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Home >> Lincoln >> 2021 >> Aviator Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrumentation, Message Center And Warning Chimes (2 Of 2) >> Diagnosis And Testing >> Instrumentation, Message Center and Warning Chimes >> Pinpoint Tests >> Pinpoint Test At : The Cruise Control RTT (RECONFIGURABLE Telltale) Indicator Is Never On

Pinpoint Test At : The Cruise Control RTT (RECONFIGURABLE Telltale) Indicator Is Never On

  1. Normal Operation and Fault Conditions 

    Cruise Control. REFER to: Instrument Panel Cluster (IPC) - System Operation and Component Description .

    If the cruise control status, cruise control override, cruise control set speed display, adaptive cruise control gap display or adaptive cruise control follow mode message is missing or deemed invalid by the IPC for less than 5 seconds, the IPC defaults the cruise control RTT indicator to the last indication state (on or off), based upon the last message received.

    If the cruise control status, cruise control override, cruise control set speed display, adaptive cruise control gap display or adaptive cruise control follow mode message is missing or if the data is deemed invalid by the IPC for 5 seconds or longer, the IPC defaults the cruise control RTT indicator off.

    Possible Sources 

    • Communication concern
    • Cruise control concern
    • PCM concern
    • IPMA concern
    • GWM
    • IPC

  2. AT1 CHECK THE MESSAGE CENTER OPERATION

    • Ignition ON.

    • Close all doors, liftgate and the hood.

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

    • Monitor the door ajar RTT warning indicator.

    • Open the driver door.

    • Clear the message center popup warning.

    • Monitor the door ajar RTT warning indicator.

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

    Yes  GO to  AT2
    No  GO to Pinpoint Test A 

  3. AT2 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST

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

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to the IPC DTC Chart. Refer to Diagnostic Trouble Code (DTC) Chart 
    No  GO to  AT3

  4. AT3 PERFORM THE PCM (POWERTRAIN CONTROL MODULE) KOEO (KEY ON, ENGINE OFF) SELF-TEST

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

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to: Electronic Engine Controls .
    No  If equipped with adaptive cruise control, GO to  AT4 If not equipped with adaptive cruise control, GO to  AT5

  5. AT4 PERFORM THE IPMA (IMAGE PROCESSING MODULE A) SELF-TEST

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

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to LANE KEEPING SYSTEM
    No  GO to  AT5

  6. AT5 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

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

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to: Communications Network .
    No  DIAGNOSE the cruise control system. For base cruise control, REFER to: Cruise Control . For adaptive cruise control, REFER to: Cruise Control - Vehicles With: Adaptive Cruise Control With Lane Centering .
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