C0245

DTC C0245

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 C0245 5A
- Wheel Speed Sensor Plausibility Failure

Circuit/System Description

As the wheel spins, the wheel speed sensor (WSS) produces an alternating current (AC) signal. The electronic brake control module (EBCM) uses the frequency of the AC signal to calculate the wheel speed.

Conditions for Running the DTC

* Ignition ON.
* Ignition voltage is greater than 10 volts.
* Vehicle must be moving at a speed less than 14.5 km/h (9 mph).
* No wheel speed sensor faults exist.
* Brake is not applied.
* Vehicle is not cornering.
* No wheel spinning is detected.

Conditions for Setting the DTC

Wheel speed differences between one wheel and the others is greater than 25 percent.

Action Taken When the DTC Sets

* The EBCM inhibits Antilock brake system (ABS), traction control system (TCS) and vehicle stability enhancement system (VSES).
* A DIC 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 40 consecutive drive cycles.

Diagnostic Aids

* Faulty wheel speed sensor will not set this DTC.
* A vehicle using a space saver spare will not set this code.

Reference Information
Schematic Reference

Antilock Brake System Schematics (JL7) (Antilock Brake System Schematics (JL7))Antilock Brake System Schematics (Except JL7) (Antilock Brake System Schematics (Except JL7))
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

ABS Description and Operation (With JL7) (ABS (With JL7))ABS Description and Operation (Without JL7) (ABS (Without JL7))
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

Inspect for one tire that has improper air pressure or improper size.