The isolation and prime valve solenoid circuits are supplied with battery power when the ignition is in the ON position. The electronic brake control module (EBCM) controls the valve functions by grounding the circuit when necessary.
This diagnostic procedure supports the following DTCs:
• | DTC C0141 LF TCS Solenoid/Motor #1 Circuit |
• | DTC C0146 LF TCS Solenoid/Motor #2 Circuit |
• | DTC C0151 RF TCS Solenoid/Motor #1 Circuit |
• | DTC C0156 RF TCS Solenoid/Motor #2 Circuit |
• | The ignition switch is in the ON position. |
• | The DTC can be set after system initialization. |
The DTC will set when the EBCM detects one of the following internal to the EBCM only:
• | An open in the solenoid coil or circuit. |
• | A short to ground in the solenoid coil or circuit. |
• | A short to voltage in the solenoid coil or circuit. |
If equipped, the following actions occur:
• | The EBCM disables the ABS/TCS for the duration of the ignition cycle. |
• | A malfunction DTC is set. |
• | The TCS warning indicator turns ON. |
• | The Red BRAKE Warning indicator could turn ON. |
• | The ABS indicator could turn ON. |
• | Condition for DTC is no longer present and scan tool clear DTC function is used. |
• | 100 ignition cycles pass with no DTCs detected. |
The solenoid valve circuit and the solenoid coil are internal to the EBCM. No part of the solenoid circuit is diagnosable external to the EBCM. The DTC sets when there is a malfunction in the solenoid circuit internal to the EBCM only.
The number below refers to step number on the Diagnostic Table.
Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: Antilock Brake System Schematics Connector End View Reference: Component Connector End Views | |||
1 | Did you perform the Diagnostic System Check -- Vehicle? | Go to Step 2 | |
Did any one of the DTCs C0141-C0156 reset as a current DTC? | Go to Step 3 | Go to Diagnostic Aids | |
3 | Replace the electronic brake control module (EBCM). Refer to Brake Pressure Modulator Valve Assembly Replacement . Is the repair complete? | Go to Step 4 | -- |
4 |
Does the DTC reset? | Go to Step 2 | System OK |