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 Descriptor
DTC C0245 00: Wheel Speed Sensor Frequency ErrorCircuit/System Description
As the wheel spins, the wheel speed sensor produces an 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 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
| • | The ABS, traction control system (TCS) and vehicle stability enhancement system (VSES) are inhibited. |
| • | The ABS indicator illuminates. |
Conditions for Clearing the MIL/DTC
The condition for the DTC is no longer present.
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
Connector End View Reference
Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Inspect for one tire that has improper air pressure or improper size.
