• | Perform the Diagnostic System Check - Vehicle prior to using the diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
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.
• | The vehicle speed is greater than 8 km/h (5 mph). |
• | The system relay is commanded ON. |
• | During initialization or when the system is inactive, the system voltage is less than 10.8 volts. |
• | During the system operation, the system voltage is less than 9.0 volts. |
• | The EBCM disables the ABS for the duration of the ignition cycle. |
• | The TC indicator turns ON. |
• | The ABS indicator turns ON. |
• | 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. |
Antilock Brake System Schematics
⇒ | If more than 1 volt test the ground circuit of the EBCM for high resistance or replace the EBCM. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for EBCM replacement, setup and programming |