Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Circuit/System Testing
- Inspect the appropriate B5 Wheel Speed Sensor and encoder ring for contamination, metallic particles, physical damage, incorrect installation and the correct component.
- If contamination, physical damage, incorrect installation, or the wrong component is diagnosed
Repair or replace the applicable component.
- Go to next step: If no contamination, physical damage, incorrect installation, or the wrong component is not diagnosed
- If contamination, physical damage, incorrect installation, or the wrong component is diagnosed
- Ignition OFF and all vehicle systems OFF, disconnect the harness connectors at the appropriate B5 Wheel Speed Sensor and the harness connector at the K17 Electronic Brake Control Module, ignition ON.
- Test for less than 1 V between the K17 Electronic Brake Control Module harness connector terminals listed below and ground:
- B5LF Wheel Speed Sensor - Left Front - terminal 8 and terminal 19
- B5LR Wheel Speed Sensor - Left Rear - terminal 18 and terminal 31
- B5RF Wheel Speed Sensor - Right Front - terminal 4 and terminal 16
- B5RR Wheel Speed Sensor - Right Rear - terminal 29 and terminal 17
- If 1 V or greater
Repair the short to voltage on the circuit.
- Go to next step: If less than 1 V
- Ignition OFF.
- Test for infinite resistance between the K17 Electronic Brake Control Module harness connector terminals listed below and ground:
- B5LF Wheel Speed Sensor - Left Front - terminal 8 and terminal 19
- B5LR Wheel Speed Sensor - Left Rear - terminal 18 and terminal 31
- B5RF Wheel Speed Sensor - Right Front - terminal 4 and terminal 16
- B5RR Wheel Speed Sensor - Right Rear - terminal 29 and terminal 17
- If less than infinite resistance
Repair the short to ground on the circuit.
- Go to next step: If infinite resistance
- Test for less than 2 Ω between the B5 Wheel Speed Sensor harness connector terminal 1 and the K17 Electronic Brake Control Module harness connector terminal listed below:
- B5LF Wheel Speed Sensor - Left Front - terminal 19
- B5LR Wheel Speed Sensor - Left Rear - terminal 31
- B5RF Wheel Speed Sensor - Right Front - terminal 16
- B5RR Wheel Speed Sensor - Right Rear - terminal 17
- If 2 Ω or greater
Repair the open/high resistance in the circuit.
- Go to next step: If less than 2 Ω
- Test for less than 2 Ω between the B5 Wheel Speed Sensor harness connector terminal 2 and the K17 Electronic Brake Control Module harness connector terminal listed below:
- B5LF Wheel Speed Sensor - Left Front - terminal 8
- B5LR Wheel Speed Sensor - Left Rear - terminal 18
- B5RF Wheel Speed Sensor - Right Front - terminal 4
- B5RR Wheel Speed Sensor - Right Rear - terminal 29
- If 2 Ω or greater
Repair the open/high resistance in the circuit.
- Go to next step: If less than 2 Ω
- Replace the B5 Wheel Speed Sensor.
- Verify the DTC does not set while operating the vehicle within Conditions for Running the DTC.
- If the DTC sets
Replace the K17 Electronic Brake Control Module.
- Go to next step: If the DTC does not set
- If the DTC sets
- All OK.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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