LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2013 >> EX37 Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 32 (Security Control System) >> Component Diagnosis >> DTC B2601: Shift Position >> Diagnosis Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnosis Procedure

WARNING: This page is about a different car, the 2008 Infiniti EX35. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CONTROL DEVICE POWER SUPPLY 
    1. Turn ignition switch OFF.
    2. Disconnect control device (detention switch) connector.
    3. Check voltage between control device (detention switch) harness connector and ground.
      TERMINALS VOLTAGE REFERENCE

      (+) (-) Voltage (V) (Approx.)
      Control device (detention switch)
      Connector Terminal
      M137 10 Ground Battery voltage

    Is the inspection result normal? 

    YES: GO TO  3.

    NO: GO TO  2.

  2. CHECK CONTROL DEVICE POWER SUPPLY CIRCUIT 
    1. Disconnect BCM connector M122.
    2. Check continuity between control device (detention switch) harness connector and BCM harness connector.
      TERMINALS CONTINUITY REFERENCE

      Control device (detention switch) BCM Continuity
      Connector Terminal Connector Terminal
      M137 10 M122 96 Existed
    3. Check continuity between control device (detention switch) harness connector and ground.
      TERMINALS CONTINUITY REFERENCE

      Control device (detention switch) Ground Continuity
      Connector Terminal
      M137 10 Not existed

    Is the inspection result normal? 

    YES: Replace BCM. Refer to REMOVAL AND INSTALLATION .

    NO: Repair or replace harness or connector.

  3. CHECK CONTROL DEVICE CIRCUIT (BCM) 
    1. Disconnect BCM connector M122 and IPDM E/R connector E6.
    2. Check continuity between control device (detention switch) harness connector and BCM harness connector.
      TERMINALS CONTINUITY REFERENCE

      Control device (detention switch) BCM Continuity
      Connector Terminal Connector Terminal
      M137 11 M122 99 Existed
    3. Check continuity between control device (detention switch) harness connector and ground.
      TERMINALS CONTINUITY REFERENCE

      Control device (detention switch) Ground Continuity
      Connector Terminal
      M137 11 Not existed

    Is the inspection result normal? 

    YES: GO TO  4.

    NO: Repair or replace harness or connector.

  4. CHECK CONTROL DEVICE CIRCUIT (IPDM E/R) 
    1. Check continuity between control device (detention switch) harness connector and IPDM E/R harness connector.
      TERMINALS CONTINUITY REFERENCE

      Control device (detention switch) IPDM E/R Continuity
      Connector Terminal Connector Terminal
      M137 11 E6 43 Existed
    2. Check continuity between control device (detention switch) harness connector and ground.
      TERMINALS CONTINUITY REFERENCE

      Control device (detention switch) Ground Continuity
      Connector Terminal
      M137 11 Not existed

    Is the inspection result normal? 

    YES: GO TO  5.

    NO: Repair or replace harness or connector.

  5. CHECK CONTROL DEVICE (DETENTION SWITCH) 

    Refer to COMPONENT INSPECTION  .

    Is the inspection result normal? 

    YES: GO TO 6.

    NO: Replace control device. Refer to REMOVAL AND INSTALLATION (2WD) or REMOVAL AND INSTALLATION (AWD) .

  6. CHECK INTERMITTENT INCIDENT 

    Refer to INTERMITTENT INCIDENT .

    INSPECTION END

scientia non olet · About LEMON Manuals