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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1031 (Door & Lock) >> Component Diagnosis >> Key Slot Illumination >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK KEY SLOT ILLUMINATION OUTPUT SIGNAL

    Check voltage between key slot connector and ground.

    VOLTAGE SPECIFICATION

    Terminals Condition Key slot illumination Voltage (V) (Approx.)
    (+) (-)
    Key slot connector Terminal
    M40 6 Ground Intelligent Key inserted OFF Battery voltage
    Intelligent Key removed ON 0
    Fig 1: Checking Voltage Between Key Slot Connector And Ground
    G05046639Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: GO TO  6

    NO: GO TO 2

  2. CHECK KEY SLOT POWER SUPPLY CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect key slot connector.
    3. Check voltage between slot connector and ground.
      VOLTAGE SPECIFICATION

      Terminals Voltage (V) (Approx.)
      (+) (-)
      Key slot connector Terminal
      M40 1 Ground Battery voltage
      5
      Fig 2: Checking Voltage Between Slot Connector And Ground
      G05046637Courtesy of NISSAN MOTOR CO., U.S.A.

      Is the inspection result normal? 

      YES: GO TO 3

      NO: Repair or replace key slot power supply circuit.

  3. CHECK KEY SLOT GROUND CIRCUIT

    Check continuity between key slot connector and ground.

    CONTINUITY CHART

    Key slot connector Terminal Ground Continuity
    M40 7 Yes
    Fig 3: Checking Continuity Between Key Slot Connector And Ground
    G05046638Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: GO TO 4.

    NO: Repair or replace key slot ground circuit.

  4. CHECK KEY SLOT CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect BCM and key slot connector.
    3. Check continuity between BCM connector and key slot connector.
      CONTINUITY CHART

      BCM connector Terminal Key slot connector Terminal Continuity
      A: M19 80 B: M40 6 Yes
    4. Check continuity between BCM connector and ground.
      CONTINUITY CHART

      BCM connector Terminal Ground Continuity
      A: M19 80 No
      Fig 4: Checking Continuity Between BCM Connector And Ground
      G05046642Courtesy of NISSAN MOTOR CO., U.S.A.

      Is the inspection result normal? 

      YES: GO TO 5

      NO: Repair or replace harness between BCM and key slot.

  5. CHECK KEY SLOT

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 6

    NO: Replace key slot.

  6. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    Inspection End.