• | 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. |
The electronic brake control module (EBCM) monitors the ignition 1 voltage (IGN1) level available for system operation. A low voltage condition prevents the system from operating properly.
The ignition is ON.
• | Ignition 1 (IGN1) voltage to EBCM is less than 6.5 volts for 7 seconds. |
• | Vehicle speed is greater than 3 km/h (2 mph). |
Brake Warning 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
Antilock Brake System Connector End Views
Scan Tool Data List for EBCM
• | A possible cause of this DTC could be overcharging with a battery charger or jump starting. |
• | A high voltage value in multiple modules indicates a concern in the charging system. |
⇒ | If more than 1 volt, replace the EBCM. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for EBCM replacement, setup, and programming