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Home >> Infiniti >> 2012 >> G37 Base, 2D Convertible >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 187 (Security Control System) >> DTC/Circuit Diagnosis >> DTC B2602: Shift Position >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Nissan 370Z. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC WITH "ABS ACTUATOR AND ELECTRIC UNIT"

    Check "Self-diagnostic result" using CONSULT-III. Refer to "DTC INDEX ".

    Is the inspection result normal? 

    YES: Go to 2.

    NO: Repair or replace the malfunctioning parts.

  2. CHECK A/T SHIFT SELECTOR POWER SUPPLY
    1. Turn ignition switch OFF.
    2. Disconnect A/T shift selector (detention switch) connector.
    3. Check voltage between A/T shift selector (detention switch) harness connector and ground.
      VOLTAGE SPECIFICATION

      (+) (-) Voltage (V) (Approx.)
      A/T shift selector (detention switch)
      Connector Terminal
      M137 9 Ground Battery voltage

      Is the inspection result normal? 

      YES: Go to  4.

      NO: Go to 3.

  3. CHECK A/T SHIFT SELECTOR POWER SUPPLY CIRCUIT
    1. Disconnect BCM connector.
    2. Check continuity between A/T shift selector (detention switch) harness connector and BCM harness connector.
      CONTINUITY SPECIFICATION

      A/T shift selector (detention switch) BCM Continuity
      Connector Terminal Connector Terminal
      M137 9 M122 96 Existed
    3. Check continuity between A/T shift selector (detention switch) harness connector and ground.
      CONTINUITY SPECIFICATION

      A/T shift selector (detention switch) Ground Continuity
      Connector Terminal
      M137 9 Not existed

      Is the inspection result normal? 

      YES: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

      NO: Repair or replace harness.

  4. CHECK A/T SHIFT SELECTOR CIRCUIT
    1. Disconnect BCM connector and IPDM E/R connector.
    2. Check continuity between A/T shift selector (detention switch) harness connector and BCM harness connector.
      CONTINUITY SPECIFICATION

      A/T shift selector (detention switch) BCM Continuity
      Connector Terminal Connector Terminal
      M137 10 M122 99 Existed
    3. Check continuity between A/T shift selector (detention switch) harness connector and ground.
      CONTINUITY SPECIFICATION

      A/T shift selector (detention switch) Ground Continuity
      Connector Terminal
      M137 10 Not existed

      Is the inspection result normal? 

      YES: Go to 5.

      NO: Repair or replace harness.

  5. CHECK A/T SHIFT SELECTOR (DETENTION SWITCH)

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: Go to 6.

    NO: Replace A/T shift selector. Refer to "REMOVAL AND INSTALLATION ".

  6. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    INSPECTION END

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