Diagnostic Procedure

With CONSULT-II 

1. Start engine.
2. Select "DATA MONITOR" mode for "ALL MODE AWD/4WD" with CONSULT-II.
3. Read out ON/OFF switching action of the "CL PRES SW" while operating 4WD shift switch.
   Fig 1: Checking Clutch Pressure Switch Signal

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 2: Identifying "CL PRES SW"

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

Without CONSULT-II 

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

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 4: Checking Voltage Between Transfer Control Unit Harness Connector Terminals 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 terminal cord assembly harness connector.
3. Check continuity between transfer control unit harness connector E143 terminal 34 (BR) and transfer terminal cord assembly harness connector F56 terminal 7 (BR)
   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 E143 Terminal 34 And Transfer Terminal Cord Assembly Harness Connector F56 Terminal 7

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

Check transfer control unit input/output signal. Refer to "TRANSFER CONTROL UNIT TERMINALS AND REFERENCE VALUE ".

OK or NG 

1. OK: GO TO 4.
2. NG: Check transfer control unit pin terminals for damage or loose connection with the harness connector. If any items are damaged, repair or replace damaged parts.

1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Remove clutch pressure switch. Refer to "LOCATION OF ELECTRICAL PARTS ".
3. Push and release clutch pressure switch and check continuity between transfer terminal cord assembly terminal 7 and ground.
   Fig 6: Transfer Terminal Cord Assembly Terminal 7 And Ground Continuity Specifications

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 7: Checking Continuity Between Transfer Terminal Cord Assembly Terminal 7 And Ground

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

OK or NG 

1. OK: GO TO 5.
2. NG: Replace clutch pressure switch. Refer to "LOCATION OF ELECTRICAL PARTS ".

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

OK or NG 

1. OK: GO TO 6.
2. NG: Replace transfer control unit. Refer to "REMOVAL AND INSTALLATION ".

Perform cruise test. Refer to "CRUISE TEST ".

OK or NG 

1. OK: Inspection End.
2. NG: Perform the applicable trouble diagnosis.