PSCM Circuit Information

Refer to the Power Steering Controls wiring diagrams for schematic and connector information. Refer to Steering GSB for additional connector and wiring inspection tips.

1. BE1: VERIFY STEERING TYPE 
   • This pinpoint test is applicable to EPAS vehicles only. It DOES NOT apply to HPAS vehicles equipped with an electric steering actuator.
   • Inspect the vehicle and determine if the steering system is EPAS or HPAS with an electric steering actuator.
     • The presence of a power steering pump, hydraulic hoses or tubes indicates a HPAS system.
   • Is this vehicle equipped with EPAS? 

     Yes	No
     Go to  BE2.	GO to PINPOINT TEST BN .

2. BE2: RETRIEVE PSCM DTCS 
   • Ignition ON, engine running.

   Carry out the PSCM self-test.

   • Is DTC U3000:4B Control Module: Over Temperature present and active in the PSCM? 

     Yes	No
     Go to  BE3.	If DTC U3000:4B is not present and active in the PSCM, DISCONTINUE this test.

3. BE3: VERIFY THE CONDITION OF THE PSCM HOUSING 
   • Ignition OFF.
     NOTE: If equipped, the knee air bag module must be removed to gain access to the EPAS electrical connectors. REFER to the Supplemental Restraint System article for additional information.
   • Inspect the steering column housing for damage and cracks large enough to allow access inside the steering column housing.
   • Is the steering column housing free from damage or cracks? 

     Yes	No
     Go to  BE4.	INSTALL a new EPAS steering column. REFER to the Steering Column article. ORDER a replacement EPAS column and INCLUDE the RVC on the form. If this is a Ford paid repair, INCLUDE the RVC on the warranty claim form.

4. BE4: VERIFY DRIVING CONDITIONS 
   • Verify if the customer was towing for long distances, towing in hot weather, performing a high number of parking lot maneuvers or any other maneuvers leading to higher steering system temperatures (sand, deep soil, etc.).
   • Was the customer performing any high temperature driving maneuvers similar to those mentioned above? 

     Yes

     No

     PSCM DTC U3000:4B may have been set due to these driving conditions. ADVISE the customer high ambient temperatures or heavy loads on the EPAS system cause this DTC to set, resulting in higher than usual steering effort. An example of a heavy load would be multiple parking lot maneuvers over a short duration of time with low tire pressure or towing for long distances followed by multiple parking maneuvers.

     The condition causing the DTC to set is not present at this time and may have set due to driving or environmental conditions. The repair is complete. Overheat DTCs do not require a steering gear replacement.