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PSCM Circuit Information

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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.
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