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Home >> Ford >> 2021 >> Edge ST-Line, FWD >> Repair and Diagnosis (Single Page) >> Brakes >> Brakes Control Systems >> Abs Guided Routine - Pinpoint Tests G - ZA >> Pinpoint Tests Z: Abs (Anti-Lock Brake System) Module Configuration Concern >> Possible Causes

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  Z7.
    For recent ABS module service actions, Go to  Z6.    		 For ABS module concerns, Go to  Z2.
    For SASM concerns, Go to  Z3.
    For all others, Go to  Z4.
  2. Z2: CHECK FOR ABS (ANTI-LOCK BRAKE SYSTEM) MODULE COMMUNICATION DTCS (DIAGNOSTIC TROUBLE CODE) 
    • Put the ABS module in sleep mode by performing the following steps:
      • With ALL doors closed, set the ignition from ON to OFF.
      • Disconnect the diagnostic scan tool.
      • Open the door, exit the vehicle and close the door.
      • Wait a minimum of 90 seconds for the ABS module to enter sleep mode.
    • Ignition ON.
    • Carry out the ABS Module self-test.

    Are any lost communication or invalid data DTCs present? 

    Yes No
    DIAGNOSE these DTCs first. REFER to the ABS Module DTC Chart. Go to  Z4.
  3. Z3: CHECK FOR SASM (STEERING ANGLE SENSOR MODULE) COMMUNICATION DTC (DIAGNOSTIC TROUBLE CODE)S 
    • Ignition ON.
    • 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  Z7.
  4. Z4: CHECK THE BCM (BODY CONTROL MODULE) COMMUNICATIONS 
    • Carry out the BCM 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 BODY CONTROL MODULE (BCM) .
    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 CONTROLLER AREA NETWORK (CAN) MODULE COMMUNICATIONS NETWORK .
  5. Z5: CONFIGURE THE BCM (BODY CONTROL MODULE) 
    • Ignition ON.
    • Carry out the BCM programming procedure as directed by the diagnostic scan tool. For additional information, refer to MODULE PROGRAMMING .
    • Put the ABS module in sleep mode by performing the following steps:
      • With ALL doors closed, set the ignition from ON to OFF.
      • Disconnect the diagnostic scan tool.
      • Open the door, exit the vehicle and close the door.
      • Wait a minimum of 90 seconds for the ABS module to enter sleep mode.
    • Ignition ON.
    • Clear the ABS DTCs.
    • Carry out the ABS self-test.

    Is the original DTC currently present and active? 

    Yes No
    Go to  Z8 The system is operating correctly. The concern was caused by an incomplete or improper programming session.
  6. Z6: CONFIGURE THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE USING PMI (PROGRAMMABLE MODULE INSTALLATION) 
    • Ignition ON.
    • Carry out the ABS Configuration routine as directed by the diagnostic scan tool. For additional information, refer to MODULE PROGRAMMING .
    • Put the ABS module in sleep mode by performing the following steps:
      • With ALL doors closed, set the ignition from ON to OFF.
      • Disconnect the diagnostic scan tool.
      • Open the door, exit the vehicle and close the door.
      • Wait a minimum of 90 seconds for the ABS module to enter sleep mode.
    • Ignition ON.
    • Clear the ABS DTCs.
    • Carry out the ABS self-test.

    Is the original DTC currently present and active? 

    Yes No
    Go to  Z8 The system is operating correctly. The concern was caused by an incomplete or improper programming session.
  7. Z7: CONFIGURE THE SASM (STEERING ANGLE SENSOR MODULE) 
    • Ignition ON.
    • Carry out the SASM programming procedure as directed by the diagnostic scan tool. For additional information, refer to MODULE PROGRAMMING .
    • Put the ABS module in sleep mode by performing the following steps:
      • With ALL doors closed, set the ignition from ON to OFF.
      • Disconnect the diagnostic scan tool.
      • Open the door, exit the vehicle and close the door.
      • Wait a minimum of 90 seconds for the ABS module to enter sleep mode.
    • Ignition ON.
    • Clear the ABS DTCs.
    • Carry out the SASM self-test.

    Is the original DTC currently present and active? 

    Yes No
    Go to  Z8. The system is operating correctly. The concern was caused by an incomplete or improper programming session.
  8. Z8: INITIALIZE THE STABILITY CONTROL SYSTEM 
    • Ignition ON.
    • Using a diagnostic scan tool, carry out the ABS Calibration routine. Follow all diagnostic scan tool directions.
    • Clear the ABS DTCs.
    • Put the ABS module in sleep mode by performing the following steps:
      • With ALL doors closed, set the ignition from ON to OFF.
      • Disconnect the diagnostic scan tool.
      • Open the door, exit the vehicle and close the door.
      • Wait a minimum of 90 seconds for the ABS module to enter sleep mode.
    • Ignition ON.
    • Carry out the ABS self-test.

    Is the original DTC currently present and active? 

    Yes No
    For ABS module concerns, Go to  Z10
    For SASM concerns, Go to  Z9    		 The system is operating correctly. The concern was caused by an incomplete or improper programming session.
  9. Z9: CHECK FOR CORRECT SASM (STEERING ANGLE SENSOR MODULE) MODULE OPERATION 
    • Ignition OFF.
    • Disconnect SASM connector C2414A .
    • 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
    • Connect SASM connector C2414A . 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
    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. Refer to CLOCKSPRING , or CLOCKSPRING - VEHICLES WITH: ADAPTIVE STEERING .    		 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.
  10. Z10: CHECK FOR CORRECT ABS (ANTI-LOCK BRAKE SYSTEM) OPERATION 
    • Ignition OFF.
    • Disconnect ABS module C135 .
    • 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
    • Connect ABS module C135 . 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
    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. REFER to ELECTRIC BRAKE BOOSTER (EBB) .    		 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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