The system relays are energized when the ignition is ON and the vehicle speed is greater than 6 km/h (4 mph). The system relay supplies voltage to the solenoid valves and to the pump motor. This voltage is referred to as the system voltage. The EBCM controls the solenoid valves by grounding the control circuit.
• | The ignition is ON. |
• | The vehicle speed is greater than 6 km/h (4 mph). |
The EBCM detects an internal malfunction.
If equipped, the following actions occur:
• | The EBCM disables the DRP/ABS. |
• | The ABS indicator turns ON. |
• | The red Brake warning indicator turns ON. |
• | The DIC displays the SERVICE BRAKE SYSTEM message. |
If equipped, the following actions occur:
• | The EBCM disables the ABS. |
• | The ABS indicator turns ON. |
• | The DIC displays the SERVICE BRAKE SYSTEM message. |
The conditions for setting the DTC are no longer present and you use the scan tool Clear DTCs function.
An intermittent open/shorted solenoid DTC can be set by several different internal EBCM problems. Replace the EBCM if an open/shorted solenoid DTC continues to set intermittently.
Step | Action | Yes | No |
---|---|---|---|
1 | Did you perform the ABS Diagnostic System Check? | Go to Step 2 | |
2 |
Does the DTC set? | Go to Step 3 | Go to Diagnostic Aids |
3 |
Important: Following EBCM replacement, use the scan tool to perform the Tire Size Calibration procedure and the Trim Level Calibration procedure, if applicable. Replace the EBCM. Refer to Electronic Brake Control Module Replacement . Did you complete the replacement? | Go to Step 4 | -- |
4 |
Does the DTC reset? | Go to Step 3 | System OK |