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Home >> Ford >> 2024 >> E-Transit Cutaway >> Repair and Diagnosis >> External Pages >> Different car >> Section 148 (Fuel Charging And Controls - 3.5L ECOBOOST (235KW/320PS)) >> Diagnosis And Testing >> High-Pressure Fuel System >> Pinpoint Tests >> Pinpoint Test F: Fuel Rail Pressure Too Low - Engine Cranking (Bank 1) DTC (Diagnostic Trouble Code) P006C:00 >> Pinpoint Test F: Fuel Rail Pressure Too Low - Engine Cranking (Bank 1) DTC (Diagnostic Trouble Code) P006C:00

Pinpoint Test F: Fuel Rail Pressure Too Low - Engine Cranking (Bank 1) DTC (Diagnostic Trouble Code) P006C:00

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  1. WARNING: Before working on or disconnecting any of the fuel tubes or fuel system components, relieve the fuel system pressure to prevent accidental spraying of fuel. Fuel in the fuel system remains under high pressure, even when the engine is not running. Failure to follow this instruction may result in serious personal injury.
    WARNING: Do not smoke, carry lighted tobacco or have an open flame of any type when working on or near any fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in serious personal injury.
    WARNING: Do not carry personal electronic devices such as cell phones, pagers or audio equipment of any type when working on or near any fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in serious personal injury.
    WARNING: When handling fuel, always observe fuel handling precautions and be prepared in the event of fuel spillage. Spilled fuel may be ignited by hot vehicle components or other ignition sources. Failure to follow these instructions may result in serious personal injury.
    WARNING: Clean all fuel residue from the engine compartment. If not removed, fuel residue may ignite when the engine is returned to operation. Failure to follow this instruction may result in serious personal injury.
    WARNING: Fuel may remain pressurized in some fuel lines after the Fuel System Pressure Release procedure. Wear safety gloves and a face shield when disconnecting pressure lines to avoid skin and eye contact. Failure to follow this instruction may result in serious personal injury.
    NOTE: With the engine running, the FRP PID value may be 48-70 kPa (7-10 psi) higher than a fuel pressure reading taken with a mechanical gauge.

    Refer to Electronic Engine Controls - 3. 5L GTDI for schematic and connector information.

    Normal Operation and Fault Conditions 

    Refer to the DTC Fault Trigger Conditions.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    PCM P00C6:00 Fuel Rail Pressure Too Low - Engine Cranking (Bank 1): No Sub Type Information Sets when the PCM detects the high pressure fuel system cannot achieve the threshold within certain time and crankshaft rotation limits; the PCM attempts to start the engine at fuel pump assembly pressure. The high pressure fuel system must reach a minimum pressure threshold before the engine can be started. Diagnose any FRP and fuel volume regulator (FVR) circuit Diagnostic Trouble Codes (DTC s) first.

    Possible Causes 

    • Fuel injection pump circuitry concern
    • Low fuel level
    • Fuel filter
    • FRP sensor
    • Fuel pump module
    • Fuel injection pump (9350)
    • PCM (12A650)

    NOTE: Do not apply battery voltage across the fuel injection pump circuits. Damage to the fuel volume regulator solenoid may result.

  2. F1 FUEL LEVEL CHECK

    KOEO

    • Verify the FLI PID value is greater than 15%. A fuel level below 15% may set the DTC with no other concerns present.

    • Access the PCM and monitor the

      Access the PCM and monitor the FLI (%) PID

    Is the fuel level greater than 15%? 

    Yes  GO to  F2
    No  Add sufficient fuel the increase the level to above 15%. CLEAR THE DTC S. REPEAT the self test.

  3. F2 CHECK THE PCM (POWERTRAIN CONTROL MODULE) FOR DIAGNOSTIC TROUBLE CODES (DTC S)

    NOTE: Retrieve and record the freeze frame data for the DTC before clearing the PCM DTC s.

    NOTE: Diagnose and repair all circuit DTC s before diagnosing P0087 or P0088

    KOEO

    • Using a diagnostic scan tool, clear all diagnostic trouble codes (DTC s) from the PCM.

    • Using a diagnostic scan tool, retrieve all diagnostic trouble codes (DTC s) from the PCM.

    Is DTC P00C6 present? 

    Yes  For DTC P00C6 GO to  F3
    No  No fault found. The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

  4. F3 CHECK FOR LOW PRESSURE FUEL SYSTEM LEAKDOWN

    • Ignition OFF.

    • Mechanical fuel pressure gauge connected.

    KOEO

    Access the PCM and monitor the FLP (kPa) PID

    • Cycle the ignition several times to fully charge the fuel system.

    • Ignition OFF. Wait 15 minutes.

    Is the low pressure fuel system pressure greater than 310 kPa (45 psi)? 

