• | 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 an internal input from the master cylinder pressure sensor to enhance antilock brake system (ABS) braking and vehicle stability if equipped.
Ignition ON.
• | When vehicle speed is more than 7 km/h (4 mph), the master cylinder pressure does not change for 30 seconds with the brake applied. |
• | When vehicle speed is more than 10 km/h (6 mph), the master cylinder pressure signal is erratic. |
• | Master cylinder pressure signal is out of range. |
• | Master cylinder pressure is high for 5 seconds with the stop lamp switch signal OFF. |
• | The EBCM disables traction control system (TCS) and vehicle stability enhancement system (VSES) for the duration of the ignition cycle. |
• | A DIC message and/or a warning indicator may be displayed. |
• | The condition for the DTC is no longer present. |
• | The EBCM clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles. |
The master cylinder pressure sensor is located internally in the Master Cylinder and is not serviceable.
Control Module References for scan tool information
Important: It is recommend that the defective components be replaced, and not the complete brake master cylinder assembly.
⇒ | If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for EBCM and BPMV replacement, setup, and programming