For 1990-2009 cars

### Circuit Description

The electronic brake control module (EBCM) receives invalid information from other modules through serial data bus. The EBCM will set the DTC according to this information.

### DTC Descriptors

This diagnostic procedure supports the following DTCs:

• | DTC C0249 Left Normal Force Error

• | DTC CO250 Right Normal Force Error

This vehicle has DTCs which include DTC Symptoms. For more information on DTC Symptoms, refer to DTC Symptom Description .

DTC Symptom | DTC Symptom Descriptor
--- | ---
71 | The received serial data is invalid

### 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 System (TCS), and Brake indicator 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/TCS System.

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Antilock Brake System Schematics
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Diagnostic System Check - Vehicle