Inspection Procedure

Check air pressure, wear and size.

Are air pressure, wear, and size within the standard values?

1. YES: GO TO  2.
2. NO: Adjust air pressure, or replace tire.

• Check the condition of the sensor mount (for looseness, etc.).
• Check the surface of front sensor rotor rubber for damage.
• Check rear sensor rotor for damage.

OK or NG 

1. OK: GO TO  3.
2. NG: Repair sensor mount or replace sensor rotor.

Check the self-diagnostic results.

1. FR RH SENSOR-1,-2
2. FR LH SENSOR- 1,-2
3. RR RH SENSOR-1,-2
4. RR LH SENSOR-1,-2

Is the above displayed in the self-diagnosis display items?

1. YES: GO TO  4.
2. NO: INSPECTION END.

1. Disconnect ABS actuator and electric unit (control unit) connector and malfunctioning wheel sensor connector E46 (FR-LH), E33 (FR-RH) or B69 (RR). Check terminal for deformation, open circuit, poor contact, etc., and repair or replace if any malfunctioning condition is found.
2. Reconnect connectors, drive at a speed of approximately 30 km/h (19 MPH) or more for approximately 1 minute, and perform self-diagnosis.

OK or NG 

1. OK: Connector terminal contact is loose, damaged, open or shorted.
2. NG: GO TO  5.

1. Turn ignition switch OFF and disconnect malfunctioning wheel sensor connector E46 (FR-LH), E33 (FR-RH) or B69 (RR) and ABS actuator and electric unit (control unit) connector.
2. Check continuity between terminals. (Also check the continuity when steering wheel is turned right and left and when sensor harness inside wheel well is moved.)
   Fig 1: Checking Wheel Speed Sensor Circuit Continuity

   Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Identifying Wheel Speed Sensor Circuit Connectors & Terminals

Courtesy of NISSAN MOTOR CO., U.S.A.

1. Power system: Continuity should exist.
2. Signal system: Continuity should exist.
3. Ground system: Continuity should not exist.

OK or NG 

1. OK: GO TO  6.
2. NG: Repair harness and connector between ABS actuator and electric unit (control unit) and wheel sensor.

1. Connect malfunctioning wheel sensor connector E46 (FR-LH), E33 (FR-RH) or B69 (RR) and ABS actuator and electric unit (control unit) connector.
2. Turn ignition switch ON and check voltage between malfunctioning wheel sensor harness connector power terminal and ground.
   Fig 3: Checking Wheel Sensor Power Supply Circuit

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 4: Specifying Wheel Sensor Power Supply Harness Connectors & Voltages

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

1. OK: Replace wheel sensor.
2. NG: Replace ABS actuator and electric unit (control unit).