Diagnostic Procedure

Wheel sensor inspection

Fig 1: Wheel Sensor Circuit

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

GO TO 2.

1. Disconnect connectors from ABS actuator and electric unit (control unit) connector E162 and wheel sensor connector E164, E163, B72 and B73 of malfunction code No. Check terminals for damage or loose connections. Then reconnect connectors.
2. Carry out self diagnosis again.

Does warning lamp activate again? 

Yes: GO TO 3.

No: Inspection End 

1. Disconnect ABS actuator and electric unit (control unit) connector E162.
2. Check resistance between ABS actuator and electric unit (control unit) harness connector E162 terminals.
   Fig 2: Checking Wheel Sensor Circuit Continuity

   Courtesy of NISSAN MOTOR CO., U.S.A.
   1. Front RH wheel
   2. Terminals 4 (B/W) and 5 (L/OR)
   3. Front LH wheel
   4. Terminals 65 (G) and 7 (R/B)
   5. Rear RH wheel
   6. Terminals 1 (B) and 3 (W)
   7. Rear LH wheel
   8. Terminals 8 (R/W) and 9 (L/W)
   1. Resistance: 0.8 - 1.85 kohm 
   1. Is resistance: 0.8 - 1.85 kohm? 

   Yes: GO TO  5 .

   No: GO TO 4.

Check resistance of each sensor.

Fig 3: Checking Wheel Sensor Resistance

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

1. Resistance: 0.8 - 1.85 kohm 

Is resistance 0.8 - 1.85 kohm? 

Yes: Repair harness and connectors between ABS actuator and electric unit (control unit) connector E162 and wheel sensor connector.

No: Replace wheel sensor.

Check for inflation pressure, wear and size of each tire.

1. Air tire pressure and size correct and is tire wear within specifications? 

Yes: GO TO 6.

No: Adjust tire pressure or replace tire(s).

Check wheel bearing axial end play.

Check clearance between sensor and rotor.

Fig 4: Checking Sensor & Rotor Clearance

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

1. Clearance: Front 0.273 - 0.925 mm (0.0107 - 0.0364 in) Rear 0.387 - 0.992 mm (0.0152 - 0.0391 in) 

Is axial end play and clearance within specifications? 

Yes: GO TO 7.

No: Clean sensor fixing portion, or replace sensor.

Check sensor rotor for teeth damage.

1. Is sensor rotor free from damage? 

Yes: Check ABS actuator and electric unit (control unit) connector E162 pin terminals for damage or the connection of ABS actuator and electric unit (control unit) harness connector E162. Reconnect ABS actuator and electric unit (control unit) harness connector E162. Then retest.

No: Replace sensor rotor.

1. Disconnect wheel sensor connectors E164, E163, B72 and B73.
2. Check voltage between body side terminal of wheel sensor harness connectors E164, E163, B72 and B73 and body ground.

Fig 5: Checking Wheel Sensor Connector Voltage

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

Is voltage more than 8V? 

Yes: Replace wheel sensor.

No: Replace ABS actuator and electric unit (control unit).