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Home › Nissan-Datsun › 2004 › Sentra SE-R › Repair and Diagnosis › External Pages › Different car › Section 2084 (Glass, Window System & Mirrors) › Power Window System › Front Door Lock Assembly LH (Key Cylinder Switch) Check

Front Door Lock Assembly LH (Key Cylinder Switch) Check

WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH) INPUT SIGNAL 

    With CONSULT-III 

    • Check front door lock assembly LH (key cylinder switch) ("KEY CYL LK SW") in "DATA MONITOR" mode for "POWER DOOR LOCK SYSTEM" with CONSULT-III.

      "KEY CYL LK-SW" should be "ON" when key inserted in door key cylinder is turned to lock. 

      Fig 1: CONSULT-III Display - DATA MONITOR
      G04902777Courtesy of NISSAN MOTOR CO., U.S.A.
    • Check front door lock assembly LH (key cylinder switch) ("KEY CYL UN-SW") in "DATA MONITOR" mode for "POWER DOOR LOCK SYSTEM" with CONSULT-III.

      "KEY CYL UN-SW" should be "ON" when key inserted in door key cylinder was turned to unlock. 

    Fig 2: CONSULT-III Display - DATA MONITOR
    G04902778Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-III 

    Check voltage between main power window and door lock/unlock switch connector and ground.

    MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH CONNECTOR AND GROUND

    Connector Terminals Key position Voltage (V) (Approx.)
    (+) (-)
    D7 4 Ground Neutral/Unlock 5
    Lock 0
    6 Neutral/Lock 5
    Unlock 0
    Fig 3: Checking Voltage Between Main Power Window And Door Lock/Unlock Switch Connector And Ground
    G04912970Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Front door lock assembly LH (key cylinder switch) is OK.

    NG: GO TO 2.

  2. CHECK FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH) CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect main power window and door lock/unlock switch and front door lock assembly LH (key cylinder switch).
    3. Check continuity between main power window and door lock/unlock switch connector D7 terminals 4, 6 and front door lock assembly LH (key cylinder switch) connector D51 terminals 1, 6.

      6 - 6: Continuity should exist. 

      4 - 1: Continuity should exist. 

    Fig 4: Checking Continuity Between Main Power Window Switch Terminals And Front Door Lock Assembly Terminals
    G04902780Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO 3.

    NG: Repair or replace harness.

  3. CHECK FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH) GROUND 

    Check continuity between front door lock assembly LH (key cylinder switch) connector D51 terminal 5 and ground.

    5 - Ground: Continuity should exist. 

    Fig 5: Checking Continuity Between Front Door Lock Assembly LH (Key Cylinder Switch) Connector D51 And Ground
    G04902781Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO 4.

    NG: Repair or replace harness.

  4. CHECK FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH) 

    Check continuity between front door lock assembly LH (key cylinder switch) terminals 1, 6 and 5.

    FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH) TERMINALS 1, 6 AND 5

    Terminals Key position Continuity
    1 5 Neutral/Unlock No
    Lock Yes
    6 Neutral/Lock No
    Unlock Yes
    Fig 6: Checking Continuity Between Front Door Lock Assembly LH (Key Cylinder Switch) Terminals 1, 6 And 5
    G04902782Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Replace main power window and door lock/unlock switch. Refer to "FRONT DOOR ".

    NG: Replace front door lock assembly LH (key cylinder switch). Refer to "REMOVAL AND INSTALLATION "

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