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Home >> Ford >> 2011 >> Explorer Base, AWD, 6F55 >> Repair and Diagnosis (Single Page) >> Steering >> Electronic Steering >> Power Steering - Electronic Power Assist Steering (EPAS) >> Interactive Diagnostics >> Pinpoint Tests >> Pinpoint Test C: DTC U3000: Control Module - Signal Calculation Failure and Component Internal Failure >> Normal Operation
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Normal Operation

The power steering control module (PSCM) monitors various inputs and outputs of the electronic power assist steering (EPAS) system in order to keep the system operating at peak capacity. Information provided by sensors (steering torque, vehicle speed, vehicle travel distance, etc.) are all compared to programmed and learned information. Likewise, outputs like the motor and steering rack (travel) are tested against programmed and learned information.

NOTE: If a damaged bellows boot(s) was discovered during Inspection and Verification and this pinpoint test DOES NOT lead to the installation of a new EPAS gear or bellows boot(s), then go to PINPOINT TEST K  to address the damaged boot(s) before returning the vehicle to the customer.
  1. C1: CHECK PSCM DTCS 
    • Review the returned PSCM DTCs.
    • Is DTC U3000:96 present? 
      Yes No
      INSTALL a new EPAS gear.
      REFER to Steering Gear  .      		 Go to C2.
  2. C2: VERIFY PRESENCE OF EPAS GEAR HEAT SHIELD 
    • Make sure the EPAS gear heat shield is present and installed correctly. Refer to Steering Gear  .
    • Is the heat shield present and is it installed correctly? 
      Yes No
      Go to C3. REINSTALL the heat shield or INSTALL a new heat shield as necessary.
      Go to C3.
  3. C3: TEST DRIVE TO CHECK FOR RETURNING DTCS 
    • Clear the PSCM DTCs.
    • Cycle the ignition to OFF and then back to RUN.
      NOTE: Always drive the vehicle in a safe manner according to driving conditions and obey all traffic laws.
    • Test drive the vehicle in the following manner:
      • With the engine running/ready, stop the vehicle on an unsealed concrete or asphalt surface (in order to provide adequate friction for a thorough test).
      • With the vehicle in gear and the brakes applied, turn the steering wheel lock-to-lock.
      • Return the steering wheel to the center position and move the vehicle forward approximately 32 cm (1 ft).
      • With the vehicle in gear and the brakes applied, turn the steering wheel lock-to-lock.
      • Return the steering wheel to the center position and move the vehicle forward approximately 32 cm (1 ft).
      • With the vehicle in gear and the brakes applied, turn the steering wheel lock-to-lock.
      NOTE: The next portion of the test drive will require the vehicle to be driven at highway speeds.
      NOTE: The test period is a cumulative time of 10 minutes. Stopping, going slower than 72 km/h (45 mph) or faster that 96 km/h (60 mph) will not affect the test as long as a total time of 10 minutes is spent between 72-96 km/h (45-60 mph) with at least 4 lane changes during that time/speed window.
    • Continue test driving the vehicle in the following manner:
      • Bring the vehicle to a minimum speed of 72 km/h (45 mph), maximum of 96 km/h (60 mph).
      • Maintain that speed for at least 10 minutes.
      • During this 10-minute time period, make a minimum of 4 lane changes or turns that achieve a steering wheel angle of at least 20 degrees.
      • The test drive is complete.
    • Press Read Vehicle Information button to retrieve DTC s from the vehicle.
    NOTE: DTCs may be displayed from previous diagnostic actions.

    Is DTC U3000:61 and/or U3000:96 present? 

    Yes No
    INSTALL a new EPAS gear.
    Refer to Steering Gear  .    		 The condition set the DTC is not present at this time.
    RETURN the vehicle to the customer.
    For all other PSCM DTCs, REFER to the DTC Index - Power Steering Control Module (PSCM) .
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