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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1334 (Engine Controls - Pinpoint Tests - 6.0L (99P F450/550) Diesel) >> Pinpoint Test M: Fuel Pump Monitor/Control >> Test Procedure

Test Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Ford RV Cutaway, 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Econoline. However, it is still accessible from the selected car via links, so may be relevant.
  1. M1 PRELIMINARY DIAGNOSIS FOR DIAGNOSTIC TROUBLE CODES (DTCS) P0230, P0231, AND P0232 
    NOTE: For F-Super Duty, the fuel pump relay is internal to the central junction box (CJB).
    • Retrieve and record all DTCs.
    • Record the freeze frame data.
    • Clear the DTCs.
    • Carry out the self-test.

    Are any DTCs retrieved? 

    Yes No
    For DTC P0230, (F-Super Duty),
    GO to  M2.
    For DTC P0230, (E-Series),
    GO to  M3.
    For DTC P0231, GO to  M9.
    For DTC P0232, GO to  M15.    		 UNABLE to duplicate the condition. CHECK for a loose connection, and damaged or corroded terminals. WIGGLE the harness attempting to recreate the concern. REPAIR as necessary. REFER to SYMPTOM CHARTS , if a driveability concern exists.
  2. M2 DIAGNOSTIC TROUBLE CODE (DTC) P0230 
    • Possible causes:
      • fuel pump relay (internal to the CJB)
      • circuitry
      • PCM
    • Key in OFF position.
    • CJB-f connector disconnected.
    • Key ON, engine OFF.
    • Measure the voltage between:
      ( + ) CJB-f Connector, Component Side ( - )
      FP - Pin 10 Ground

    Is the voltage greater than 10.5 V? 

    Yes No
    GO to  M6. INSTALL a new CJB. CLEAR the DTCs.
    REPEAT the self-test.
  3. M3 CHECK THE FUEL PUMP RELAY VOLTAGE CIRCUIT 
    NOTE: Refer to the SYSTEM WIRING DIAGRAMS for the fuel pump relay coil pin locations.
    • Possible causes:
      • fuel pump relay
      • circuitry
      • PCM
    • Key in OFF position.
    • FP Relay connector disconnected.
    • Key ON, engine OFF.
    • Measure the voltage between:
      ( + ) FP Relay Connector, Harness Side ( - )
      VPWR - Pin 2 Ground

    Is the voltage greater than 10.5 V? 

    Yes No
    GO to  M4. REPAIR the open circuit. CLEAR the DTCs.
    REPEAT the self-test.
  4. M4 CHECK THE FUEL PUMP RELAY 
    • Carry out the fuel pump relay component test. Refer to COMPONENT TESTING .

    Does the fuel pump relay pass the component test? 

    Yes No
    For E-Series, GO to  M5. INSTALL a new FP. CLEAR the DTCs.
    For F-Super Duty, GO to  M6. REPEAT the self-test.
  5. M5 CHECK THE FUEL PUMP RELAY CONTROL CIRCUIT FOR AN OPEN (E-SERIES) 
    NOTE: Refer to the SYSTEM WIRING DIAGRAMS for the fuel pump relay coil pin locations.
    • Key in OFF position.
    • PCM connector disconnected.
    • Measure the resistance between:
      ( + ) FP Relay Connector, Harness Side ( - ) PCM Connector, Harness Side
      FP - Pin 1 FP - Pin B5

    Is the resistance less than 5 ohms? 

    Yes No
    GO to  M7. REPAIR the open circuit. CLEAR the DTCs.
    REPEAT the self-test.
  6. M6 CHECK THE FUEL PUMP RELAY CONTROL CIRCUIT FOR AN OPEN (F-SUPER DUTY) 
    NOTE: Refer to the SYSTEM WIRING DIAGRAMS for the fuel pump relay coil pin locations.
    • Key in OFF position.
    • PCM connector disconnected.
    • Measure the resistance between:
      ( + ) CJB-f Connector, Harness Side ( - ) PCM Connector, Harness Side
      FP - Pin 10 FP - Pin B5

    Is the resistance less than 5 ohms? 

