Inspection Procedure

Check self-diagnosis results.

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

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

Check air pressure, wear, and size.

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

1. YES : GO TO 3.
2. NO : Adjust air pressure, or replace tire.

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

  OK or NG 

  1. OK : GO TO 4.
  2. NG : Repair wheel sensor mount or replace the sensor rotor.

1. Disconnect ABS control unit connector and the malfunctioning wheel sensor connector E42 (FR - LH) or E27 (FR - RH) or T5 (RR - RH, LH). Check the terminal to see if it is deformed, disconnected, loose, etc., and replace it if any non-standard condition is found.
2. Reconnect connector, drive at a speed of approximately 30 km/h (19 MPH) or more for approximately 1 minute, and then perform self-diagnosis.

   Is the result of self-diagnosis normal? 

   1. YES : The connector terminal contact is loose, damaged, open or shorted.
   2. NO : GO TO 5.

1. Turn ignition switch OFF and disconnect the wheel sensor connector E42 (FR - LH) or E27 (FR - RH) or T5 (RR - RH, LH) and ABS control unit (control unit) connector E51.
2. Check continuity between terminals. (Also check the continuity when the steering wheel is turned right and left and when the sensor harness inside the wheel well is moved.)
   Fig 1: Checking Continuity Between Terminals

   Courtesy of NISSAN MOTOR CO., U.S.A.
   SIGNAL SYSTEM CHART
   
   

   	Power system		Signal system		Ground system
   Wheel	ABS actuator and electric unit (control unit)	Wheel sensor	ABS actuator and electric unit (control unit)	Wheel sensor	ABS actuator and electric unit (control unit) (signal)	ABS actuator and electric unit (control unit) (ground)
   Front RH	24	1	9	2	24, 9	16, 30
   Front LH	22	1	7	2	22, 7
   Rear RH	28	1	13	2	28, 13
   Rear LH	26	3	11	4	26, 11

   Power system : Continuity should exist  .

   Signal system : Continuity should exist  .

   Ground system : Continuity should not exist  .

   OK or NG 

   1. OK : GO TO 6.
   2. NG : Repair or replace harness and connector that have malfunction.

1. Replace wheel sensor that resulted in malfunction by self-diagnosis.
2. Reconnect connectors, drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute, and then perform self-diagnosis.
   SELF DIAGNOSIS CHART
   
   

   Self-diagnosis results
   FR RH SENSOR -1, -2
   FR LH SENSOR -1, -2
   RR RH SENSOR -1, -2
   RR LH SENSOR -1, -2

   Is above displayed on self-diagnosis display? 

   1. OK : Wheel sensor has malfunction.
   2. NG :
      • Replace ABS actuator and electric unit (control unit).
      • Perform to self-diagnosis again, and make sure that the result shows "NO DTC IS DETECTED. FURTHER TESTING MAY BE REQUIRED".