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Home >> Nissan-Datsun >> 2023 >> Leaf SV Plus >> Repair and Diagnosis >> Body & Frame >> Ignition Switch/Steering Lock >> Security Control System (With Intelligent Key System) (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> DTC B2603: Shift POSI Status >> DTC Diagnosis Procedure
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DTC Diagnosis Procedure

  1. INSPECTION START 

    Perform inspection in accordance with the procedure that confirms DTC.

    Which procedure confirms DTC?

    DTC confirmation procedure 1>>

    GO TO 2.

    DTC confirmation procedure 2>>

    GO TO 5.

  2. CHECK DTC OF VCM 

    SYMBOL CONSULT Select "Self Diagnostic Result" mode of "SHIFT".

    Is DTC detected?

    YES>>

    Perform the trouble diagnosis related to the detected DTC. Refer to DTC Index .

    NO>>

    GO TO 3.

  3. CHECK P/N POSITION SIGNAL CIRCUIT 
    1. Power switch OFF.
    2. Disconnect BCM connector.
    3. Disconnect VCM connector.
    4. Check continuity between BCM harness connector and VCM harness connector.
      BCM VCM Continuity
      Connector Terminal Connector Terminal
      M23 102 E61 21 Yes
    5. Check continuity between BCM harness connector and ground.
      BCM - Continuity
      Connector Terminal
      M23 102 Ground No

    Is the inspection result normal?

    YES>>

    GO TO 4.

    NO>>

    Repair or replace harness.

  4. REPLACE BCM 

    SYMBOL CONSULT

    1. Replace BCM. Refer to Removal and Installation .
    2. Perform initialization of BCM and registration of all Intelligent Keys. Refer to the CONSULT Immobilizer mode and follow the on screen instructions.

    >>

    Inspection End.

  5. CHECK DTC OF VCM 

    SYMBOL CONSULT Select "Self Diagnostic Result" mode of "SHIFT".

    Is DTC detected?

    YES>>

    Perform the trouble diagnosis related to the detected DTC. Refer to DTC Index .

    NO>>

    GO TO 6.

  6. CHECK P POSITION SIGNAL CIRCUIT 
    1. Power switch OFF.
    2. Disconnect BCM connector, IPDM E/R connector and VCM connector.
    3. Check continuity between BCM harness connector and VCM harness connector.
      BCM VCM Continuity
      Connector Terminal Connector Terminal
      M24 37 E61 32 Yes
    4. Check continuity between BCM harness connector and ground.
      BCM - Continuity
      Connector Terminal
      M24 37 Ground No

    Is the inspection result normal?

    YES>>

    GO TO 7.

    NO>>

    Repair or replace harness.

  7. REPLACE BCM 

    SYMBOL CONSULT

    1. Replace BCM. Refer to Removal and Installation .
    2. Perform initialization of BCM and registration of all Intelligent Keys. Refer to the CONSULT Immobilizer mode and follow the on screen instructions.

    >>

    Inspection End.

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