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Possible Causes



  1. Z1: CHECK THE SERVICE HISTORY 
    • Check the service history for recent service actions related to the ABS module, SASM/Clockspring assembly or BCM.
    • Have there been any recent service actions with the ABS module, SASM/Clockspring assembly or BCM? 
      Yes No
      For recent BCM service actions, Go to  Z5.
      For recent SASM/Clockspring assembly service actions, Go to  Z9.
      For recent ABS module service actions, Go to  Z6.      		 For SASM concerns, Go to  Z3.
      For ABS module concerns, Go to  Z2.
      For all others, Go to  Z4.
  2. Z2: CHECK FOR ABS MODULE COMMUNICATION DTCS 
  3. Z3: CHECK FOR SASM COMMUNICATION DTCS 
    • Ignition ON, engine OFF.

      Carry out the SASM self-test.

    • Are any lost communication or invalid data DTCs present? 
      Yes No
      DIAGNOSE these DTCs first. REFER to the SASM DTC Chart. Go to  Z8.
  4. Z4: CHECK THE BCM COMMUNICATIONS 

    Carry out the BdyCM self-test.

    • Does the diagnostic scan tool communicate with the BCM and retrieve any DTCs? 
      Yes No
      DIAGNOSE all BCM DTCs before continuing with this pinpoint test. REFER to the Multifunction Electronic Modules article.
      If the scan tool can communicate with the BCM but there are no DTCs present, Go to  Z5.      		 If the scan tool cannot communicate with the BCM, REFER to the Module Configuration article to diagnose the no communication concern.
  5. Z5: CONFIGURE THE BCM 
  6. Z6: CONFIGURE THE ABS MODULE USING PMI 
  7. Z7: CONFIGURE THE ABS MODULE USING AS-BUILT DATA 
    • Ignition ON, engine OFF.
    • Using a diagnostic scan tool, configure the ABS module using As-Built data. Follow the diagnostic scan tool directions.
    • Ignition OFF.
    • Ignition ON, engine OFF.
    • Clear the ABS DTCs.

      Carry out the ABS self-test.

    • Is the original DTC currently present and active? 
      Yes No
      Go to  Z9. The system is operating correctly. The concern was caused by an incomplete or improper programming session.
  8. Z8: CONFIGURE THE SASM 
    • Ignition ON, engine OFF.
    • Carry out the SASM programming procedure as directed by the diagnostic scan tool. For additional information, refer to the Module Configuration article.
    • Clear the SASM DTCs.
    • Ignition OFF.
    • Ignition ON, engine OFF.

      Carry out the SASM self-test.

    • Is the original DTC currently present and active? 
      Yes No
      Go to  Z10. The system is operating correctly. The concern was caused by an incomplete or improper programming session.
  9. Z9: INITIALIZE THE STABILITY CONTROL SYSTEM 
  10. Z10: INITIALIZE THE STABILITY CONTROL SYSTEM 
    • Ignition ON, engine OFF.
    • Clear the SASM DTCs.
    • Wait at least 90 seconds for all modules to go to sleep.
    • Ignition ON, engine OFF.

      Carry out the SASM self-test.

    • Is the original DTC currently present and active? 
      Yes No
      Go to  Z12. The system is operating correctly. The concern was caused by an incomplete or improper programming session.
  11. Z11: CHECK FOR CORRECT ABS MODULE OPERATION 
    • Ignition OFF.
    • ABS Module connector disconnected. (C155)
    • Using a good light source, inspect the electrical connector for the following:
      • corrosion - install new connector or terminal and clean the module pins
      • damaged or bent pins - install new terminals or pins
      • pushed-out pins - install new pins as necessary
      • spread terminals - install new terminals as necessary
    • ABS Module connector connected. (C155) Make sure the connector seats and latches correctly.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present? 
      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 services articles address this concern, INSTALL a new ABS module. REFER to the 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 system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
  12. Z12: CHECK FOR CORRECT SASM OPERATION 
    • Ignition OFF.
    • SASM connector disconnected.
    • Using a good light source, inspect the electrical connector for the following:
      • corrosion - install new connector or terminal and clean the module pins
      • damaged or bent pins - install new terminals or pins
      • pushed-out pins - install new pins as necessary
      • spread terminals - install new terminals as necessary
    • SASM connector connected. Make sure the connector seats and latches correctly.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present? 
      Yes No
      INSTALL a new SASM.
      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 services articles address this concern, INSTALL a new SASM-Clockspring assembly. REFER to the Supplemental Restraints System article.      		 The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
  13. Z13: CHECK FOR CORRECT ABS OPERATION 
    • Ignition OFF.
    • ABS_A Module connector disconnected. (C135A)
    • ABS_B Module connector disconnected. (C135B)
    • Using a good light source, inspect the electrical connector for the following:
      • corrosion - install new connector or terminal and clean the module pins
      • damaged or bent pins - install new terminals or pins
      • pushed-out pins - install new pins as necessary
      • spread terminals - install new terminals as necessary
    • ABS_B Module connector connected. (C135B) Make sure the connector seats and latches correctly.
    • ABS_A Module connector connected. (C135A) Make sure the connector seats and latches correctly.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present? 
      Yes No
      INSTALL a new EBB assembly.
      The HCU and ABS module are a single assembly known as the EBB unit.
      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 EBB unit (HCU and ABS module assembly). REFER to the Anti-Lock Brake System (ABS) and Stability Control article. ORDER a replacement EBB unit and INCLUDE the RVC on the form.
      If this is a Ford paid repair, INCLUDE the RVC on the warranty claim form.      		 The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
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