    Yes  GO to  F5
    No  GO to  F4

  5. F4 FUEL SYSTEM INTEGRITY CHECK

    • Visually inspect the complete fuel delivery system for damage and leakage

    • Check the following

      1. - fuel lines and connections
      2. - fuel tank
      3. - fuel rail and injectors
      4. - damaged electrical connectors
      5. - electrical connectors not fully engaged

    • Verify the following

      1. the vehicle has followed the maintenance schedule. A new fuel filter should have been installed within the last 48, 280 km (30, 000 miles) (vehicles with inline fuel filter).
      2. the battery is fully charged.
      3. clean sufficient fuel.

    Is a concern present? 

    Yes  REPAIR as necessary. CLEAR THE DTC S. REPEAT the self test.
    No  REFER to: Fuel Tank and Lines - System Operation and Component Description

  6. F5 CHECK THE FUEL INJECTION PUMP/FUEL VOLUME REGULATOR RESISTANCE

    • Ignition OFF.

    • Disconnect Fuel Injection Pump C119.

    • Inspect the connector for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.

    • Measure
      Positive Lead Measurement / Action Negative Lead
      C119 Pin 1 Component Side
      GFD836681Courtesy of FORD MOTOR COMPANY
      		 C119 Pin 2 Component Side

    Is the resistance value between 0. 3 Ohms and 3. 1 Ohms? 

    Yes  GO to  F6
    No  INSTALL a new Fuel Injection Pump. REFER to the fuel system WARNING information at the beginning of the Pinpoint Test. CLEAR the PCM DTC REPEAT the self test.

  7. F6 CHECK THE FVR AND FVRRTN CIRCUITS FOR AN OPEN

    • Inspect the connector for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.

    • Measure
      Positive Lead Measurement / Action Negative Lead
      Fuel Injection Pump/Fuel Volume Regulator. C119 Pin 1
      GFD836681Courtesy of FORD MOTOR COMPANY
      		 PCM C1551E Pin E86 FVR
      Fuel Injection Pump/Fuel Volume Regulator. C119 Pin 2
      GFD836681Courtesy of FORD MOTOR COMPANY
      		 PCM C1551E Pin E107 FVRRTN

    Are the resistances less than 3 Ohms? 

    Yes  GO to  F7
    No  REPAIR the open circuit. CLEAR the PCM DTC REPEAT the self test.

  8. F7 FUEL INJECTION PUMP/FUEL VOLUME REGULATOR HARNESS SHORT CIRCUIT TO GROUND CHECK

    • Ignition OFF.

    • Measure
      Positive Lead Measurement / Action Negative Lead
      Fuel Volume Regulator C119 Pin 1
      GFD836681Courtesy of FORD MOTOR COMPANY
      		 Ground
      Fuel Volume Regulator Return C119 Pin 2
      GFD836681Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10k Ohms? 

    Yes  GO to  F8
    No  REPAIR the short circuit to ground. CLEAR the PCM DTC REPEAT the self test.

  9. F8 FUEL INJECTION PUMP/FUEL VOLUME REGULATOR HARNESS SHORT CIRCUIT PIN TO PIN

    • Measure
      Positive Lead Measurement / Action Negative Lead
      C119 Pin 1
      GFD836681Courtesy of FORD MOTOR COMPANY
      		 C119 Pin 2

    Is the resistance greater than 10k Ohms? 

    Yes  GO to  F9
    No  REPAIR the short circuit. CLEAR the PCM DTC REPEAT the self test.

  10. F9 CHECK THE FUEL INJECTION PUMP/FUEL VOLUME REGULATOR FOR SHORT CIRCUIT TO POWER

    • Ignition OFF.

    • Measure
      Positive Lead Measurement / Action Negative Lead
      C119 Pin 1
      GFD836682Courtesy of FORD MOTOR COMPANY
      		 Ground
      C119 Pin 2
      GFD836682Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is a voltage present? 

    Yes  REPAIR the short circuit to power. CLEAR the PCM DTC REPEAT the self test.
    No  GO to  F10

  11. F10 CHECK FOR CORRECT FUEL INJECTION PUMP OPERATION

    • Visually inspect the Fuel Injection Pump/Fuel Volume Regulator connector C119. Inspect the connector for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.

    • Visually inspect the PCM connector C1551E. Inspect the connector for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.

    • Connect C119 Make sure the connector is correctly seated..

    • Connect C1551E Make sure the connector is correctly seated..

    KOEO

    • Using a diagnostic scan tool, clear all diagnostic trouble codes (DTC s) from the PCM.

    • KOER.

    • Wait 15 Seconds.

    Is DTC P00C6 Still Present? 

    Yes  INSTALL a new Fuel Injection Pump. REFER to the fuel system WARNING information at the beginning of the Pinpoint Test. CLEAR the PCM DTC REPEAT the self test.
    No  No fault found. The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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