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Test Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2005 Ford RV Cutaway, 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Excursion. However, it is still accessible from the selected car via links, so may be relevant.
  1. A1 DIAGNOSTIC TROUBLE CODES (DTCS) P0562 OR P0563 
    NOTE: DTC P0563 may set during a 24-volt jump start.

    DTC P0562 may set during crank with a low battery condition.

    • Check the battery and charging system voltages. Refer to CHARGING SYSTEM - GENERAL INFORMATION .

    Are the battery and charging system voltages within specifications? 

    Yes No
    GO to  A2. REPAIR as necessary. REFER to CHARGING SYSTEM - GENERAL INFORMATION CLEAR the DTCs. REPEAT the self-test.
  2. A2 CHECK THE PCM RELAY VOLTAGE CIRCUITS 
    NOTE: For E-Series, the PCM diode is internal to the battery junction box (BJB).

    Refer to SYSTEM WIRING DIAGRAMS for the PCM relay coil pin locations.

    • Key OFF.
    • Disconnect the PCM relay.
    • Key ON, engine OFF.
    • Measure the voltage between the PCM relay battery voltage circuit pin 30, harness side and ground; and measure the voltage between the PCM relay coil power circuit, harness side and ground.

    Are the voltages greater than 10.5 volts? 

    Yes No
    GO to  A3. REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
  3. A3 CHECK THE PCM RELAY COIL GROUND CIRCUIT 
    NOTE: For F-Super Duty/Excursion, the PCM diode is internal to the central junction box (CJB).

    Refer to SYSTEM WIRING DIAGRAMS for the PCM relay coil pin locations.

    • Connect a test lamp between the PCM relay pin 30, harness side and the PCM relay coil ground circuit, harness side.

    Is the test lamp illuminated? 

    Yes No
    GO to  A4. REPAIR the open ground circuit. CLEAR the DTCs. REPEAT the self-test.
  4. A4 CHECK THE PCM RELAY 
    • Carry out the PCM relay component test. Refer to COMPONENT TESTING .

    Does the PCM relay pass the component test? 

    Yes No
    GO to  A5. INSTALL a new PCM relay. CLEAR the DTCs. REPEAT the self-test.
  5. A5 CHECK THE PCM POWER CIRCUITS FOR AN OPEN 
    • Key OFF.
    • Disconnect the PCM body harness connector.
    • Measure the resistance between the PCM relay pin 87, harness side and the PCM body harness connector pins 34 and 46, harness side.

    Are the resistances less than 5 ohms? 

    Yes No
    GO to  A6. REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
  6. A6 CHECK THE PCM GROUND CIRCUITS FOR AN OPEN 
    • Measure the resistance between the PCM body harness connector pins 10, 11, and 23, harness side and ground.

    Are the resistances less than 5 ohms? 

    Yes No
    CLEAR the DTCs. REPEAT the self-test. If DTC P0562 or P0563 is present again, INSTALL a new PCM. REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
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