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Home >> Ford >> 2012 >> Taurus Limited, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 2985 (Parking Brake System - Parking Brake And Actuation - Vehicles With: Electronic Parking Brake (EPB)) >> Diagnosis And Testing >> Parking Brake >> Pinpoint Tests >> Pinpoint Test K : U0155:87 >> Pinpoint Test K : U0155:87

Pinpoint Test K : U0155:87

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  1. K1 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  K2
    No  DIAGNOSE the no communication with the GWM or IPC. Refer to: Communications Network .

  2. K2 CHECK THE EPB (ELECTRIC PARKING BRAKE) MODULE CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)

    • Using a diagnostic scan tool, carry out the EPB module self-test.
    • Clear the Diagnostic Trouble Codes (DTCs).
    • Ignition OFF.
    • Ignition ON.
    • Using a diagnostic scan tool, carry out the EPB module self-test.
    • Record the EPB module Diagnostic Trouble Codes (DTCs).

    Is DTC U0155:87 retrieved again? 

    Yes  GO to  K3
    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. K3 REVIEW THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE EPB (ELECTRIC PARKING BRAKE) SELF-TEST

    • Check the recorded Diagnostic Trouble Codes (DTCs) from the EPB 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 C 
    No  GO to  K4

  4. K4 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  K5

  5. K5 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  K6

  6. K6 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 EPB module? 

    Yes  GO to  K7
    No  GO to  K8

  7. K7 CHECK FOR CORRECT IPC (INSTRUMENT PANEL CLUSTER) OPERATION

    • Ignition OFF.
    • Disconnect IPC C220 .
    • Disconnect all related in-line electrical connectors between the IPC and the EPB 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 all related in-line electrical connectors between the IPC and the EPB module. Make sure they seat and latch correctly.
    • Connect IPC C220 . Make sure they seat and latch 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.

  8. K8 CHECK FOR CORRECT EPB (ELECTRIC PARKING BRAKE) MODULE OPERATION

    • Ignition OFF.
    • Disconnect EPB module C3675 .
    • Disconnect all related in-line electrical connectors between the EPB module and the IPC.
    • 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 all related in-line electrical connectors between the EPB module and the IPC. Make sure they seat and latch correctly.
    • Connect EPB module C3675 . Make sure they seat and latch 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 EPB module. Refer to: Parking Brake 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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