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Home >> Ford >> 2015 >> Edge Sport, AWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System Component Testing >> Pinpoint Tests >> Pinpoint Tests I: ABS Module Communication Concern With PCM - TCM >> Possible Causes
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Possible Causes

  1. I1: CHECK THE COMMUNICATION NETWORK 
    • Ignition ON, engine OFF.
    • Press the Read Vehicle Information button to view the results of the modules communicating on the network.
    • Retrieve the continuous memory DTCs.
    • Does the PCM pass the Network Test? 
      Yes No
      GO to  I2. DIAGNOSE the PCM does not communicate with the diagnostic scan tool. REFER to Module Communications Network .
  2. I2: RECHECK FOR DTC P1571:64 
    • Carry out the ABS self-test.
    • Clear the ABS DTCs.
    • Ignition OFF.
    • Ignition ON, engine OFF.
    • Carry out the ABS self-test.
    • Is DTC P1571:64 retrieved again? 
      Yes No
      GO to  I3. If no DTCs are present, the system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.
      If DTC U0100:00, U0100:87, U0101:00, U0101:87, U0401:68, U0401:82 or U0402:68 is present, GO to  I5.
  3. I3: INSPECT THE STOPLAMP SWITCH 
    • Inspect the stoplamp switch for correct installation and obvious signs of damage.
    • Observe the stoplamp switch while pressing and releasing the brake pedal.
    • Is the stoplamp switch correctly installed, free from obvious signs of damage and does it operate correctly? 
      Yes No
      GO to  I5. If the switch is damaged, INSTALL a new stoplamp switch. REFER to Exterior Lighting .
      If the switch is not installed correctly or does not operate correctly, GO to  I4.
  4. I4: VERIFY BRAKE PEDAL SWITCH INSTALLATION 
    NOTE: Follow all notes and cautions in the stoplamp switch removal and installation procedure.
    • Remove and install the stoplamp switch. Refer to the Exterior Lighting .
    • Test drive the vehicle at speeds above 20 km/h (12 mph) and carry out at least 2 complete stops.
    • Carry out the ABS self-test.
    • Is DTC P1571:64 retrieved again? 
      Yes No
      GO to  I5. The system is operating correctly at this time. The DTC may have been set due to an incorrectly installed stoplamp switch.
  5. I5: REVIEW THE RECORDED DTCS FROM THE ABS SELF- TEST 
    • Review the recorded DTCs from the ABS self-test.
    • Is DTC U3003:16 or U3003:17 present? 
      Yes No
      For DTC U3003:16, Go to Pinpoint Test A .
      For DTC U3003:17, Go to Pinpoint Test F .      		 GO to  I6.
  6. I6: RETRIEVE THE DTCS) FROM THE PCM SELF-TEST 
    • Carry out the PCM KOEO self-test.
    • Is DTC P0562 or P0563 present? 
      Yes No
      DIAGNOSE the PCM DTC. REFER to the appropriate Electronic Engine Controls System article. GO to  I7.
  7. I7: CHECK FOR LOST COMMUNICATION DTC SET IN OTHER MODULES 
    • Retrieve the continuous memory DTCs.
    • Is DTC P1571:64, U0100:xx, U0101:xx, U401:xx or U402:xx set in other modules in addition to the ABS module? 
      Yes No
      CHECK OASIS for any applicable Technical Service Bulletins TSBs.
      If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions.
      If no TSBs address this concern, INSTALL a new PCM. REFER to the appropriate Electronic Engine Controls System article.      		 INSTALL a new ABS module.
      CHECK OASIS for any applicable TSBs.
      If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions.
      If no TSBs address this concern, INSTALL a new ABS module. REFER to the ABS module Removal and Installation procedure in Anti-Lock Brake System (ABS) And Stability Control .
      ORDER a replacement ABS module and INCLUDE the RVC form.
      If this is a Ford repair, INCLUDE the RVC on the warranty claim form.
      When complete, SELECT the "X" in the top right corner to CLOSE this procedure.
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