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Home >> Ford >> 2021 >> Explorer ST >> Repair and Diagnosis >> External Pages >> Different car >> Section 496 (Abs Guided Routine) >> Pinpoint Tests >> Pinpoint Tests Y: ABS Module Internal Fault Concern >> Possible Causes
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Possible Causes

WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
  1. Y1: GUIDED DIAGNOSTIC QUESTION 
    • This step is for vehicles equipped with EPB system or an EBB unit.
    • Were you sent here from diagnostics in the Parking Brake and Actuation article or the Power Brake Actuation article? 
  2. Y2: RECHECK THE ABS MODULE FOR DTCS 
    • Ignition ON, engine OFF.
      NOTE: To access the ABS ECU Reset routine when using Ford IDS, go to Chassis, then Braking and click ABS ECU Reset.
    • Using a diagnostic scan tool, carry out the ABS ECU Reset routine.
    • Clear the ABS DTCs.
    • Ignition OFF.
      NOTE: If DTC U2007:4B or U3000:4B is present, allow the vehicle to cool for a minimum of 30 minutes.
    • Ignition ON, engine OFF.
    • Using a diagnostic scan tool, carry out the ABS ECU Reset routine.

      Carry out the ABS self-test.

    • Record the ABS module DTCs.
    • Are any of the DTCs from the Fault Trigger Conditions table present and active in the ABS module? 
  3. Y3: RECHECK THE ABS MODULE FOR DTCS 
    • Ignition ON, engine OFF.
    • Clear the ABS DTCs.
    • Ignition OFF.
      NOTE: If DTC U2007:4B or U3000:4B is present, allow the vehicle to cool for a minimum of 30 minutes.
    • Ignition ON, engine OFF.
    • Using a diagnostic scan tool, carry out the ABS ECU Reset routine.

      Carry out the ABS self-test.

    • Record the ABS module DTCs.
    • Are any of the DTCs from the Fault Trigger Conditions table present and active in the ABS module? 
      Yes No
      Go to  Y5. Go to  Y4.
  4. Y4: VERIFY THE ABS MODULE TO HCU FASTENERS 
    • Ignition OFF.
    • Verify all ABS module-to- HCU fasteners are tightened to their correct torque specifications. Refer to the Anti-Lock Brake System (ABS) and Stability Control article.
    • Are fasteners tightened to their correct torque specifications? 
      Yes No
      Go to  Y5. TIGHTEN all ABS module fasteners to their correct torque specifications.
      Go to  Y5.
  5. Y5: CHECK FOR CORRECT ABS MODULE OPERATION 
    • Ignition OFF.
  6. Y6: CHECK FOR CORRECT ABS OPERATION 
    • Ignition OFF.
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