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AWD Lock Switch Signal Circuit

WARNING: This page is about a different car, the 2003 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CAN COMMUNICATION LINE 

    Perform the self-diagnosis. Is a malfunction in the CAN communication indication in the results?

    YES or NO 

    1. YES: Check the CAN communication line. Refer to CAN COMMUNICATION SYSTEM .
    2. NO: GO TO 2.

  2. CHECK AWD LOCK SWITCH SIGNAL 

    WITH CONSULT-II 

    1. Turn ignition switch ON.
    2. Select ECU INPUT SIGNALS or MAIN SIGNALS in DATA MONITOR mode for ALL MODE 4WD with CONSULT-II.
      3. Fig 1: CONSULT-II Main Signals Display
      G01200043Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Is it the same as 4WD MODE SW indication when operating switch?

    YES or NO 

    1. YES: INSPECTION END 
    2. NO: GO TO 3.

  3. CHECK AWD LOCK SWITCH 
    1. Turn ignition switch OFF.
    2. Disconnect AWD lock switch connector.
    3. Check continuity between AWD lock switch connector M55 terminals 1 and 3.
      Fig 2: Checking Continuity Between AWD And Terminals
      G01200045Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 3: AWD Lock Switch Check Table
      G01200044Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO 4.
    2. NG: Repair AWD lock switch.

  4. CHECK AWD LOCK SWITCH POWER SUPPLY 
    1. Turn ignition switch ON"
    2. Check the voltage between the AWD lock switch connector M55 terminal NO.1(BR/Y) and ground.
      3. Fig 4: Checking Voltage Between AWD And Ground
      G01200046Courtesy of NISSAN MOTOR CO., U.S.A.

    1 (BR/Y) - Ground: Approx. 4V 

    OK or NG 

    1. OK: GO TO 5.
    2. NG: GO TO  6.

  5. CHECK GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Check continuity between the AWD lock switch connector M55 terminal NO.3(B) and ground.
      3. Fig 5: Checking Continuity Between AWD And Ground
      G01200047Courtesy of NISSAN MOTOR CO., U.S.A.

    3 (B) - Ground: Continuity should exist. 

    OK or NO 

    1. OK: Check the unified meter and A/C amp. Refer to UNIFIED METER AND A/C AMP .
    2. NG: Repair or replace the harness or connectors.

  6. CHECK POWER SOURCE CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect unified meter control unit connector.
    3. Check the continuity between the following terminals.
      • unified meter control unit harness connector M49 terminal No. 5 (BR/Y) and AWD lock switch harness connector M55 terminal No. 1 (BR/Y).
      Fig 6: Checking Continuity Between Terminals
      G01200048Courtesy of NISSAN MOTOR CO., U.S.A.

      5 (BR/Y) - 1 (BR/Y): Continuity should exist. 

    1. OK: Check the unified meter and A/C amp. Refer to UNIFIED METER AND A/C AMP .
    2. NG: Repair or replace the harness or connectors.
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