2004 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE

Front Door Key Cylinder Switch (Driver Side) Check

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 DOOR KEY CYLINDER SWITCH INPUT SIGNAL 

    With CONSULT-II

    Check door key cylinder switch ("KEY CYL LK SW", "KEY CYL UN SW") in "DATA MONITOR" mode with CONSULT-II.

    MONITOR ITEM CONDITION

    Monitor item Condition
    KEY CYL LK-SW Lock :ON
    Neutral / Unlock :OFF
    KEY CYL UN-SW Unlock :ON
    Neutral / Lock :OFF
    Fig 1: Displaying KEY CYL LK SW And KEY CYL UN SW In DATA MONITOR Mode
    G03358919Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II

    Check voltage between power window main switch connector and ground.

    CONNECTOR TERMINAL VOLTAGE

    Connector Terminals (Wire color) Key position Voltage (V) (Approx.)
    (+) (-)
    D6 4 (L) Ground Lock 0
    Neutral / Unlock 5
    6 (R) Unlock 0
    Neutral / Lock 5

    OK or NG

    1. OK : Further inspection is necessary. Refer to TROUBLE DIAGNOSIS SYMPTOM CHART  .
    2. NG : GO TO 2.
    Fig 2: Checking Voltage Between Power Window Main Switch Connector And Ground
    G03358920Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK HARNESS CONTINUITY 
    1. Turn ignition switch OFF.
    2. Disconnect power window main switch and front door lock assembly (driver side) connector.
    3. Check continuity between power window main switch connector D6 terminals 4, 6 and front door lock assembly (driver side) connector D10 terminals 1, 6.
      1. 4 (L) - 1 (L) : Continuity should exist. 
      2. 6 (R) - 6 (R) : Continuity should exist. 

    OK or NG

    1. OK : GO TO 3.
    2. NG : Repair or replace harness between power window main switch and front door lock assembly (driver side).
    Fig 3: Checking Continuity Between Power Window Main Switch Connector D6 Terminals 4, 6 And Front Door Lock Assembly (Driver Side) Connector D10 Terminals 1, 6
    G03358921Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK GROUND CIRCUIT 

    Check continuity between key cylinder switch (driver side) connector D10 terminal 2 and ground.

    1. 5 (B) - Ground : Continuity should exist. 

    OK or NG

    1. OK : GO TO 4.
    2. NG : Repair or replace harness.
    Fig 4: Checking Continuity Between Key Cylinder Switch (Driver Side) Connector D10 Terminal 2 And Ground
    G03358922Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK DOOR KEY CYLINDER SWITCH 

    Check continuity between key cylinder switch terminals 1, 6 and 5.

    TERMINAL CONTINUITY

    Terminals Key position Continuity
    1 5 Neutral / Unlock No
    Lock Yes
    6 Neutral / Lock No
    Unlock Yes

    OK or NG

    1. OK : Further inspection is necessary. Refer to TROUBLE DIAGNOSIS SYMPTOM CHART  .
    2. NG : Replace key cylinder switch (driver side).
    Fig 5: Checking Continuity Between Key Cylinder Switch Terminals 1, 6 And 5
    G03358923Courtesy of NISSAN MOTOR CO., U.S.A.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.