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Test Procedure

WARNING: This page is about a different car, the 2009 Ford RV Cutaway, 2009 Ford Econoline, 2009 Ford E450 Super Duty, and 2009 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
  1. R1 PRELIMINARY DIAGNOSIS FOR DIAGNOSTIC TROUBLE CODE (DTC) P2623 
    NOTE: This DTC does not set during crank mode.
    • Carry out a visual inspection.
    • Retrieve and record all DTCs.
    • Record the freeze frame data.
    • Clear the DTCs.
    • Carry out the KOEO and KOER self-test.

    Is DTC P2623 present? 

    Yes No
    GO to  R2. 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 NO DTCS PRESENT SYMPTOM CHART INDEX , if a driveability concern exists.
  2. R2 CHECK THE IPR SOLENOID RESISTANCE 
    • Ignition OFF.
    • IPR Solenoid connector disconnected.
    • Measure the resistance between:
    (+) IPR Solenoid Connector, Component Side (-) IPR Solenoid Connector, Component Side
    VPWR - Pin 1 IPR - Pin 2

    Is the resistance between 3 - 15 ohms? 

    Yes No
    GO to  R3. INSTALL a new IPR solenoid. REFER to the appropriate, Fuel Charging and Controls.
    CLEAR the DTCs. REPEAT the self-test.
  3. R3 CHECK THE IPR SOLENOID VOLTAGE 
    • Ignition ON, engine OFF.
    • Measure the voltage between:
    (+) IPR Solenoid Connector, Harness Side (-)
    VPWR - Pin 1 Ground

    Is the voltage greater than 10.5 V? 

    Yes No
    GO to  R4. REPAIR the open circuit. CLEAR the DTCs.
    REPEAT the self-test.
  4. R4 CHECK THE IPR CONTROL CIRCUIT FOR A SHORT TO POWER 
    • Ignition OFF.
    • PCM connector disconnected.
    • Ignition ON, engine OFF.
    • Measure the voltage between:
    (+) IPR Solenoid Connector, Harness Side (-)
    IPR - Pin 2 Ground

    Is any voltage indicated? 

    Yes No
    REPAIR the short circuit. CLEAR the DTCs.
    REPEAT the self-test.    		 GO to  R5.
  5. R5 CHECK THE IPR CONTROL CIRCUIT FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Measure the resistance between:
    (+) IPR Solenoid Connector, Harness Side (-)
    IPR - Pin 2 Ground

    Is the resistance greater than 10K ohms? 

    Yes No
    GO to  R6. REPAIR the short circuit. CLEAR the DTCs.
    REPEAT the self-test.
  6. R6 CHECK THE IPR CONTROL CIRCUIT FOR AN OPEN 
    • Measure the resistance between:
    (+) PCM Connector, Harness Side (-) IPR Solenoid Connector, Harness Side
    IPR - Pin E2 IPR - Pin 2

    Is the resistance less than 5 ohms? 

    Yes No
    GO to  R7. REPAIR the open circuit. CLEAR the DTCs.
    REPEAT the self-test.
  7. R7 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) , Programming the VID Block for a Replacement PCM. The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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