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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Security Control System (DTC/Circuit Diagnosis)) >> DTC / Circuit Diagnosis >> DTC B2601: Shift Position >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CVT SHIFT SELECTOR SWITCH FUNCTION 

    SYMBOL CONSULT

    1. Turn ignition switch ON.
    2. Select "DETE/CANCL SW" and "DETE SW -IPDM" in "Data Monitor" mode.
    3. Check "DETE/CANCL SW" and "DETE SW -IPDM" indication under the following conditions:

      Monitor item

      Condition

      Indication

      DETE/CANCL SW

      CVT Shift selector

      In any position other than P (Park)

      ON

      P (Park)

      OFF

      DETE SW -IPDM

      CVT Shift selector

      In any position other than P (Park)

      ON

      P (Park)

      OFF

    Is the inspection result normal?

    YES

    Refer to Intermittent Incident .

    NO

    If "DETE/CANCL SW" function is incorrect. GO TO 2.

    NO

    If "DETE SW -IPDM" function is incorrect. GO TO 5.

  2. CHECK CVT SHIFT SELECTOR CIRCUIT (BCM) 
    1. Disconnect BCM connector and IPDM E/R connector.
    2. Check continuity between CVT shift selector (park position switch) harness connector and BCM harness connector.

      CVT shift selector (park position switch)

      BCM

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M78

      6

      M21

      20

      Yes

    3. Check continuity between CVT shift selector (park position switch) harness connector and ground.

      CVT shift selector (park position switch)

      Ground

      Continuity

      Connector

      Terminal

      M78

      6

      No

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Repair or replace harness.

  3. CONNECTOR INSPECTION 
    1. Disconnect BCM.
    2. Check connectors and terminals for deformation, disconnection, looseness or damage.

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Repair or replace as necessary.

  4. REPLACE BCM 
    1. Replace BCM. Refer to Removal and Installation .
    2. Perform initialization of BCM and registration of all Intelligent Keys using CONSULT.

    Inspection End.

  5. CHECK CVT SHIFT SELECTOR CIRCUIT (IPDM E/R) 

    Check continuity between CVT shift selector (park position switch) harness connector and IPDM E/R harness connector.

    CVT shift selector (park position switch)

    IPDM E/R

    Continuity

    Connector

    Terminal

    Connector

    Terminal

    M78

    6

    E19

    31

    Yes

    Is the inspection result normal?

    YES

    GO TO 6.

    NO

    Repair or replace harness.

  6. CONNECTOR INSPECTION 
    1. Disconnect IPDM E/R.
    2. Check connectors and terminals for deformation, disconnection, looseness or damage.

    Is the inspection result normal?

    YES

    GO TO 7.

    NO

    Repair or replace as necessary.

  7. REPLACE IPDM E/R 
    1. Replace IPDM E/R. Refer to Removal and Installation .

    Inspection End.