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Home >> Infiniti >> 2011 >> G37 IPL, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 61 (Automatic Transmission -- G37 Coupe) >> DTC/Circuit Diagnosis >> Selector Lever Position Indicator >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK MALFUNCTIONING ITEM

    Which item is abnormal? 

    Position indicator lamp: Go to 2.

    Illumination lamp: Go to  10.

  2. CHECK POWER SOURCE
    1. Turn ignition switch OFF.
    2. Disconnect A/T shift selector connector.
    3. Turn ignition switch ON.
    4. Check voltage between A/T shift selector vehicle side harness connector terminals.
      VOLTAGE REFERENCE CHART

      A/T shift selector vehicle side harness connector Voltage (Approx.)
      Connector Terminal
      + -
      M137 10 4 Battery voltage

      Is the inspection result normal? 

      YES: Go to  7.

      NO: Go to 3.

  3. CHECK GROUND CIRCUIT
    1. Turn ignition switch OFF.
    2. Check continuity between A/T shift selector vehicle side harness connector terminal and ground.
      CONTINUITY REFERENCE CHART

      A/T shift selector vehicle side harness connector Ground Continuity
      Connector Terminal
      M137 4 Existed

      Is the inspection result normal? 

      YES: Go to 4.

      NO: Repair or replace damaged parts.

  4. CHECK HARNESS BETWEEN A/T SHIFT SELECTOR AND BCM (PART 1)
    1. Disconnect BCM connector.
    2. Check continuity between A/T shift selector vehicle side harness connector terminal and BCM vehicle side harness connector terminal.
      CONTINUITY REFERENCE CHART

      A/T shift selector vehicle side harness connector BCM vehicle side harness connector Continuity
      Connector Terminal Connector Terminal
      M137 10 M122 96 Existed

      Is the inspection result normal? 

      YES: Go to 5.

      NO: Repair or replace damaged parts.

  5. CHECK HARNESS BETWEEN A/T SHIFT SELECTOR AND BCM (PART 2)

    Check continuity between A/T shift selector vehicle side harness connector terminal and ground.

    CONTINUITY REFERENCE CHART

    A/T shift selector vehicle side harness connector Ground Continuity
    Connector Terminal
    M137 10 Not existed

    Is the inspection result normal? 

    YES: Go to 6.

    NO: Repair or replace damaged parts.

  6. CHECK MALFUNCTIONING ITEM

    Check the following.

    • Check terminals of BCM connector and A/T shift selector connector for damage.
    • Check connector for loose connection.

      Is the inspection result normal? 

      YES: Check BCM input/output signal. Refer to "REFERENCE VALUE ".

      NO: Repair or replace damaged parts.

  7. CHECK SHIFT POSITION SWITCH
    1. Disconnect selector lever position indicator connector.
    2. Check continuity between A/T shift selector harness connector terminals and selector lever position indicator connector terminals.
      CONTINUITY REFERENCE CHART

      A/T shift selector harness connector Selector lever position indicator connector Condition Continuity
      Connector Terminal Connector Terminal
      M137 4 M221 7 Selector lever in "D" position. Existed
      2, 3, 4, 5, 6, 9, 10, 11 Not existed
      9 Selector lever in "M" position. Existed
      2, 3, 4, 5, 6, 7, 10, 11 Not existed
      10 2, 6 Selector lever in "N" and "M" position. Existed
      3, 4, 5, 7, 9, 10, 11 Not existed
      3, 6 Selector lever in "D" position. Existed
      2, 4, 5, 7, 9, 10, 11 Not existed
      4, 6 Selector lever in "R" position. Existed
      2, 3, 5, 7, 9, 10, 11 Not existed
      5, 6 Selector lever in "P" position. Existed
      2, 3, 4, 7, 9, 10, 11 Not existed

      Is the inspection result normal? 

      YES: Go to 8.

      NO: Repair or replace damaged parts. Refer to "REMOVAL AND INSTALLATION ".

  8. CHECK SELECTOR LEVER POSITION INDICATOR

    Check selector lever position indicator. Refer to "COMPONENT INSPECTION (SELECTOR LEVER POSITION INDICATOR) ".

    Is the inspection result normal? 

    YES: Go to 9.

    NO: Replace damaged parts.

  9. CHECK MALFUNCTIONING ITEM

    Check the following.

    • Check terminals of A/T shift selector connector, shift position switch connector and selector lever position indicator connector for damage.
    • Check connector for loose connection.

      Is the inspection result normal? 

      YES: Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".

      NO: Repair or replace damaged parts.

  10. CHECK POWER SOURCE
    1. Turn ignition switch OFF.
    2. Disconnect A/T shift selector connector.
    3. Turn ignition switch ON.
    4. Check voltage between A/T shift selector vehicle side harness connector terminals.
      VOLTAGE REFERENCE CHART

      A/T shift selector vehicle side harness connector Condition Voltage (Approx.)
      Connector Terminal
      + -
      M137 7 9 Lighting switch 1ST Battery voltage

      Is the inspection result normal? 

      YES: Go to 11.

      NO: Check illumination circuit. Refer to "WIRING DIAGRAM - ILLUMINATION - ".

  11. CHECK SHIFT POSITION SWITCH
    1. Disconnect selector lever position indicator connector.
    2. Check continuity between A/T shift selector harness connector terminals and selector lever position indicator connector terminals.
      CONTINUITY REFERENCE CHART

      A/T shift selector harness connector Selector lever position indicator connector Continuity
      Connector Terminal Connector Terminal
      M137 7 M221 10 Existed
      2, 3, 4, 5, 6, 7, 9, 11 Not existed
      9 11 Existed
      2, 3, 4, 5, 6, 7, 9, 10 Not existed

      Is the inspection result normal? 

      YES: Go to  8.

      NO: Repair or replace damaged parts. Refer to "REMOVAL AND INSTALLATION ".

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