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 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 antilock brake system, traction control or stability control operation is required the electronic brake control module turns the required solenoid valves ON. The electronic brake control module detects an over temperature condition with one or more of the solenoids due to an extended antilock brake system, traction control and the vehicle stability enhancement system event lasting more than 15 seconds.

Conditions for Running the DTC

Ignition ON

Conditions for Setting the DTC

Stability control is active for more than 15 seconds.

Action Taken When the DTC Sets

* The electronic brake control module disables the stability control for the duration of the ignition cycle.
* The traction control/stability control-active indicator turns ON.

Conditions for Clearing the DTC

The condition for setting the DTC is no longer present.

Diagnostic Aids

This DTC may set due to extended operation of 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 (D6I)
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 Control Module References for scan tool information

Circuit/System Testing

Note: Since most occurrences of this DTC are caused by excessive antilock brake system or traction control usage, review with the customer the conditions under which the DTC set.

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 hydraulic brake pressure modulator valve assembly 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 is set
Replace the K17 electronic brake control module.

• If the DTC is not set

5. All OK.

Repair Instructions

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

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