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Home >> Infiniti >> 2017 >> Q60 Base, RWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTCS) (2.0L Turbo) (1 Of 6) >> DTC/Circuit Diagnosis >> Power Supply And Ground Circuit >> Fuel Pump Control Module (FPCM) >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK FUSE AND FUSIBLE LINK

    1. Turn Ignition Switch OFF.
    2. Pull out the fuse and fusible link.
    3. Check that the fuse and fusible link are not blowing.
      Power Supply Fuse No.
      Ignition Power Supply No. 50
      No. 101

    Are the fuse and fusible link blown (open)?

    YES 

    Replace the fuse or fusible link after repairing the applicable circuit.

    NO 

    GO TO STEP 2  .

  2. CHECK FPCM GROUND CIRCUIT

    1. Disconnect FPCM harness connector.
    2. Check the continuity between FPCM harness connector and ground.
      + - Continuity
      FPCM
      Connector Terminal
      B133 9 Ground Existed

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair or replace error-detected parts.

  3. CHECK IGNITION POWER SUPPLY-1

    1. Insert the fuse which pulled out.
    2. Check the voltage between FPCM harness connector and ground.
      + - Voltage
      FPCM
      Connector Terminal
      B134 5 Ground Battery voltage

    Is the inspection result normal?

    YES 

    GO TO STEP 5  .

    NO 

    GO TO STEP 4  .

  4. CHECK IGNITION POWER SUPPLY CIRCUIT

    1. Disconnect IPDM E/R harness connector.
    2. Check the continuity between FPCM harness connector and IPDM E/R harness connector.
      + - Continuity
      FPCM IPDM E/R
      Connector Terminal Connector Terminal
      B134 5 E123 54 Existed
    3. Also check harness for short to ground.

    Is the inspection result normal?

    YES 

    Check IPDM E/R Power Supply circuit. Refer to DIAGNOSIS PROCEDURE .

    NO 

    Repair or replace error-detected parts.

  5. CHECK IGNITION POWER SUPPLY-2

    1. Turn Ignition Switch ON.
    2. Check the voltage between FPCM harness connector and ground.
      + - Voltage
      FPCM
      Connector Terminal
      B133 10 Ground Battery voltage

    Is the inspection result normal?

    YES 

    INSPECTION END

    NO 

    GO TO STEP 6  .

  6. CHECK IGNITION POWER SUPPLY CIRCUIT

    1. Disconnect MAIN Relay.
    2. Check the continuity between FPCM harness connector and MAIN Relay harness connector.
      + - Continuity
      FPCM MAIN Relay
      Connector Terminal Connector Terminal
      B133 10 E228 5 Existed
    3. Also check harness for short to ground.

    Is the inspection result normal?

    YES 

    Check ECM Power Supply and ground circuit. Refer to DIAGNOSIS PROCEDURE .

    NO 

    Repair or replace error-detected parts.

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