    Yes No
    GO to  M7. REPAIR the open circuit. CLEAR the DTCs.
    REPEAT the self-test.
  7. M7 CHECK THE FUEL PUMP RELAY CONTROL CIRCUIT FOR A SHORT TO GROUND 
    • Measure the resistance between:
      ( + ) PCM Connector, Harness Side ( - )
      FP - Pin B5 Ground

    Is the resistance greater than 10K ohms? 

    Yes No
    GO to  M8. REPAIR the short circuit. CLEAR the DTCs.
    REPEAT the self-test.
  8. M8 CHECK THE FUEL PUMP RELAY CONTROL CIRCUIT FOR A SHORT TO VOLTAGE 
    • Key ON, engine OFF.
    • Measure the voltage between:
      ( + ) PCM Connector, Harness Side ( - )
      FP - Pin B5 Ground

    Is any voltage indicated? 

    Yes No
    REPAIR the short circuit. CLEAR the DTCs.
    REPEAT the self-test.    		 GO to  M22.
  9. M9 DIAGNOSTIC TROUBLE CODE (DTC) P0231 
    NOTE: Diagnose and repair DTC P0230 before addressing DTC P0231.
    • Possible causes:
      • inertia fuel shutoff (IFS) switch
      • fuel pump monitor circuit open
      • fuel pump relay
    • Key in OFF position.
    • IFS Switch connector disconnected.
    • Measure the resistance between:
      ( + ) IFS Switch Connector, Component Side ( - ) IFS Switch Connector, Component Side
      B+ - Pin 2 IS - Pin 1

    Is the resistance less than 5 ohms? 

    Yes No
    GO to  M10. INSTALL a new IFS switch. CLEAR the DTCs.
    REPEAT the self-test.
  10. M10 CHECK THE FUEL PUMP VOLTAGE 
    • Connect a non-powered test lamp between:
      ( + ) IFS Switch Connector, Harness Side ( - )
      B+ - Pin 2 Ground
    • Key ON, engine OFF.

    Does the test lamp illuminate for approximately 20 seconds? 

    Yes No
    GO to  M14. For E-Series, GO to  M12.
    For F-Super Duty, GO to  M11.
  11. M11 CHECK THE FUEL PUMP VOLTAGE CIRCUIT FOR AN OPEN 
    • Key in OFF position.
    • CJB-a connector disconnected.
    • Measure the resistance between:
      ( + ) CJB-a Connector, Harness Side ( - ) IFS Switch Connector, Harness Side
      IS - Pin 22 B+ - Pin 2

    Is the resistance less than 5 ohms? 

    Yes No
    CHECK fuse. If OK, INSTALL a new CJB. REPAIR the open circuit. CLEAR the DTCs.
    CLEAR the DTCs. REPEAT the self-test. REPEAT the self-test.
  12. M12 CHECK THE FUEL PUMP RELAY POWER CIRCUIT FOR VOLTAGE 
    • Key in OFF position.
    • FP Relay connector disconnected.
    • Key ON, engine OFF.
    • Measure the voltage between:
      ( + ) FP Relay Connector, Harness Side ( - )
      B+ - Pin 3 Ground

    Is the voltage greater than 10.5 V? 

    Yes No
    GO to  M13. REPAIR the open circuit. CLEAR the DTCs.
    REPEAT the self-test.
  13. M13 CHECK THE FUEL PUMP RELAY 
    • Carry out the fuel pump relay component test. Refer to COMPONENT TESTING .

    Does the fuel pump relay pass the component test? 

    Yes No
    REPAIR the open circuit. CLEAR the DTCs. INSTALL a new FP relay. CLEAR the DTCs.
    REPEAT the self-test. REPEAT the self-test.
  14. M14 CHECK THE FUEL PUMP MONITOR CIRCUIT FOR AN OPEN 
    • Key in OFF position.
    • PCM connector disconnected.
    • Measure the resistance between:
      ( + ) IFS Switch Connector, Harness Side ( - ) PCM Connector, Harness Side
      IS - Pin 1 IS - Pin B19

    Is the resistance less than 5 ohms? 

