The solenoid valves are integral parts of the brake pressure modulator valve assembly. The brake pressure modulator valve assembly contains an isolation solenoid valve and a dump solenoid valve for each wheel and a traction control/stability control supply solenoid valve and isolation solenoid valve for each brake circuit. The solenoid valves are not engaged during normal system operation. When the ABS, traction control or stability control operation is required the electronic brake control module (EBCM) turns the required solenoid valves ON.

Ignition ON

Calculated solenoid valve temperature is greater than threshold.

C0274 54 or C0275 54

C0280 54

The condition for setting the DTC is no longer present.

DTCs can set because of extended operation of ABS, traction control or stability control.

Schematic Reference

Antilock Brake System Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

ABS Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, observe the scan tool Inlet, Outlet, Isolation, and Prime Solenoid Valve Feedback parameters. The readings should be Inactive.

1. Ignition ON, verify that DTC C0187, C0196, C019B, or C0710 is not set as a present DTC.

⇒	If any listed DTC is present, refer to Diagnostic Trouble Code (DTC) List - Vehicle to diagnose that DTC prior to this diagnostic.

2. Ignition OFF, let the hydraulic modulator cool down to ambient temperature.
3. Ignition ON, verify that DTC C0274 54, C0275 54, or C0280 54 is not set as a present DTC.

⇒	If any listed DTC is present, replace the K17 Electronic Brake Control Module (EBCM) and verify DTC does not reset. If the DTC resets replace the brake pressure modulator valve assembly.