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Pinpoint Test BA: The Trail Control RTT (RECONFIGURABLE Telltale) Indicator Is Never Or Always On

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
  1. Normal Operation and Fault Conditions 

    See Trail Control RTT Indicator. REFER to: Instrument Panel Cluster (IPC) - System Operation and Component Description .

    If the trail control status or trail control set speed display message is missing or invalid for less than 5 seconds, the IPC defaults the trail control indicator to its last state (on or off) based upon the last message received.

    If the trail control status or trail control set speed display message is missing for 5 seconds or longer, the IPC defaults the trail control RTT indicator off.

    Possible Sources 

    • Communication concern
    • Message center concern
    • GWM concern
    • ABS concern
    • PCM concern
    • IPC

  2. BA1 CHECK THE MESSAGE CENTER OPERATION

    • Ignition ON.

    • Close all doors and the hood.

    • Clear all message center warnings by pressing the OK button for each warning present.

    • Monitor the door ajar RTT indicator.

    • Open the driver door.

    • Clear the message center popup warning.

    • Monitor the door ajar RTT indicator.

    Is the door ajar RTT indicator off with the door closed, and on with the door open? 

    Yes  GO to  BA2
    No  GO to Pinpoint Test A 

  3. BA2 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST

    • Ignition ON.

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

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to Diagnostic Trouble Code (DTC) Chart .
    No  GO to  BA3

  4. BA3 PERFORM THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE SELF-TEST

    • Ignition ON.

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

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to the Master DTC Chart.
    No  GO to  BA4

  5. BA4 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Using a diagnostic scan tool, check the GWM Continuous Memory Diagnostic Trouble Codes (CMDTCs).

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to: Controller Area Network (CAN) Module Communications Network .
    No  GO to  BA5

  6. BA5 PERFORM THE PCM (POWERTRAIN CONTROL MODULE) KOEO (KEY ON, ENGINE OFF) SELF-TEST

    • Ignition ON.

    • Using a diagnostic scan tool, perform the PCMKOEO self-test.

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to the Master DTC Chart.
    No  DIAGNOSE the cruise control system. For base cruise control, REFER to: Cruise Control . For adaptive cruise control, REFER to: Cruise Control .
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