Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

1. CONNECTOR INSPECTION 
   1. Turn ignition switch OFF.
   2. Disconnect ABS actuator and electric unit (control unit) connector.
   3. Check terminal for deformation, disconnect, looseness, and so on. If any malfunction is found, repair or replace terminal.
   4. Reconnect connectors and then perform the self-diagnosis. Refer to "CONSULT FUNCTION (ABS) ".

      Is any item indicated on the self-diagnosis display? 

      YES: GO TO 2

      NO: Poor connection of connector terminal. Repair or replace connector.

2. CHECK ABS MOTOR AND MOTOR RELAY POWER SUPPLY CIRCUIT 
   1. Turn ignition switch OFF.
   2. Disconnect ABS actuator and electric unit (control unit) connector.
   3. Check voltage between the ABS actuator and electric unit (control unit) connector E125 terminal 1 and ground.

      ABS actuator and electric unit (control unit)		-	Voltage
      Connector	Terminal
      E125	1	Ground	Battery voltage

      Fig 1: Checking ABS Motor & Motor Relay Power Supply Circuit Voltage

      Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: GO TO 3

      NO: Repair or replace malfunctioning components.

3. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT 

   Check continuity between ABS actuator and electric unit (control unit) connector E125 terminals 16, 47 and ground.

   ABS actuator and electric unit (control unit)		-	Continuity
   Connector	Terminal
   E125	16, 47	Ground	Yes

   Fig 2: Checking Ground Circuit Continuity

   Courtesy of NISSAN NORTH AMERICA, INC.

   Is the inspection result normal? 

   YES: Replace ABS actuator and electric unit (control unit). Refer to "REMOVAL AND INSTALLATION ".

   NO: Repair or replace malfunctioning components.