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Door Key Cylinder Switch Check

WARNING: This page is about a different car, the 2004 Infiniti G35. 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 for "POWER DOOR LOCK SYSTEM" with CONSULT-II. Refer to WORK SUPPORT

    Fig 1: Data Monitor Display
    G03698183Courtesy of NISSAN MOTOR CO., U.S.A.
    MONITOR ITEM CHART

    Monitor item Condition
    KEY CYL LK-SW Neutral/Unlock : OFF
    Lock : ON  
    KEY CYL UN-SW Neutral/Lock : OFF
    Unlock : ON  

    Without CONSULT-II 

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

    Fig 2: Checking Voltage Between Terminal 6, 7 & Ground
    G03698184Courtesy of NISSAN MOTOR CO., U.S.A.
    VOLTAGE CHART

    Connector Terminals (Wire color) Key position Voltage (V) (Approx.)
    (+) (-)
    D7 6 (Y) Ground Neutral/Unlock 5
    Lock 0
    7 (SB) Neutral/Unlock 5
    Unlock 0

    OK or NG

    1. OK: Further inspection is necessary. Refer to SYMPTOM CHART  .
    2. NG: GO TO  2 .
  2. CHECK DOOR KEY CYLINDER SWITCH CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect power window main switch (door lock and unlock switch) and door key cylinder switch connector.
    3. Check continuity between power window main switch (door lock and unlock switch) connector D7 terminal 6, 7 and door key cylinder switch connector D15 terminals 1, 6.
      Fig 3: Checking Continuity Between Terminal 6, 7 & Terminals 1, 6
      G03698185Courtesy of NISSAN MOTOR CO., U.S.A.

      6 (Y) - 1 (Y): Continuity should exist. 

      7 (SB) - 6 (SB): Continuity should exist  .

    OK or NG

    1. OK: GO TO  3 .
    2. NG: Repair or replace harness between power window main switch and door key cylinder switch.
  3. CHECK DOOR KEY CYLINDER SWITCH GROUND 

    Check continuity between door key cylinder switch connector D15 terminal 5 and ground.

    Fig 4: Checking Continuity Between Terminal 5 & Ground
    G03698186Courtesy of NISSAN MOTOR CO., U.S.A.

    5 (B) - Ground: Continuity should exist  .

    OK or NG

    1. OK: GO TO  4 .
    2. NG: Repair or replace harness.
  4. CHECK DOOR KEY CYLINDER SWITCH 

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

    Fig 5: Checking Continuity Between Terminal 1, 6 & 5
    G03698187Courtesy of NISSAN MOTOR CO., U.S.A.
    CONTINUITY CHART

    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 SYMPTOM CHART  .
    2. NG: Replace door key cylinder switch.