Pinpoint Test

1. Ignition ON.
2. Using a scan tool, carry out the ABS module self-test.

Is DTC C0031:01; C0034:01; C0037:01 and/or C003A:01 present? 

1. Yes: For DTC C0031:01 or C0034:01, REFER to Diagnostic Routine AJ : Wheel Speed Sensor Electrical Fault DTCs - Front.

   For DTC C0037:01 or C003A:01, REFER to Diagnostic Routine AK : Wheel Speed Sensor Electrical Fault DTCs - Rear.

2. No: GO to 2  .

1. Verify that all tires and wheels are the same size and that the tire size and inflation pressures are correct as indicated on the VC label.

Are the wheels and tires OK? 

1. Yes: GO to 3  .
2. No: INSTALL the correct size tire or ADJUST tire pressure as necessary.

1. Ignition OFF.
2. With the vehicle in NEUTRAL, position it on a hoist. REFER to JACKING AND LIFTING for lifting points.
NOTE: Examine the wheel speed sensor wire carefully with a good light source. Failure to verify damage in the wheel speed sensor wire can lead to unnecessary installation of a new component.
3. Inspect the wheel speed sensor and harness for abrasion, broken connector tabs or water intrusion.

Is the wheel speed sensor and harness OK? 

1. Yes: GO to 4  .
2. No: INSTALL a new wheel speed sensor. REFER to Wheel Speed Sensor - Front  or Wheel Speed Sensor - Rear .

1. Inspect the wheel speed sensor and fastener for looseness.

Are the wheel speed sensor and fastener tight? 

1. Yes: GO to 5  .
2. No: TIGHTEN the wheel speed sensor to specification. REFER to Torque Specifications .

1. Inspect the wheel bearings for abnormal wear or roughness and for deformation or contamination of the seal and magnetic strip.

Are the wheel bearing(s) OK? 

1. Yes: INSTALL a new wheel speed sensor. REFER to Wheel Speed Sensor - Front  or Wheel Speed Sensor - Rear .

   DRIVE the vehicle at a speed greater than 20 kmh (12.4 mph). CYCLE the ignition. CARRY OUT the ABS module self-test. If the original DTC returns, GO to 6  .

   If a different DTC returns, REFER to DTC Chart: Anti-Lock Brake System (ABS) Module .

2. No: INSTALL a new wheel bearing as necessary. For front wheel bearings, REFER to WHEEL BEARING AND WHEEL HUB .

   For rear wheel bearings, REFER to WHEEL BEARING AND WHEEL HUB - FRONT WHEEL DRIVE (FWD) or WHEEL KNUCKLE - ALL WHEEL DRIVE (AWD) .

1. Ignition ON.
2. Using a scan tool, monitor the PIDs  while an assistant drives the vehicle at a speed greater than 20 kmh (12.4 mph).
   • Left front wheel speed sensor (LF_WSPD)
   • Right front wheel speed sensor (RF_WSPD)
   • Left rear wheel speed sensor (LR_WSPD)
   • Right rear wheel speed sensor (RR_WSPD)

Are the wheel speed PIDs within 5 kmh (3.1 mph) of each other and the vehicle speed as indicated on the speedometer? 

1. Yes: GO to 7  .
2. No: CYCLE the ignition. CLEAR the ABS module DTCs  . CARRY OUT the ABS module self-test. If the original DTC returns, GO to 8  .

   If a different DTC returns, REFER to DTC Chart: Anti-Lock Brake System (ABS) Module .

1. Disconnect the suspect wheel speed sensor electrical connector.
2. Disconnect ABS Module electrical connector.
3. Inspect the connectors (including any in-line connectors) for:
   • corrosion
   • loose or spread terminals
   • loose or frayed wire connections at terminals

Were any concerns found? 

1. Yes: REPAIR as necessary.

   Refer to CONNECTOR REPAIR PROCEDURES for schematic and connector information.

2. No: The fault is not present and cannot be recreated at this time. Do not install any new ABS components at this time. Install ABS components only when directed to do so in the pinpoint test.

1. Ignition OFF.
2. Disconnect and inspect the ABS Module electrical connector.
3. Repair:
   • corrosion (install new connector or terminal - clean module pins)
   • damaged or bent pins - install new terminals/pins
   • pushed-out pins - install new pins as necessary
4. Connect the ABS Module electrical connector. Make sure it seats and latches correctly.
5. Operate the system and determine if the concern is still present.

Is the concern still present? 

1. Yes: CHECK OASIS  for any applicable TSBs  . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions.

   If no TSBs  address this concern and the vehicle is not equipped with adaptive cruise control, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module .

   If no TSBs  address this concern and the vehicle is equipped with adaptive cruise control, INSTALL a new ABS module and HCU. REFER to Hydraulic Control Unit (HCU) . Note ABS module and HCU are removed as an assembly.

2. No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.