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Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK WAIT DETECTION SWITCH SIGNAL (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 "WAIT DETECT SWITCH".
    Fig 1: Test Conditions
    G00728778Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 2: CONSULT-II Display
    G00728779Courtesy 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: Test Conditions
    G00728780Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 4: Checking Voltage
    G00728781Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO 5.
    2. NG: GO TO 2.
  2. CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND WAIT DETECTION SWITCH 
    1. Turn ignition switch "OFF".
    2. Disconnect transfer control unit harness connector and the wait detection switch harness connector.
    3. Check continuity between transfer control unit harness connector E142 terminal 17 (G/Y) and wait detection switch harness connector F59 terminal 10 (G/Y).

    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
    G00728782Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK GROUND CIRCUIT 
    1. Turn ignition switch "OFF".
    2. Disconnect wait detection switch harness connector.
    3. Check continuity between wait detection switch harness connector F59 terminal 11 (B) and ground.

    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
    G00728783Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK WAIT DETECTION SWITCH 
    1. Turn ignition switch "OFF".
    2. Disconnect wait detection switch harness connector.
    3. Remove wait detection switch.
    4. Push and release wait detection switch and check continuity between wait detection switch harness connector F59 terminals 10 and 11.
    Fig 7: Continuity Chart
    G00728784Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 8: Checking Continuity
    G00728785Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO 5.
    2. NG: Replace wait detection switch.
  5. CHECK TRANSFER CONTROL UNIT 

    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.
  6. CHECK DTC 

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

    OK or NG 

    1. OK: INSPECTION END 
    2. NG: Replace transfer control unit. Refer to TRANSFER CONTROL UNIT .
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