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Home >> Nissan-Datsun >> 2006 >> Armada LE, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Transfer Case >> Trouble Diagnosis For System >> Wait Detection Switch >> Diagnostic Procedure

Diagnostic Procedure

  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 DETCT SW".
    DISPLAY VALUE CONDITION

    Condition Display value
    • Vehicle stopped
    • Engine running
    • A/T selector lever "N" position
    • Brake pedal depressed
    		 4WD shift switch: 2WD, AUTO or 4H OFF
    4WD shift switch: 4H to 4LO (While actuator motor is operating.) OFF --> ON
    4WD shift switch: 4LO to 4H (While actuator motor is operating.) ON --> OFF
    4WD shift switch: 4LO ON
    Fig 1: CONSULT-II Display - DATA MONITOR
    G04210901Courtesy 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.
    TERMINAL VOLTAGE REFERENCE

    Connector Terminal Condition Voltage (Approx.)
    E143 43-Ground
    • Vehicle stopped
    • Engine running
    • A/T selector lever "N" position
    • Brake pedal depressed
    		 4WD shift switch: 2WD, AUTO or 4H Battery voltage
    4WD shift switch: 4H to 4LO (While actuator motor is operating.) Battery voltage --> 0V
    4WD shift switch: 4LO to 4H (While actuator motor is operating.) 0V --> Battery voltage
    4WD shift switch: 4LO 0V
    Fig 2: Checking Voltage Between Transfer Control Unit Harness Connector Terminal And Ground
    G04210902Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO  5.

    NG: GO TO 2.

  2. CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND WAIT DETECTION SWITCH 
    1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
    2. Disconnect transfer control unit harness connector and the wait detection switch harness connector.
    3. Check continuity between transfer control unit harness connector E143 terminal 43 and wait detection switch harness connector F59 terminal 10.

      Continuity should exist  .

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

    OK or NG 

    OK: GO TO 3.

    NG: Repair or replace damaged parts.

    Fig 3: Checking Continuity Between Transfer Control Unit Terminal 43 And Wait Detection Switch Terminal 10
    G04210903Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK GROUND CIRCUIT 
    1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
    2. Disconnect wait detection switch harness connector.
    3. Check continuity between wait detection switch harness connector F59 terminal 11 and ground.

      Continuity should exist  .

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

    OK or NG 

    OK: GO TO 4.

    NG: Repair open circuit or short to ground or short to power in harness or connectors.

    Fig 4: Checking Continuity Between Wait Detection Switch Harness Connector F59 Terminal 11 And Ground
    G04210904Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK WAIT DETECTION SWITCH 
    1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
    2. Disconnect wait detection switch harness connector.
    3. Remove wait detection switch. Refer to "LOCATION OF ELECTRICAL PARTS ".
    4. Push and release wait detection switch and check continuity between wait detection switch terminals 10 and 11.
    TERMINAL CONTINUITY REFERENCE

    Terminal Condition Continuity
    10 - 11 Push wait detection switch Yes
    Release wait detection switch No

    OK or NG 

    OK: GO TO 5.

    NG: Replace wait detection switch. Refer to "LOCATION OF ELECTRICAL PARTS ".

    Fig 5: Checking Continuity Between Wait Detection Switch Terminals 10 And 11
    G04210905Courtesy of NISSAN MOTOR CO., U.S.A.
  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 

    OK: GO TO 6.

    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 

    OK: Inspection End.

    NG: Replace transfer control unit. Refer to "REMOVAL AND INSTALLATION ".

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