DTC C003F or C2A01-C2A04

Diagnostic Instructions Perform the Diagnostic System Check prior to using this diagnostic procedure: Diagnostic System Check - Vehicle Review the description of Strategy Based Diagnosis: Strategy Based Diagnosis An overview of each diagnostic category can be found here: Diagnostic Procedure Instructions DTC Descriptor DTC C003F Wheel Speed Sensors Direction Correlation DTC C2A01 Left Front Wheel Speed Sensor Direction DTC C2A02 Right Front Wheel Speed Sensor Direction DTC C2A03 Left Rear Wheel Speed Sensor Direction DTC C2A04 Right Rear Wheel Speed Sensor Direction Symptom Byte Information: Symptom Byte List Circuit/System Description For an overview of the component/system, refer to: ABS Description and Operation

Component	Description
B5 Wheel Speed Sensor	The sensor contains a hall-effect sensor and additional electronics that processes the signal. It detects the change of strength of the magnetic field caused by the reluctor ring. When the strength changes, the sensor changes the amount of current it consumes. This results in a square wave signal of current and voltage. The control module detects the frequency in which the signal changes, which is proportional to the rotational speed.
K160 Brake System Control Module	The control module K160 uses the input signal from the sensor B5 to determine the wheel speed.

Conditions for Running the DTC Ignition On The vehicle speed is greater than 15 km/h (10 MPH). Conditions for Setting the DTC Wheel Speed Sensor = Erratic Incorrect installation of a component: B5 Wheel Speed Sensor Electromagnetic Interference Actions Taken When the DTC Sets No additional actions taken Conditions for Clearing the DTC The conditions for setting the DTC no longer exist. A history DTC will clear after 40 consecutive malfunction-free ignition cycles. Diagnostic Aids Inspect the component for wear or damage: B5 Wheel Speed Sensor . Do NOT use a magnet to clean the component: Encoder Ring . Inspect the following components: B5 Wheel Speed Sensor = Correct part . Reference Information Schematic Reference Antilock Brake System Schematics Connector End View Reference Master Electrical Component List Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References Circuit/System Testing

1. Inspect the following components: B5 Wheel Speed Sensor ≠ Correct part B5 Wheel Speed Sensor = Visible Damage ⇒ If a condition exists Replace the component: B5 Wheel Speed Sensor ⇓ If no conditions exist
2. Clean and inspect the hub assembly. Refer to Wheel Speed Sensor Reluctor Ring Cleaning and Inspection Repair Instructions Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification Front Wheel Speed Sensor Replacement - Left Side Front Wheel Speed Sensor Replacement - Right Side Rear Wheel Speed Sensor Replacement - Left Side Rear Wheel Speed Sensor Replacement - Right Side For control module replacement, programming, and setup refer to: Control Module References