Description
The electronic brake control module (EBCM) monitors the battery 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 battery voltage to EBCM is less than 10 volts for 200 msec.
Action Taken When the DTC Sets
| • | ABS indicator turns ON until voltage returns above 10 volts. |
| • | The ETS indicator turns ON. |
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. |
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Antilock Brake System Connector End Views
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
- Measure the voltage at the battery terminals.
- With scan tool, read the battery voltage in the EBCM data list. Verify that battery terminal voltage, and battery voltage readings do not differ more than 1 volt.
- Refer to Battery Inspection/Test or Charging System Test .
| ⇒ | 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. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for EBCM replacement, setup and programming
