LEMON Manuals: Even more car manuals for everyone
Home >> Infiniti >> 2011 >> FX35 RWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Door & Lock - With Automatic Back Door -- FX35/FX50 >> DTC/Circuit Diagnosis >> DTC B2422: Back Door State >> Diagnosis Procedure

Diagnosis Procedure

  1. CALIBRATION OF AUTOMATIC BACK DOOR POSITION INFORMATION
    1. Perform initialization setting of automatic back door position information. Refer to "WORK PROCEDURE ".
    2. Erase DTC, and then repeat "PERFORM DTC CONFIRMATION PROCEDURE".

      Is DTC detected? 

      YES: GO TO 2.

      NO: INSPECTION END

  2. CHECK INSTALLATION OF BACK DOOR ASSEMBLY
    1. Check that back door assembly is installed normally. Refer to "BACK DOOR ASSEMBLY : ADJUSTMENT ".
    2. Check back door assembly mechanism deformation, looseness, rattle, interference with other parts, and pinched foreign materials.

      Is the inspection result normal? 

      YES: GO TO 3.

      NO: Repair or replace the malfunctioning parts.

  3. CHECK ENCODER SIGNAL
    1. Select "AUTOMATIC BACK DOOR CONTROL UNIT" using CONSULT-III.
    2. Select "SPINDLE SENSOR LH" and "SPINDLE SENSOR RH" in "DATA MONITOR" mode.
    3. Check that the function operates normally according to the following conditions.
      MONITOR ITEMS STATUS

      Monitor item Status
      SPINDLE SENSOR LH 0 - 65535
      SPINDLE SENSOR RH 0 - 65535

      Is the difference between the 2 monitor items 10 or more? 

      YES: GO TO 4.

      NO: Replace automatic back door control unit. Refer to "REMOVAL AND INSTALLATION ".

  4. CHECK ENCODER POWER SUPPLY
    1. Turn ignition switch OFF.
    2. Disconnect spindle unit connector.
    3. Check voltage between spindle unit harness connector and ground.
      VOLTAGE REFERENCE CHART

      (+) (-) Voltage (Approx.)
      Spindle unit
      Connector Terminal
      LH B95 3 Ground 16.75 - 6 V
      RH B262

      Is the inspection result normal? 

      YES: GO TO  6.

      NO: GO TO 5.

  5. CHECK ENCODER CIRCUIT
    1. Disconnect automatic back door control unit connector.
    2. Check continuity between automatic back door control unit harness connector and spindle unit harness connector.
      CONTINUITY REFERENCE CHART

      Automatic back door control unit Spindle unit Continuity
      Connector Terminal Connector Terminal
      B207 19 LH B95 3 Existed
      20 RH B262
    3. Check continuity between automatic back door control unit harness connector and ground.
      CONTINUITY REFERENCE CHART

      Automatic back door control unit Ground Continuity
      Connector Terminal
      B207 19 Not existed
      20

      Is the inspection result normal? 

      YES: Replace automatic back door control unit. Refer to "REMOVAL AND INSTALLATION ".

      NO: Repair or replace harness.

  6. CHECK ENCODER CIRCUIT 2
    1. Disconnect automatic back door control unit connector.
    2. Check continuity between automatic back door control unit harness connector and spindle unit harness connector.
      CONTINUITY REFERENCE CHART

      Automatic back door control unit Spindle unit Continuity
      Connector Terminal Connector Terminal
      B207 6 LH B95 4 Existed
      7 5
      8 RH B262 4
      9 5
    3. Check continuity between automatic back door control unit harness connector and ground.
      CONTINUITY REFERENCE CHART

      Automatic back door control unit Ground Continuity
      Connector Terminal
      B207 6 Not existed
      7
      8
      9

      Is the inspection result normal? 

      YES: GO TO 7.

      NO: Repair or replace harness.

  7. CHECK ENCODER CIRCUIT 3
    1. Connect automatic back door control unit and spindle unit connector
    2. Check continuity between automatic back door control unit harness connector and ground.
      CONTINUITY REFERENCE CHART

      Automatic back door control unit Ground Voltage (Approx.)
      Connector Terminal
      B207 21 0 V

      Is the inspection result normal? 

      YES: GO TO 8.

      NO: Replace automatic back door control unit. Refer to "REMOVAL AND INSTALLATION ".

  8. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    Is the inspection result normal? 

    YES: Replace automatic back door control unit. Refer to "REMOVAL AND INSTALLATION ".

    NO: Repair or replace the malfunctioning parts.