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 00

-
Stability System Active Too Long

Circuit/System Description

The yaw/lateral accelerometer sensor monitors the motion of the vehicle for the EBCM to maintain control and stabilize the vehicle during most driving conditions.

Conditions for Running the DTC

Engine Running

Conditions for Setting the DTC

The yaw/lateral accelerometer sensor indicates the vehicle motion needs the vehicle stability enhancement system (VSES) activated, and the EBCM detects either the brakes are not applied for at least 15 seconds, or the brakes are applied for at least 45 seconds during this VSES event.

Action Taken When the DTC Sets

* The EBCM disables the VSES for the duration of the ignition cycle.

* A driver information center message and/or a warning indicator may be displayed.

Conditions for Clearing the DTC

* The condition for the DTC is no longer present.

* The EBCM clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Diagnostic Aids

DTC can set because of extended operation of ABS, 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 1-2 Shift Solenoid (SS) Valve (MN5)

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 Verification

1. Verify that the DTC sets outside of the Conditions for Running and Setting. Since most occurrences of this DTC are caused by excessive driving maneuvers, review with the customer the conditions under which the DTC set.

• If the DTC set within the Conditions for Running and Setting, the VSES is operating as designed.

2. Operate the vehicle within the conditions that the customer experienced and verify the DTC does not reset.

• If the DTC resets, replace the yaw/lateral accelerometer sensor and verify the DTC does not reset. If the DTC resets, replace the EBCM.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

* Vehicle Yaw Sensor Replacement Service and Repair

* Control Module References Programming and Relearning for EBCM replacement, programming and setup