Circuit/System Testing

WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.

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 appropriate K17 Electronic Brake Control Module harness connector terminals listed below and ground:
- B5LF Wheel Speed Sensor - Left Front - terminal 34 and terminal 21
- B5LR Wheel Speed Sensor - Left Rear - terminal 33 and terminal 20
- B5RF Wheel Speed Sensor - Right Front - terminal 18 and terminal 31
- B5RR Wheel Speed Sensor - Right Rear - terminal 19 and terminal 32
- If 1 V or greater
  Repair the short to voltage on the circuit.
- 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 34 and terminal 21
- B5LR Wheel Speed Sensor - Left Rear - terminal 33 and terminal 20
- B5RF Wheel Speed Sensor - Right Front - terminal 18 and terminal 31
- B5RR Wheel Speed Sensor - Right Rear - terminal 19 and terminal 32
- If less than infinite resistance
  Repair the short to ground on the circuit.
- 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 34
- B5LR Wheel Speed Sensor - Left Rear - terminal 33
- B5RF Wheel Speed Sensor - Right Front - terminal 18
- B5RR Wheel Speed Sensor - Right Rear - terminal 19
- If 2 Ω or greater
  Repair the open/high resistance in the circuit.
- 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 21
- B5LR Wheel Speed Sensor - Left Rear - terminal 20
- B5RF Wheel Speed Sensor - Right Front - terminal 31
- B5RR Wheel Speed Sensor - Right Rear - terminal 32
- If 2 Ω or greater
  Repair the open/high resistance in the circuit.
- If less than 2 Ω
Replace the B5 Wheel Speed Sensor.
Verify the DTC does not set while operating the vehicle within the Conditions for Running the DTC.
- If the DTC sets
  Replace the K17 Electronic Brake Control Module.
- If the DTC does not set
All OK.