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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 77 (Power Control System (IPDM E/R) (DTC/Circuit Diagnosis)) >> DTC/Circuit Diagnosis >> DTC B20A5: Fuel Pump Relay Stuck On >> 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. PERFORM SELF DIAGNOSTIC RESULT 

    Perform "Self Diagnostic Result" of "IPDM E/R" using CONSULT.

    Is display history of DTC B20A5 CRNT?

    YES

    GO TO 2 .

    NO

    Refer to Intermittent Incident .

  2. CHECK FUEL PUMP CIRCUIT FOR SHORT TO VOLTAGE 
    1. Disconnect IPDM E/R connector E18 and fuel level sensor unit and fuel pump connector B42.
    2. Check voltage between IPDM E/R connector and ground.

    IPDM E/R

    Ground

    Condition

    Voltage

    (Approx.)

    Connector

    Terminal

    E18

    15

    -

    Ignition switch: OFF

    0V

    Is the inspection result normal?

    YES

    Replace IPDM E/R. Refer to Removal and Installation .

    NO

    Repair or replace harness or connectors.

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