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Pinpoint Test Q : U0155:00 - Abs (Anti-Lock Brake System) Module

WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

  1. Q1 CHECK THE COMMUNICATION NETWORK

    • Ignition ON.

    • Using a diagnostic scan tool, carry out the Network Test.

    Do the GWM and the IPC pass the Network Test? 

    Yes  GO to  Q2
    No  DIAGNOSE the no communication with the GWM or IPC. Refer to: Communications Network .

  2. Q2 CHECK THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)

    • Using a diagnostic scan tool, carry out the ABS module self-test.

    • Clear the Diagnostic Trouble Codes (DTCs).

    • Ignition OFF.

    • Ignition ON.

    • Using a diagnostic scan tool, carry out the ABS module self-test.

    • Record the ABS module Diagnostic Trouble Codes (DTCs).

    Is DTC U0155:00 retrieved again? 

    Yes  GO to  Q3
    No  The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

  3. Q3 REVIEW THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE ABS (ANTI-LOCK BRAKE SYSTEM) SELF-TEST

    • Check the recorded Diagnostic Trouble Codes (DTCs) from the ABS module self-test.

    Was DTC U3003:16 or U3003:17 recorded? 

    Yes  For DTC U3003:16, GO to Pinpoint Test A . For DTC U3003:17, GO to Pinpoint Test E 
    No  GO to  Q4

  4. Q4 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) IN THE GWM (GATEWAY MODULE A)

    • Using a diagnostic scan tool, carry out the GWM self-test.

    Are any Diagnostic Trouble Codes (DTCs) present in the GWM? 

    Yes  DIAGNOSE the GWM Diagnostic Trouble Codes (DTCs). Refer to: Communications Network .
    No  GO to  Q5

  5. Q5 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) IN THE IPC (INSTRUMENT PANEL CLUSTER)

    • Using a diagnostic scan tool, carry out the IPC self-test.

    Are any Diagnostic Trouble Codes (DTCs) present in the IPC? 

    Yes  DIAGNOSE the IPC Diagnostic Trouble Codes (DTCs). Refer to: Instrumentation, Message Center and Warning Chimes .
    No  GO to Q6 

  6. Q6 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERN

    NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI or the PMI may not have been carried out.

    • Check the vehicle service history for recent service actions related to the IPC or ABS module. If recent service history is found:

      • verify the correct replacement module was installed.

        1. HVBOM may be used to verify correct part fitment.

      • verify the configuration of replacement module was correct.

        1. re-configure the module using as-built data if prior configuration is suspect.

      • verify the module was not obtained from a like vehicle and installed into customer vehicle.

        1. return the swapped module to source vehicle and obtain new replacement module.

    • Operate the system and determine if the observable symptom is still present.

    Is the observable symptom still present? 

    Yes  GO to Q6 
    No  The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

  7. Q7 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0155:XX SET IN OTHER MODULES

    • Using a diagnostic scan tool, carry out the self-test for all modules.

    • Retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

    Is DTC U0155:xx set in 1 or more modules in addition to the ABS module? 

    Yes  GO to  Q8
    No  GO to  Q9

  8. Q8 CHECK FOR CORRECT IPC (INSTRUMENT PANEL CLUSTER) OPERATION

    • Ignition OFF.

    • Disconnect ABS module C135 .

    • Disconnect IPC C220 .

    • Disconnect all in-line electrical connectors between the IPC and the ABS module.

    • Using a good light source, inspect all disconnected electrical connectors 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 IPC C220 . Make sure it seats and latches correctly.

    • Connect all in-line electrical connectors between the IPC and the ABS module. Make sure they seat and latch correctly.

    • Connect ABS module C135 . Make sure it seats and latches correctly.

    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    Yes  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 Technical Service Bulletins (TSBs) address this concern, Refer to IPC Hardware Testing .
    No  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

  9. Q9 CHECK FOR CORRECT ABS (ANTI-LOCK BRAKE SYSTEM) MODULE OPERATION

    • Ignition OFF.

    • Disconnect ABS module C135 .

    • Disconnect IPC C220 .

    • Disconnect all in-line electrical connectors between the IPC and the ABS module.

    • Using a good light source, inspect all disconnected electrical connectors 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 IPC C220 . Make sure it seats and latches correctly.

    • Connect all in-line electrical connectors between the IPC and the ABS module. Make sure they seat and latch correctly.

    • Connect ABS module C135 . Make sure it seats and latches correctly.

    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    Yes  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 Technical Service Bulletins (TSBs) address this concern, INSTALL a new ABS module. Refer to: Anti-Lock Brake System (ABS) Module .
    No  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
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