Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC C0280 00: Stability System Active Too LongCircuit/System Description
The yaw rate and 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 rate and 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
One or more of the following actions may occur:
| • | The EBCM disables VSES. |
| • | The driver information center (DIC) illuminates the warning indicator/message. |
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. |
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- 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.
- Operate the vehicle within the conditions that the customer experienced and verify the DTC does not reset.
| ⇒ | If the DTC set within the Conditions for Running and Setting, the VSES is operating as designed. |
| ⇒ | If the DTC resets, replace the yaw rate sensor and lateral accelerometer. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Vehicle Yaw Sensor with Vehicle Lateral and Longitudinal Accelerometer Replacement
