Inspection Procedure

With CONSULT-II 

1. Turn ignition switch "ON". (Do not start engine.)
2. Select "SELF-DIAG RESULTS" mode for "ABS" with CONSULT-II.
3. Touch "ERASE".
4. Turn ignition switch "OFF" and wait at least 10 seconds.
5. Check the self-diagnostic results.

Is above displayed in the self-diagnosis display? 

YES: GO TO 2.

NO: INSPECTION END

Check air pressure, wear, and size.

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

YES: GO TO 3.

NO: Adjust air pressure, or replace tire.

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

OK or NG 

OK: GO TO 4.

NG: Repair sensor mount or replace sensor rotor. Refer to "SENSOR ROTOR "

1. Turn ignition switch "OFF".
2. Disconnect ABS actuator and electric unit (control unit) connector E24 and malfunctioning wheel sensor connector E20 (FR - LH) or E27 (FR - RH) or B202 (RR - LH), B203 (RR - RH). Check terminal to see if it is deformed, disconnected, loose, etc., and repair or replace it if any malfunction condition is found.
3. Reconnect connectors and check that interference with other parts has not cut wheel sensor cables, drive vehicle at a speed of 30 km/h (19 MPH) or above for at least 1 minute, and perform self-diagnosis.

OK or NG 

OK: GO TO 5.

NG: Connector terminal contact is loose, damaged, open or shorted.

1. Turn ignition switch OFF and disconnect wheel sensor connector E20 (FR - LH), E27 (FR - RH), B202 (RR - LH), B203 (RR -RH) and ABS actuator and electric unit (control unit) connector E24.
2. Check continuity between terminals. (Also check continuity when steering wheel is turned right and left and when sensor harness inside wheel well is moved.)
   Fig 1: Checking Wheel Sensor Harness Continuity

   Courtesy of NISSAN MOTOR CO., U.S.A.
   POWER SUPPLY SIGNAL GROUND CIRCUIT REFERENCE
   
   

   	Power supply circuit		Signal circuit		Ground circuit
   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	34	1	33	2	33, 34	16,47
   Front LH	45	1	46	2	45, 46
   Rear RH	43	1	42	2	43, 42
   Rear LH	36	1	37	2	36, 37

   Power supply circuit: Continuity should exist. 

   Signal circuit: Continuity should exist. 

   Ground circuit: Continuity should not exist. 

OK or NG 

OK: GO TO 6.

NG: Repair or replace harness and connector between ABS actuator and electric unit (control unit) and wheel sensor.

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.

Is above displayed on self-diagnosis display? 

YES: Wheel sensor has malfunction.

NO :

• 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".