Diagnostic Procedure

With CONSULT-II 

1. Start engine.
2. Select "DATA MONITOR" mode for "ALL MODE AWD/4WD" with CONSULT-II.
3. Read out the value of "SHIFT POS SW1" and "SHIFT POS SW2".
   Fig 1: Checking Actuator Position Switch Signal

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 2: Identifying "SHIFT POS SW1" And "SHIFT POS SW2"

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

Without CONSULT-II 

1. Start engine.
2. Check voltage between transfer control unit harness connector terminal and ground.
   Fig 3: Transfer Control Unit Harness Connector Terminals And Ground Voltage Specifications

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 4: Checking Voltage Between Transfer Control Unit Harness Connector Terminal And Ground

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

OK or NG 

1. OK: GO TO 5.
2. NG: GO TO 2.

1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and the transfer control device (actuator position switch) harness connector.
3. Check continuity between the following terminals.
   • Transfer control unit harness connector E143 terminal 27 (W/L) and transfer control device (actuator position switch) harness connector F58 terminal 23 (W/L).
   • Transfer control unit harness connector E143 terminal 44 (LG/B) and transfer control device (actuator position switch) harness connector F58 terminal 20 (LG/B).
   1. Continuity should exist. 

   Also check harness for short to ground and short to power.

OK or NG 

1. OK: GO TO 3.
2. NG: Repair or replace damaged parts.

Fig 5: Checking Continuity Between Transfer Control Unit Harness Connector Terminals And Transfer Control Device (Actuator Position Switch) Harness Connector Terminals

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

1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Disconnect transfer control device (actuator position switch) harness connector.
3. Check continuity between transfer control device (actuator position switch) harness connector F58 terminal 22 (B) and ground.
   1. Continuity should exist. 

   Also check harness for short to ground and short to power.

OK or NG 

1. OK: GO TO 4.
2. NG: Repair open circuit or short to ground or short to power in harness or connectors.

Fig 6: Checking Continuity Between Transfer Control Device (Actuator Position Switch) Harness Connector F58 Terminal 22 And Ground

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

1. Remove transfer control device. Refer to "REMOVAL AND INSTALLATION ".
2. Check operation by applying battery voltage to transfer control device (actuator motor) terminals 21 and 24.
   CAUTION:

   • Do not operate actuator motor for more than 1 second.
   • Change the actuator motor position to "HIGH" when installing.
   • Be careful not to overheat the harness.
   Fig 7: Transfer Control Device Terminals 21 And 24 Voltage Specifications

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 8: Applying Battery Voltage To Transfer Control Device (Actuator Motor) Terminals 21 And 24

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

OK or NG 

1. YES: GO TO 5.
2. NO: Replace transfer control device (actuator motor). Refer to "REMOVAL AND INSTALLATION ".

Check transfer control unit input/output signal. Refer to "TRANSFER CONTROL UNIT INPUT/OUTPUT SIGNAL REFERENCE VALUES ".

OK or NG 

1. OK: GO TO 6.
2. NG: Check transfer control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.

Perform the self-diagnosis, after driving a vehicle for a while.

OK or NG 

1. OK: Inspection End.
2. NG: Replace transfer control device. Refer to "REMOVAL AND INSTALLATION ".