Normal Operation

The PSCM monitors various inputs and outputs of the 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.

This test generates a RVC for a new PSCM when directed to do so from pinpoint test. A RVC is required to order a new PSCM and to document billing for payment.

1. F1: CHECK AND RECORD THE LEFT FRONT AND RIGHT FRONT TIRE PRESSURES 
   • Check and record the left front and right front tire pressures.
   • Compare the recorded tire pressure readings with the information on the VC label.
   • Is the air pressure in the tires correct as indicated on the VC label? 

     Yes	No
     Go to  F2.	ADJUST the air pressure in the tires. Go to  F2.

2. F2: CHECK FOR UNLOADED STEERING RACK TRAVEL FEEL 
   • With the transmission in NEUTRAL, position the vehicle on a hoist. Refer to the Jacking and Lifting article
   • Ignition OFF.
   • Raise the vehicle until the front wheels no longer touch the ground.
   • Rotate the steering wheel from lock-to-lock and inspect the steering rack travel for the following:
     • Abnormal noises
     • Rough spots
     • Sticky spots
     • Tight spots
   • Is steering rack travel smooth and free of any abnormal noises, rough, sticky and tight spots? 

     Yes	No
     Go to  F4.	Go to  F3.

3. F3: INSPECT THE INNER TIE RODS AND STEERING RACK FOR CORROSION 
   NOTE: When installing new bellows boots and clamps apply new lubricant as instructed to prevent water contamination or damage may result to the EPAS gear. For complete information refer to the Tie Rod Removal and Installation procedure in the Power Steering article.
   • Remove the outer tie rod and bellows boot. Refer to the Power Steering article.
   • The following inspection must be carried out on BOTH sides of the steering rack:
     • Turn the steering wheel in one direction all the way until it stops to expose the steering rack.
     • Inspect the rack, inner tie rod and gear housing for rust, moisture, corrosion and other signs of harmful contamination.
   • Is the rack, inner tie rod and gear housing free of moisture, rust, corrosion and other harmful contamination? 

     Yes	No
     The condition which caused the concern is not present at this time. INSTALL new bellows boots with new clamps and install the removed outer tie rods. REFER to the Power Steering article. ADJUST the front toe setting. REFER to the Suspension System General Information article.	INSTALL a new EPAS gear. REFER to the Power Steering article. ORDER a replacement PSCM and INCLUDE the RVC on the form. If this is a Ford paid repair, INCLUDE the RVC on the warranty claim form. When complete, SELECT the "X" in the top right corner to CLOSE this procedure and RETURN to the PTS web site.

4. F4: 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.