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Home >> Infiniti >> 2004 >> QX56 AWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Power Door Lock System >> Door Switch Check

Door Switch Check

  1. CHECK DOOR SWITCHES INPUT SIGNAL 

    With CONSULT-II

    Check door switches ("DOOR SW-DR", "DOOR SW-AS", "DOOR SW-RL", "DOOR SW-RR", "BACK DOOR SW", "TRNK OPN MNTR") in DATA MONITOR mode with CONSULT-II. Refer to DATA MONITOR  .

    • When any doors are open:
      • DOOR SW-DR: ON 
      • DOOR SW-AS: ON 
      • DOOR SW-RL: ON 
      • DOOR SW-RR: ON 
      • BACK DOOR SW: ON 
      • TRNK OPN MNTR: ON 
      Fig 1: CONSULT-II Screen Display - DATA MONITOR
      G02250898Courtesy of NISSAN MOTOR CO., U.S.A.
    • When any doors are closed:
      • DOOR SW-DR: OFF 
      • DOOR SW-AS: OFF 
      • DOOR SW-RL: OFF 
      • DOOR SW-RR: OFF 
      • BACK DOOR SW: OFF 
      • TRNK OPN MNTR: OFF 

    Without CONSULT-II

    Check voltage between BCM connector M18 or M19 terminals 12, 13, 42, 43, 47, 48 and ground.

    Fig 2: Terminal Voltage Table
    G02250899Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 3: Checking Voltage Between BCM And Ground
    G02250900Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK: System is OK.
    • NG: GO TO 2.
  2. CHECK DOOR SWITCH CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect door switch and BCM.
    3. Check continuity between door switch connector B8 (Front LH), B108 (Front RH), B18 (Rear LH), B118 (Rear RH) terminal 2 or D503 (Back latch) terminal 7, D707 (Glass hatch) terminal + and BCM connector M18, M19 terminals 12, 13, 42, 43, 47 and 48.
      Fig 4: Checking Continuity Between Door Switch And Ground
      G02250901Courtesy of NISSAN MOTOR CO., U.S.A.
      • 2 (SB) - 47 (SB): Continuity should exist 
      • 2 (R/L) - 12 (R/L): Continuity should exist 
      • 2 (R/Y) - 48 (R/Y): Continuity should exist 
      • 2 (GR) - 13 (GR): Continuity should exist 
      • 7 (R/W) - 43 (R/B): Continuity should exist 
      • + (GR) - 42 (GR): Continuity should exist 
    4. Check continuity between door switch connector B8 (Front LH), B108 (Front RH), B18 (Rear LH), B118 (Rear RH) terminal 2, D707 (Glass hatch) terminal + or D503 (Back latch) terminal 7 and ground.
      • 2 (SB, R/L, R/Y or GR) - Ground: Continuity should not exist 
      • 7 (R/W) - Ground: Continuity should not exist 
      • + (GR) - Ground: Continuity should not exist 

    OK or NG 

    • OK: GO TO 3.
    • NG: Repair or replace harness.
  3. CHECK DOOR SWITCHES 
    1. Disconnect door switch harness.
    2. Check continuity between door switch connector terminals.
    Fig 5: Terminal Continuity Table
    G02250902Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 6: Checking Continuity Between Door Switch Connector Terminals
    G02250903Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK: Check door switch case ground condition (front, rear door and glass hatch) or ground circuit (back door latch).
    • NG: Replace door switch.