C0245

DTC C0245

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.



DTC Descriptor
DTC C0245 5A
- Wheel Speed Sensor Plausibility Failure




Circuit/System Description

The wheel speed sensor receives ignition voltage from the electronic brake control module (EBCM) and provides a DC square wave signal back to the module. As the wheel spins, the EBCM uses the frequency of the square wave signal to calculate the wheel speed.


Conditions for Running the DTC

* The ignition is ON.
* Ignition voltage is greater than 8 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

* Antilock Brake System (ABS), Traction Control System (TCS) and Vehicle Stability Enhancement System (VSES) are inhibited.
* The ABS indicator turns ON.



Conditions for Clearing the MIL/DTC

* The condition for the DTC is no longer present.
* The condition for the DTC is no longer present and the DTC is cleared with a scan tool.



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 ([1][2]Antilock Brakes / Traction Control Systems)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

ABS Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)



Scan Tool Reference

Control Module References (Programming and Relearning)


Circuit/System Verification

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


Repair Instructions

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