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HOMESERVICE MANUALSFORD2021TRANSIT-350 HD BASE, VAN CARGO EXTENDED, 3.5L ENG VIN 8, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 746 (ENGINE CONTROLS - PINPOINT TESTS (DIESEL) - FAULT CODE INDEX, PINPOINT TESTS A - AN)PINPOINT TESTS AN: POWER TAKE OFF (PTO) CONTROLTEST PROCEDURE
2021 Ford Transit-350 HD Base, Van Cargo Extended, 3.5L Eng VIN 8, AWD

Test Procedure

2021 Ford Transit-350 HD Base, Van Cargo Extended, 3.5L Eng VIN 8, AWDSECTION Test Procedure
WARNING: This page is about a different car, the 2020 Ford F-550 Super Duty, 2020 Ford F-450 Super Duty, 2020 Ford F-350 Super Duty, 2020 Ford F-250 Super Duty, and 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
  1. AN1 VERIFY CORRECT PTO OPERATION 
    • Ignition OFF.
    • Disconnect the PTO system or auxiliary idle control.
    • Ignition ON, engine running.

    Is a concern present? 

    Yes No
    GO to  AN2. REFER to the Owner's Literature provided with the PTO system or auxiliary idle control to verify correct operating procedures, entry conditions, and diagnostic information.
  2. AN2 CHECK THE PTO INPUT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • PCM-B connector disconnected.
    • Ignition ON, engine OFF.
    • For F-650/750,
    • Measure the voltage between:
      (+) PCM-B Connector, Harness Side (-)
      PTO Ground
      PTO2 Ground
    • For F-Series Super Duty,
    • Measure the voltage between:
      (+) PCM-T Connector, Harness Side (-)
      PTO - Pin 19 Ground
      PTO2 - Pin 18 Ground

    Is any voltage present? 

    Yes No
    REPAIR the short circuit. Clear the PCM DTCs.
    REPEAT the self-test.    		 REFER to the Owner's Literature provided with the PTO system or auxiliary idle control to verify correct operating procedures, entry conditions, and diagnostic information.
    Clear the PCM DTCs. REPEAT the self-test.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.