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Home >> Lincoln >> 2021 >> Aviator Base, AWD >> Repair and Diagnosis >> Electrical >> Gauges >> Instrumentation, Message Center And Warning Chimes (2 Of 2) >> Diagnosis And Testing >> Instrumentation, Message Center and Warning Chimes >> Pinpoint Tests >> Pinpoint Test BO : The Blind Spot Information System (BLIS®)/Cross Traffic Alert (CTA) Warning Chime Is Inoperative

Pinpoint Test BO : The Blind Spot Information System (BLIS®)/Cross Traffic Alert (CTA) Warning Chime Is Inoperative

  1. Normal Operation and Fault Conditions 

    See BLIS/ CTA Warning Chime. REFER to: Warning Chimes - System Operation and Component Description .

    Possible Sources 

    • Communication concern
    • BLIS/ CTA concern
    • GWM
    • IPC

  2. BO1 CHECK THE SEATBELT WARNING CHIME OPERATION

    • Ignition OFF.

    • Ignition ON.

    • Unbuckle the driver seatbelt.

    • Monitor the seatbelt warning chime when the ignition is transitioned from OFF to RUN for 6 seconds.

    Does the seatbelt warning chime operate for approximately 6 seconds? 

    Yes  GO to  BO2
    No  GO to Pinpoint Test CB 

  3. BO2 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  BO3

  4. BO3 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 Blind Spot Information System (BLIS®)/Cross Traffic Alert (CTA) system. REFER to BLIND SPOT INFORMATION SYSTEM
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