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Test Procedure

WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. AE1 CARRY OUT A VEHICLE INSPECTION AND VERIFY THE SELF-TEST PROCEDURE 
    NOTE: If the self-test or communication concern occurred after a failed or an aborted reprogram, the module may be blank. Attempt to reprogram the module again before continuing with this pinpoint test.
    • Visually inspect the following for obvious signs of damage:
      • harness circuits
      • electrical connections
    • Verify that the correct procedure was used to activate the self-test for the scan tool. Refer to SCAN TOOL SETUP AND FUNCTIONALITY .

    Was the correct self-test procedure used? 

    Yes No
    GO to  AE2. REFER to SCAN TOOL SETUP AND FUNCTIONALITY .
  2. AE2 CARRY OUT THE NETWORK TEST 
    NOTE: When using Integrated Diagnostic System (IDS), the scan tool attempts to communicate with the PCM first. After establishing communication with the PCM, the scan tool then attempts to communicate with all modules on the vehicle. If an IDS session cannot be established, IDS may state no communication can be established with the PCM:
    • choose No when the scan tool prompts whether or not to retry communication.
    • enter a PCM part number, tear tag or calibration number to identify the vehicle and start a session. The PCM part number and 4-character tear tag are located on the PCM.
    • Ignition ON, engine OFF.
    • Carry out the network test.

    Do all modules indicate pass? 

    Yes No
    For DTCs U0073 or U0074, GO to  AE7.
    For DTC U0101, GO to  AE8.
    For DTC U0106, GO to  AE9.
    For DTC U0121, GO to  AE10.
    For DTC U0140, GO to  AE11.
    For DTC U0151, GO to  AE12.
    For DTC U0155, GO to  AE13.
    For DTC U0212, GO to  AE14.
    For DTC U0307, GO to  AE15.
    For DTC U0407, GO to  AE16.
    For DTC U0418, GO to  AE17.
    For DTC U041E, GO to  AE18.
    For DTC U0452, GO to  AE19.
    For all others, REFER to SYMPTOM CHARTS , GO to PINPOINT TEST QT , to continue diagnosis.    		 If only PCM indicates fail, GO to  AE3.
    For network test or all other modules indicate fail, REFER to the appropriate Module Communications Network article to diagnose the PCM does not respond to the scan tool symptom.
  3. AE3 CHECK THE VREF CIRCUIT FOR VOLTAGE 
    NOTE: PCM voltage and ground can be determined by measuring VREF voltage at a sensor.
    • Ignition OFF.
    • EGR Valve connector disconnected.
    • Ignition ON, engine OFF.
    • Measure the voltage between:
      (+) EGR Valve Connector, Harness Side (-) EGR Valve Connector, Harness Side
      VREF - Pin 6 SIGRTN - Pin 4

    Is the voltage between 4.5 - 5.5 V? 

    Yes No
    REFER to the appropriate Module Communications Network article to diagnose the PCM does not respond to the scan tool symptom. GO to  AE4.
  4. AE4 CHECK THE ISP-R CIRCUIT FOR VOLTAGE 
    • Ignition OFF.
    • PCM-B connector disconnected.
    • Ignition ON, engine OFF.
    • Measure the voltage between:
      (+) PCM-B Connector, Harness Side (-)
      ISP-R - Pin 42 Ground

    Is any voltage present? 

    Yes No
    GO to  AE5. REPAIR the open circuit. Clear the PCM DTCs.
    REPEAT the self-test.
  5. AE5 CHECK THE PCM VPWR CIRCUITS FOR VOLTAGE 
    • Ignition OFF.
    • PCM-B connector disconnected.
    • Connect a 5 amp fused jumper wire between the following:
      Point A PCM-B Connector, Harness Side Point B
      PCMRC - Pin 38 Ground
    • Ignition ON, engine OFF.
    • Measure the voltage between:
      (+) PCM-B Connector, Harness Side (-)
      VPWR - Pin 67, 68, 69 Ground

    Is any voltage present? 

    Yes No
    GO to  AE6. GO to Pinpoint Test A .
  6. AE6 CHECK THE PWRGND CIRCUITS FOR AN OPEN 
    • Ignition OFF.
    • Measure the resistance between:
      (+) PCM-B Connector, Harness Side (-)
      PWRGND - Pin 70, 71, 72, 73, 74 Ground

    Are the resistances less than 5 ohms? 

    Yes No
    GO to  AE20. REPAIR the open circuit. Clear the PCM DTCs.
    REPEAT the self-test.
  7. AE7 DTCS U0073 OR U0074: CHECK FOR A CONTROL MODULE COMMUNICATION BUS A OR B OFF CONCERN 
    • Check for any other control module communication DTCs.
    • Check for other control module communication related symptoms.

