Diagnostic Procedure

WARNING: This page is about a different car, the 2003 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

CHECK 4WD SOLENOID VALVE

Fig 1: Checking 4WD Solenoid Valve
Courtesy of NISSAN MOTOR CO., U.S.A.

Refer to "4WD SOLENOID VALVE, CLUTCH PRESSURE SWITCH AND LINE PRESSURE SWITCH ", "COMPONENT INSPECTION".

OK or NG
1. OK: GO TO 2.
2. NG: Check the following. If OK, repair or replace 4WD solenoid valve.
  - Continuity of transfer sub-harness
    Refer to "TRANSFER TERMINAL CORD ASSEMBLY SUB-HARNESS CONNECTOR ", "COMPONENT INSPECTION".
3. CHECK POWER SOURCE CIRCUIT
  1. Turn ignition switch to "OFF" position.
  2. Disconnect transfer control unit harness connector.
  3. Check resistance between transfer terminal cord assembly sub-harness connector terminal 6 and transfer control unit harness connector terminal 10.
    Resistance: 11.2 - 12.8Ω
    
    Fig 2: Checking Continuity Between Terminal Cord Assembly And Transfer Control Unit Harness Connector Terminal (6 And 10)
    Courtesy of NISSAN MOTOR CO., U.S.A.
  OK or NG
  1. OK: GO TO 3.
  2. NG: Check the following.
    - Transfer dropping resistor
      Refer to "TRANSFER DROPPING RESISTOR ", "COMPONENT INSPECTION".
    - Continuity between transfer terminal cord assembly sub-harness connector terminal 6 and transfer control unit harness connector terminal 10.
4. CHECK POWER SOURCE CIRCUIT
  1. Turn ignition switch to "OFF" position.
  2. Check continuity between transfer terminal cord assembly sub-harness connector terminal 6 and transfer control unit harness connector terminal 19.
    Continuity should exist.
    
    Fig 3: Checking Continuity Between Terminal Cord Assembly And Transfer Control Unit Harness Connector Terminal (19 And 6)
    Courtesy of NISSAN MOTOR CO., U.S.A.
  OK or NG
  1. OK: GO TO 4.
  2. NG: Repair or replace harness between transfer terminal cord assembly sub-harness connector terminal 6 and transfer control unit harness connector terminal 19.
5. PERFORM SELF-DIAGNOSIS
  After driving for a while, perform self-diagnosis.
  
  Refer to "TROUBLE DIAGNOSIS WITHOUT CONSULT-II " and "TROUBLE DIAGNOSIS WITH CONSULT-II ".
  
  OK or NG
  1. OK: INSPECTION END
  2. NG:
    1. Perform transfer control unit input/output signal inspection. Refer to "TRANSFER CONTROL UNIT INSPECTION TABLE ".
    2. If NG, recheck transfer control unit pin terminals for damage or loose connection with harness connector.