    Yes No
    GO to  M22. REPAIR the open circuit. CLEAR the DTCs.
    REPEAT the self-test.
  15. M15 DIAGNOSTIC TROUBLE CODE (DTC) P0232 
    NOTE: Diagnose and repair DTC P0230 before addressing DTC P0232.
    • Possible causes:
      • fuel pump relay
      • fuel pump monitor circuit open or short to voltage
      • fuel pump ground circuit open
      • fuel pump
    • Key in OFF position.
    • CJB-a connector disconnected. (F-Super Duty)
    • FP Relay connector disconnected. (E-Series)
    • Key ON, engine OFF.

    Is the fuel pump on? 

    Yes No
    GO to  M16. GO to  M17.
  16. M16 CHECK THE FUEL PUMP MONITOR CIRCUIT FOR A SHORT TO VOLTAGE 
    • Key in OFF position.
    • PCM connector disconnected.
    • FP connector disconnected.
    • Key ON, engine OFF.
    • Measure the voltage between:
      ( + ) PCM Connector, Harness Side ( - )
      IS - Pin B19 Ground

    Is any voltage indicated? 

    Yes No
    REPAIR the short circuit. CLEAR the DTCs. CLEAR the DTCs. REPEAT the self-test. If the DTC P0232 is present again,
    REPEAT the self-test. GO to  M22.
  17. M17 CHECK THE FUEL PUMP GROUND FOR AN OPEN 
    • Key in OFF position.
    • FP connector disconnected.
    • Measure the resistance between:
      ( + ) FP Connector, Harness Side ( - )
      FPGND - Pin 2 Ground

    Is the resistance less than 5 ohms? 

    Yes No
    GO to  M18. REPAIR the open circuit. CLEAR the DTCs.
    REPEAT the self-test.
  18. M18 CHECK THE FUEL PUMP 
    • Measure the resistance between:
      ( + ) FP Connector, Component Side ( - ) FP Connector, Component Side
      FPPWR - Pin 1 FPGND - Pin 2

    Is the resistance less than 5 ohms? 

    Yes No
    GO to  M19. INSTALL a new FP. CLEAR the DTCs.
    REPEAT the self-test.
  19. M19 CHECK THE FUEL PUMP MONITOR CIRCUIT FOR AN OPEN 
    • PCM connector disconnected.
    • Measure the resistance between:
      ( + ) PCM Connector, Harness Side ( - ) FP Connector, Harness Side
      IS - Pin B19 FPPWR - Pin 1

    Is the resistance less than 5 ohms? 

    Yes No
    For E-Series, GO to  M20. REPAIR the open circuit. CLEAR the DTCs.
    For F-Super Duty, GO to  M21. REPEAT the self-test.
  20. M20 CHECK THE FUEL PUMP RELAY 
    • Carry out the fuel pump relay component test. Refer to COMPONENT TESTING .

    Does the fuel pump relay pass the component test? 

    Yes No
    CLEAR the DTCs and RETEST the system. If the DTC P0232 is present again, INSTALL a new FP relay. CLEAR the DTCs.
    GO to  M22. REPEAT the self-test.
  21. M21 CHECK THE CJB FUEL PUMP RELAY 
    • CJB-a connector connected.
    • Connect a 5 amp fused jumper wire between the following:
      Point A PCM Connector, Harness Side Point B
      FP - Pin B5 Ground
    • Measure the voltage between:
      ( + ) PCM Connector, Harness Side ( - )
      IS - Pin B19 Ground
    • Key ON, engine OFF.

    Is the voltage greater than 10 volts with the jumper installed and less than 1 volt with the jumper removed? 

    Yes No
    CLEAR the DTCs. REPEAT the self-test. If the DTC P0232 is present again, INSTALL a new CJB. CLEAR the DTCs.
    GO to  M22. REPEAT the self-test.
  22. M22 CHECK FOR CORRECT PCM OPERATION 
    • Disconnect all the PCM connectors.
    • Visually inspect for:
      • pushed out pins
      • corrosion
    • Connect all the PCM connectors and make sure they seat correctly.
    • Carry out the PCM self-test and verify the concern is still present.

    Is the concern still present? 

    Yes No
    INSTALL a new PCM. REFER to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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