    Is a concern present? 

    Yes No
    REFER to the appropriate Module Communications Network article, Inspection and Verification to continue diagnosis. GO to  AE20.
  8. AE8 DTC U0101: CHECK FOR A TRANSAXLE/TRANSMISSION CONTROL MODULE (TCM) CONCERN 
    Yes No
    REFER to the appropriate Automatic Transaxle/Transmission article, Diagnosis and Testing. GO to  AE20.
  9. AE9 DTC U0106: CHECK FOR A GLOW PLUG CONTROL MODULE (GPCM) CONCERN 
    • Check for any GPCM DTCs.
    • Check for other GPCM related symptoms.

    Is a concern present? 

    Yes No
    GO Pinpoint Test AF  . GO to  AE20.
  10. AE10 DTC U0121: CHECK FOR AN ANTI-LOCK BRAKE SYSTEM (ABS) MODULE CONCERN 
    • Check for any ABS module DTCs.
    • Check for other ABS module related symptoms.

    Is a concern present? 

    Yes No
    REFER to the appropriate Electronic Engine Controls article, DTC Charts. GO to  AE20.
  11. AE11 DTC U0140: CHECK FOR A BODY CONTROL MODULE (BCM) CONCERN 
    • Check for any BCM DTCs.
    • Check for other BCM related symptoms.

    Is a concern present? 

    Yes No
    REFER to the appropriate Electronic Engine Controls article, DTC Charts. GO to  AE20.
  12. AE12 DTC U0151: CHECK FOR A RESTRAINTS CONTROL MODULE (RCM) CONCERN 
    • Check for any RCM DTCs.
    • Check for other RCM related symptoms.

    Is a concern present? 

    Yes No
    REFER to the appropriate Electronic Engine Controls article, DTC Charts. GO to  AE20.
  13. AE13 DTC U0155: CHECK FOR AN INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE CONCERN 
    • Check for any IPC DTCs.
    • Check for other IPC control module related symptoms.

    Is a concern present? 

    Yes No
    REFER to the appropriate Electronic Engine Controls article, DTC Charts. GO to  AE20.
  14. AE14 DTC U0212: CHECK FOR A STEERING COLUMN CONTROL MODULE CONCERN 
    • Check for any steering column control module (SCCM) DTCs.
    • Check for other SCCM related symptoms.

    Is a concern present? 

    Yes No
    REFER to the appropriate Electronic Engine Controls article, DTC Charts. GO to  AE20.
  15. AE15 DTC U0307: SOFTWARE INCOMPATIBILITY WITH GLOW PLUG CONTROL MODULE 
    • Check for any glow plug control module GPCM DTCs.
    • Check for other GPCM related symptoms.

    Is a concern present? 

    Yes No
    GO Pinpoint Test AF  . GO to  AE20.
  16. AE16 DTC U0407: INVALID DATA RECEIVED FROM GPCM 
    • Check for other GPCM related symptoms.
    • Check for other GPCM related symptoms.

    Is a concern present? 

    Yes No
    GO Pinpoint Test AF  . GO to  AE20.
  17. AE17 DTC U0418: INVALID DATA RECEIVED FROM BRAKE SYSTEM CONTROL MODULE 
    • Check for any anti-lock brake system (ABS) DTCs.
    • Check for other ABS related symptoms.

    Is a concern present? 

    Yes No
    REFER to the appropriate Vehicle Dynamic Systems article, Inspection and Verification to continue diagnosis. GO to  AE20.
  18. AE18 DTC U041E: INVALID DATA RECEIVED FROM ALL WHEEL DRIVE CONTROL MODULE 
    • Check for any 4X4 control module (4X4) DTCs.
    • Check for other 4X4 control module related symptoms.

    Is a concern present? 

    Yes No
    REFER to the appropriate Four Wheel Drive (4WD) Systems article, Inspection and Verification to continue diagnosis. GO to  AE20.
  19. AE19 DTC U0452: INVALID DATA RECEIVED FROM RESTRAINTS CONTROL MODULE 
    • Check for any restraints control module (RCM) DTCs.
    • Check for other RCM related symptoms.

    Is a concern present? 

    Yes No
    REFER to the appropriate Supplemental Restraint System article, Inspection and Verification to continue diagnosis. GO to  AE20.
  20. AE20 CHECK FOR CORRECT PCM OPERATION 
    • Disconnect all the PCM connectors.
    • Visually inspect for:
      • corrosion
      • pushed out pins
    • Connect all the PCM connectors and make sure they seat correctly.
    • Carry out the network test and verify the concern is still present.
    • Carry out the PCM self-test.
    • 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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