For 1990-2009 cars only
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 Descriptors
DTC C0249: Left Normal Force ErrorDTC CO250: Right Normal Force Error
Circuit/System Description
The electronic brake control module (EBCM) receives invalid information from other modules through the GMLAN serial data bus. The EBCM will set DTC based on this information.
Conditions for Running the DTC
| • | The ignition is ON. |
| • | Ignition voltage is greater than 8 volts. |
Conditions for Setting the DTC
The EBCM receives invalid information from other modules.
Action Taken When the DTC Sets
| • | The EBCM operates normal. |
| • | The antilock brake system (ABS), traction control off, and brake indicator lights remain OFF. |
Conditions for Clearing the DTC
| • | The condition for the DTC is no longer present and the DTC is cleared with a scan tool. |
| • | The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles. |
Diagnostic Aids
This DTC is for information only. As an aid to the technician, this DTC indicates that there are no problems in the ABS.
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
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
