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Flexible Fuel Vehicle

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK OVERALL FUNCTION 
    1. Turn ignition switch ON.
    2. Pinch fuel feed hose with two fingers.

      Fuel pressure pulsation should be felt on the fuel feed hose for 1 second after ignition switch is turned ON  .

      OK or NG 

      OK: INSPECTION END 

      NG: GO TO 2.

      Fig 1: Pinching Fuel Feed Hose
      G08690823Courtesy of NISSAN NORTH AMERICA, INC.
  2. CHECK FUEL PUMP POWER SUPPLY CIRCUIT-I 
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Turn ignition switch ON.
    4. Check voltage between ECM terminal 113 and ground with CONSULT or tester.

      Voltage: Battery voltage 

      OK or NG 

      OK: GO TO  4.

      NG: GO TO 3.

      Fig 2: Checking Voltage Between ECM Terminal 113 And Ground
      G08690824Courtesy of NISSAN NORTH AMERICA, INC.
  3. CHECK FUEL PUMP POWER SUPPLY CIRCUIT-II 

    Check voltage between IPDM E/R terminal 46 and ground with CONSULT or tester.

    Voltage: Battery voltage 

    OK or NG 

    OK: Repair open circuit or short to ground or short to power in harness or connector.

    NG: Replace IPDM E/R. Refer to UNIT REMOVAL AND INSTALLATION .

    Fig 3: Checking Voltage Between IPDM E/R Terminal 46 And Ground
    G08690825Courtesy of NISSAN NORTH AMERICA, INC.
  4. CHECK CONDENSER-2 POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Reconnect all harness connectors disconnected.
    3. Disconnect condenser-2 harness connector.
    4. Turn ignition switch ON.
      Fig 4: Identifying IPDM E/R And Condenser-2
      G08690826Courtesy of NISSAN NORTH AMERICA, INC.
    5. Check voltage between condenser-2 terminal 1 and ground with CONSULT or tester.

      Voltage: Battery voltage should exist for 1 second after ignition switch is turned ON  .

    6. Also check harness for short to ground and short to power.

      OK or NG 

      OK: GO TO  7.

      NG: GO TO 5.

      Fig 5: Checking Voltage Between Condenser-2 Terminal 1 And Ground
      G08690827Courtesy of NISSAN NORTH AMERICA, INC.
  5. CHECK 15A FUSE 
    1. Turn ignition switch OFF.
    2. Disconnect 15 A fuse.
    3. Check 15 A (No. 48) fuse.

      OK or NG 

      OK: GO TO 6.

      NG: Replace fuse.

  6. CHECK CONDENSER-2 POWER SUPPLY CIRCUIT-II FOR OPEN AND SHORT 
    1. Disconnect IPDM E/R harness connector E119.
    2. Check harness continuity between IPDM E/R terminal 13 and condenser-2 terminal 1.

      Refer to WIRING DIAGRAM .

      Continuity should exist  .

    3. Also check harness for short to ground and short to power.

      OK or NG 

      OK: GO TO  13.

      NG: Repair open circuit or short to ground or short to power in harness or connectors.

  7. CHECK CONDENSER-2 GROUND CIRCUIT FOR OPEN AND SHORT 
    1. Check harness continuity between condenser-2 terminal 2 and ground.

      Refer to WIRING DIAGRAM .

      Continuity should exist  .

    2. Also check harness for short to power.

      OK or NG 

      OK: GO TO 8.

      NG: Repair open circuit or short to power in harness or connectors.

  8. CHECK CONDENSER-2 

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 9.

    NG: Replace condenser-2.

  9. CHECK FUEL PUMP POWER SUPPLY AND GROUND CIRCUIT FOR OPEN AND SHORT 
    1. Turn ignition switch OFF.
    2. Disconnect "fuel level sensor unit and fuel pump" harness connector.
    3. Disconnect IPDM E/R harness connector E119.
    4. Disconnect dropping resistor harness connector.
    5. Check harness continuity between IPDM E/R terminal 13 and "fuel level sensor unit and fuel pump" terminal 1, "fuel level sensor unit and fuel pump" terminal 2 and dropping resistor terminal 2, dropping resistor terminal 1 and ground.

      Refer to WIRING DIAGRAM .

      Continuity should exist  .

    6. Also check harness for short to ground and short to power.

      OK or NG 

      OK: GO TO  11.

      NG: GO TO 10.

      Fig 6: Identifying Fuel Level Sensor Unit And Fuel Pump Harness Connector
      G08690828Courtesy of NISSAN NORTH AMERICA, INC.
  10. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connectors E41, C1
    • Harness for open or short between fuel pump and IPDM E/R
    • Harness for open or short between fuel pump and dropping resistor
    • Harness for open or short between dropping resistor and ground

      : Repair open circuit or short to ground or short to power in harness or connectors.

  11. CHECK DROPPING RESISTOR 

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 12.

    NG: Replace dropping resistor.

  12. CHECK FUEL PUMP 

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 13.

    NG: Replace "fuel level sensor unit and fuel pump". Refer to FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY .

  13. CHECK INTERMITTENT INCIDENT 

    Refer to "HOW TO CHECK TERMINAL " and "INTERMITTENT INCIDENT ".

    OK or NG 

    OK: Replace IPDM E/R. Refer to UNIT REMOVAL AND INSTALLATION .

    NG: Repair or replace harness or connectors.

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