PSCM Circuit Information

Refer to Power Steering Controls wiring diagrams for schematic and connector information.

Refer to Steering GSB for additional connector and wiring inspection tips.

1. BF1: 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  BF2.	GO to PINPOINT TEST CC .

2. BF2: CHECK THE PSCM AND ABS MODULE SOFTWARE 
   NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI or the PMI may not have been carried out.
   • Check the vehicle service history for recent service actions related to the PSCM or the ABS module. If recent service history is found:
     • Verify the correct replacement module was installed. HVBOM may be used to verify correct part fitment.
     • Verify the configuration of replacement module was correct. Re-configure the module using as-built data if prior configuration is suspect.
     • Verify the module was not obtained from a like vehicle and installed into customer vehicle. Return the swapped module to source vehicle and obtain new replacement module.
   • Is the module software up to date? 
3. BF3: CHECK FOR PSCM DTCS C1B00:54 AND C1B00:95 
   • Ignition ON, engine running.

     Carry out the PSCM self-test.

   • Is DTC C1 B00:54 or C1 B00:95 currently present and active in the PSCM?

   Yes	No
   GO to PINPOINT TEST P .	For all other PSCM C1 B00:xx DTCs, Go to  BF4. If there are no C1B00:XX DTCs currently present and active in the PSCM, DISCONTINUE this pinpoint test and REFER to the PSCM DTC Chart for direction.

4. BF4: INSPECT THE EPAS WIRING HARNESS AND ELECTRICAL CONNECTORS 
   • Ignition OFF.
   • Using a good light source, thoroughly inspect the EPAS column wire harness for:
     • cut wires
     • pinched wires
     • broken wires
     • corrosion
   • PSCM_A connector disconnected. (C225A)
   • PSCM_B connector disconnected. (C225B)
   • Using a good light source, inspect all disconnected electrical connectors for the following:
     • corrosion
     • damaged or bent pins
     • pushed-out pins
     • spread terminals
   • Are the wire harness and the above electrical connectors in good condition? 
5. BF5: CHECK THE PSCM FOR RETURNING DTCS 
   • PSCM_A connector connected. (C225A) Make sure the connector seats and latches correctly.
   • PSCM_B connector connected. (C225B) Make sure the connector seats and latches correctly.
   • Ignition ON, engine OFF.
   • Clear the PSCM DTCs.
   • Ignition OFF.
   • Wait at least one minute.
   • Ignition ON, engine running.

     Carry out the PSCM self-test.

   • Is DTC C1 B00:xx present in the PSCM? 

   Yes	No
   INSTALL a new EPAS steering column. REFER to the Steering Column article. ORDER a replacement EPAS column and INCLUDE the RVC on the order form. If this is a Ford paid repair, INCLUDE the RVC on the warranty claim form.	The condition causing the DTC is not present at this time and may have been caused by a loose or corroded electrical connector. ADDRESS the root cause of any connector or pin issues.

6. BF6: DETERMINE DIAGNOSTIC DIRECTION 
   • Review the PSCM self-test results from the previous step.
   • Was DTC C1 B00:49 present in the PSCM? 

   Yes	No
   Go to  BF7.	For PSCM DTC C1B00:62, Go to  BF8. For all others, REFER to the PSCM DTC Chart.

7. BF7: CHECK THE PSCM FOR RETURNING DTC C1B00:49 
   NOTE: To clear DTC C1 B00:49, the vehicle must be driven straight ahead for 30 seconds at speeds greater than 50 km/h (30 mph).
   • PSCM_A connector connected. (C225A) Make sure the connector seats and latches correctly.
   • PSCM_B connector connected. (C225B) Make sure the connector seats and latches correctly.
   • Ignition ON, engine OFF.
   • Clear the PSCM DTCs.
   • Ignition OFF.
   • Wait at least one minute.
   • Ignition ON, engine running.
   • Turn the steering wheel through the full range of motion (lock-to-lock).
   • Drive the vehicle for at least 3 minutes, with straight driving above 50 km/h (30 mph) for at least 30 seconds.
   • Ignition OFF.
   • Ignition ON, engine OFF.

     Carry out the PSCM self-test.

   • Is DTC C1 B00:49 present in the PSCM? 

   Yes	No
   INSTALL a new EPAS steering column. REFER to the Steering Column article. ORDER a replacement EPAS column and INCLUDE the RVC on the order form. If this is a Ford paid repair, INCLUDE the RVC on the warranty claim form.	The condition causing the DTC is not present at this time and may have been caused by a loose or corroded electrical connector. ADDRESS the root cause of any connector or pin issues. The condition causing the DTC to set may be due to a disconnected or discharged battery, a PSCM or ABS module re-flash or module configuration, or loss of ABS communication to the PSCM.

8. BF8: CHECK THE PSCM FOR RETURNING DTC C1B00:62 
   • PSCM_A connector connected. (C225A) Make sure the connector seats and latches correctly.
   • PSCM_B connector connected. (C225B) Make sure the connector seats and latches correctly.
   • Ignition ON, engine OFF.
   • Clear the PSCM DTCs.
   • Ignition OFF.
   • Wait at least one minute.
   • Ignition ON, engine running.
   • Turn the steering wheel through the full range of motion (lock-to-lock).
   • Drive the vehicle for at least 3 minutes, with straight driving above 50 km/h (30 mph) for at least 30 seconds.
   • Ignition OFF.
   • Ignition ON, engine OFF.

     Carry out the PSCM self-test.

   • Is DTC C1 B00:62 present in the PSCM? 

   Yes	No
   VERIFY the correct steering gear is installed on the vehicle. VERIFY the alignment is correct, REFER to the Suspension System - General Information article. VERIFY the steering gear is installed correctly on the vehicle.	The condition causing the DTC is not present at this time and may have been caused by a loose or corroded electrical connector. ADDRESS the root cause of any connector or pin issues. The condition causing the DTC to set may be due to a disconnected or discharged battery, a PSCM or ABS module re-flash or module configuration, or loss of ABS communication to the PSCM.