C0280

DTC C0280

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC C0280 54

-
Stability System Active Too Long High Temperature

Circuit/System Description

The solenoid valves are integral parts of the brake pressure modulator. The brake pressure modulator 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 antilock brake system, traction control or stability control operation is required the electronic brake control module turns the required solenoid valves ON.

Conditions for Running the DTC

Ignition ON.

Conditions for Setting the DTC

Stability control is active for greater than 15 seconds.

Action Taken When the DTC Sets

* The traction control/stability control-active indicator turns ON.

* The electronic brake control module disables the electronic stability control for the duration of the ignition cycle.

Conditions for Clearing the DTC

* The DTC clears when the diagnostic runs and passes.

* The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred.

Diagnostic Aids

This DTC will set due to extended operation of the antilock brake system, traction control or stability control.

Reference Information

Schematic Reference

Antilock Brake System Schematics [1][2]Antilock Brakes / Traction Control Systems

Connector End View Reference

Component Connector End Views Sunshade - Left Front

Description and Operation

ABS Description and Operation Description and Operation

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

Scan Tool Reference

Control Module References Programming and Relearning for scan tool information

Circuit/System Testing

1. Ignition ON.

2. Verify that DTC C0186, C018B, C0196, C019B, C0287, or C0710 is not set.

• If any of the DTCs are set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.

• If none of the DTCs are set

3. Ignition OFF, allow the Q5 brake pressure modulator to cool down to ambient temperature, ignition ON.

4. Verify that DTC C0280 54 does not set while driving the vehicle under normal braking conditions.

• If the DTC sets

1. Replace the K17 electronic brake control module.

2. Verify the DTC does not set while driving the vehicle under normal braking conditions.

• If the DTC sets, replace the Q5 brake pressure modulator.

• If the DTC does not set

3. All OK.

• If the DTC does not set

5. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair.

* Brake Pressure Modulator Valve Replacement Brake Pressure Modulator Valve Replacement

* Control Module References Programming and Relearning for electronic brake control module replacement, programming and setup