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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 1524 (Body, Lock & Security System) >> Vehicle Security (Theft Warning) System >> Diagnostic Procedure 3

Diagnostic Procedure 3

WARNING: This page is about a different car, the 2005 Nissan Quest. 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) 

    With CONSULT-II

    Check front door lock assembly LH (key cylinder switch) ("KEY CYL LK-SW") and ("KEY CYL UN-SW) in DATA MONITOR mode in CONSULT-II. Refer to "DATA MONITOR ".

    Fig 1: CONSULT-II Data Display KEY CYL LK-SW And KEY CYL UN-SW
    G02448179Courtesy of NISSAN MOTOR CO., U.S.A.
    • When key inserted in front door LH key cylinder is turned to LOCK:
      • KEY CYL LK-SW: ON 
    • When key inserted in front key cylinder is turned to UNLOCK:
      • KEY CYL UN-SW: ON 

    Without CONSULT-II

    Check voltage between main power window and door lock/unlock switch connector D7 terminals 6, 7 (without power vent windows) or terminals 4, 6 (with power vent windows) and ground.

    Without Power Vent Windows 

    Fig 2: Checking Voltage Between Main Power Window And Door Lock/Unlock Switch Connector D7 Terminals 6, 7 & Ground
    G02448181Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 3: Voltage Specifications
    G02448180Courtesy of NISSAN MOTOR CO., U.S.A.

    With Power Vent Windows 

    Fig 4: Voltage Specifications
    G02448182Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 5: Checking Voltage Between Main Power Window And Door Lock/Unlock Switch Connector D7 Terminals 4, 6 & Ground
    G02448183Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    • OK: Front door lock assembly LH (key cylinder switch) signal is OK.
    • NG: GO TO 2.
  2. CHECK DOOR KEY CYLINDER SWITCH LH 
    1. Turn ignition switch off.
    2. Disconnect front door lock assembly LH (key cylinder switch).
    3. Check continuity between front door lock assembly LH (key cylinder switch) connector terminals 1, 5 and 6.
      CONTINUITY SPECIFICATIONS TABLE

      Terminals Condition Continuity
      1 - 5 Key is turned to LOCK. Yes
      6 - 5 Key is turned to UNLOCK. Yes
      Fig 6: Checking Continuity Between Front Door Lock Assembly LH Connector Terminals 1, 5 & 6
      G02448184Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    • OK: Check the following.
      • Front door lock assembly LH (key cylinder switch) ground circuit.
      • Harness for open or short between main power window and door lock/unlock switch and front door lock assembly LH (key cylinder switch).
    • NG: Replace front door lock assembly LH. Refer to "FRONT DOOR LOCK ".