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Home >> Ford >> 2009 >> RV Cutaway 6.0 P >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Pinpoint Tests- 6.0L Diesel Models >> Pinpoint Test AE: Unable To Activate Self-Test/Network Communication Error >> Test Procedure
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Test Procedure

  1. AE1 CARRY OUT A VEHICLE INSPECTION AND VERIFY THE SELF-TEST PROCEDURE 
    NOTE: The scan tool resets if battery voltage is less than 9.5 volts. If carrying out repeated self-tests, disable the glow plug control module (GPCM) and disregard the glow plug codes while the GPCM is disabled. If equipped with a power take-off (PTO) system, it must be disabled while carrying out the PCM self-tests.
    • Check the battery voltage.
    • Verify that the correct procedure was used to activate the self-test for the scan tool. Refer to DIAGNOSTIC METHODS .

    Was the correct self-test procedure used? 

    Yes No
    GO to  AE2. REFER to DIAGNOSTIC METHODS for the correct operating procedures.
  2. AE2 CARRY OUT THE NETWORK TEST 
    • Ignition ON, engine OFF.
    • Carry out the network test.

    Do all modules indicate pass? 

    Yes No
    REFER to PINPOINT TEST Q: INJECTION CONTROL PRESSURE (ICP) SENSOR . For only PCM indicates fail, GO to  AE3.
    For network test or all other modules indicates fail, REFER to the appropriate Module Communications Network to continue no response from the scan tool diagnosis.
  3. AE3 CHECK THE PCM VPWR CIRCUITS FOR VOLTAGE 
    • Ignition OFF.
    • PCM connector disconnected.
    • Ignition ON, engine OFF.
    • Measure the voltage between:
    (+) PCM Connector, Harness Side (-)
    VPWR - Pin B34, B46 Ground

    Are the voltages greater than 10.5 V? 

    Yes No
    GO to  AE4. GO to Pinpoint Test A .
  4. AE4 CHECK THE PWRGND CIRCUITS FOR AN OPEN 
    • Ignition OFF.
    • Measure the resistance between:
    (+) PCM Connector, Harness Side (-)
    PWRGND - Pin B10, B11, B23 Ground

    Are the resistances less than 5 ohms? 

    Yes No
    GO to  AE5. REPAIR the open circuit. CLEAR the DTCs.
    REPEAT the self-test.
  5. AE5 CHECK THE VREF CIRCUITS FOR A SHORT TO GROUND 
    • PCM connector disconnected.
    • Measure the resistance between:
    (+) PCM Connector, Harness Side (-)
    VREF - Pin B29, B45, E36 Ground

    Are the resistances greater than 10K ohms? 

    Yes No
    REFER to the appropriate Module Communications Network to continue no communication with the PCM diagnosis. REPAIR the short circuit. CLEAR the DTCs.
    REPEAT the self-test.
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