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. BB1: RETRIEVE PSCM DTCS 
   • Ignition ON, engine OFF.

   Carry out the PSCM self-test.

   • Is DTC B1 D23:XX present and active in the PSCM? 

     Yes	No
     Go to  BB2.	If DTC B1D23:XX is not currently present and active in the PSCM, DISCONTINUE this test.

2. BB2: VERIFY THE CONDITION OF THE PSCM HOUSING 
   • Inspect the PSCM housing for damage and cracks large enough to allow access inside.
   • Is the PSCM housing free from damage or cracks? 

     Yes

     No

     Go to  BB3.

     INSTALL a new EPAS gear. CHECK OASIS for any applicable service articles; TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new EPAS gear. REFER to the Power Steering article. ORDER a replacement EPAS gear and INCLUDE the RVC on the form. If this is a Ford paid repair, INCLUDE the RVC on the warranty claim form.

3. BB3: VERIFY CONDITION OF NEARBY HOT COMPONENTS 
   • Inspect nearby hot components and determine:
     • if any heat shields are missing or damaged.
     • if any hot components are damaged.
   • Are nearby hot components free from damage and are all EPAS gear heat shields intact? 

     Yes	No
     Go to  BB4.	REPAIR hot components and INSTALL new heat shields as necessary.

4. BB4: 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 EPAS temperatures (sand, deep soil, etc.).
   • Was the customer performing any high temperature driving maneuvers similar to those mentioned above? 

     Yes	No
     PSCM DTC B1D23:XX 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. A heavy load is defined as 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, steering column or steering actuator replacement.