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HOMESERVICE MANUALSFORD2018F-150 XLT, 4D PICKUP EXTRA CAB, 3.5L ENG VIN G, RWDREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESBRAKES CONTROL SYSTEMSABS GUIDED ROUTINE TESTINGPINPOINT TESTSPINPOINT TESTS AK: CALIBRATION FAULT BETWEEN THE ABS MODULE AND THE HCUPOSSIBLE CAUSES
2018 Ford F-150 XLT, 4D Pickup Extra Cab, 3.5L Eng VIN G, RWD

Possible Causes

2018 Ford F-150 XLT, 4D Pickup Extra Cab, 3.5L Eng VIN G, RWDSECTION Possible Causes
  • Calibration routine not complete
  • ABS module
  1. AK1: CARRY OUT THE ABS MODULE/HCU CALIBRATION 
    • Ignition ON, engine OFF.
    • Using a diagnostic scan tool, carry out the Inlet Valve Calibration and then the Master Cylinder Isolation Calibration.
    • Clear the ABS DTCs.
    • Ignition OFF.
    • Ignition ON, engine OFF.
    • Carry out the ABS self-test.
    • Are any of the DTCs listed in the Fault Trigger Conditions Table currently active and present in the ABS module? 
      Yes No
      Go to  AK2. The systems is operating correctly. The concern was caused by an incomplete calibration.
  2. AK2: CHECK FOR CORRECT ABS MODULE OPERATION 
    • Ignition OFF.
    • Ignition ON, engine OFF.
    • Using a diagnostic scan tool, carry out the Inlet Valve Calibration and then the Master Cylinder Isolation Calibration.
    • Carry out the ABS self-test.
    • Are any of the DTCs listed in the Fault Trigger Conditions Table currently active and present in the ABS module? 
      Yes No
      INSTALL a new ABS module.
      CHECK OASIS for any 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 ABS module. REFER to Anti-Lock Brake System (ABS) and Stability Control article
      ORDER a replacement ABS module and INCLUDE the RVC on the form.
      If this is a Ford paid repair, INCLUDE the RVC on the warranty claim form.      		 The systems is operating correctly. The concern was caused by an incomplete calibration.
  3. AK3: CHECK FOR CORRECT ABS OPERATION 
    • Ignition OFF.
    • Ignition ON, engine OFF.
    • Using a diagnostic scan tool, carry out the Inlet Valve Calibration and then the Master Cylinder Isolation Calibration.
    • Carry out the ABS self-test.
    • Are any of the DTCs listed in the Fault Trigger Conditions Table currently active and present in the ABS module? 
      Yes No
      INSTALL a new HCU.
      CHECK OASIS for any 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 ABS module and HCU assembly. REFER to Anti-Lock Brake System (ABS) and Stability Control article.
      ORDER a replacement ABS module and HCU assembly. INCLUDE the RVC form.
      If this is a Ford paid repair, INCLUDE the RVC on the warranty claim form.      		 The systems is operating correctly. The concern was caused by an incomplete calibration.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.