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Home >> Infiniti >> 2017 >> QX80 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (3 Of 4) >> DTC/Circuit Diagnosis >> DTC P1220: Fuel Pump Control Module (FPCM) >> DTC Logic >> DTC Confirmation Procedure
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DTC Confirmation Procedure

  1. PRECONDITIONING

    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Turn ignition switch ON.
    3. Turn ignition switch OFF and wait at least 10 seconds.

    TESTING CONDITION: 

    • Before performing the following procedure, confirm that battery voltage is between 12 - 15 V at idle. 
    • Before performing the following procedure, check that the engine coolant temperature is - 10°C (14°F) or more. 

    GO TO STEP 2  .

  2. PERFORM DTC CONFIRMATION PROCEDURE

    1. Start engine and let it idle for at least 5 seconds.

      If engine does not start, crank engine for at least 5 seconds.

    2. Check DTC.

    Is DTC detected?

    YES 

    Go to DIAGNOSIS PROCEDURE .

    NO 

    INSPECTION END

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