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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 BR : The Chime Always Sounds

Pinpoint Test BR : The Chime Always Sounds

  1. Instrument Cluster for schematic and connector information.

    Normal Operation and Fault Conditions 

    REFER to: Warning Chimes - System Operation and Component Description .

    Possible Sources 

    • Exterior lighting concern
    • Interior lighting concern
    • Wiring, terminals or connectors
    • Ignition switch
    • Ignition lock cylinder housing (if equipped)
    • BCM
    • GWM
    • IPC

  2. BR1 CHECK THE IPC (INSTRUMENT PANEL CLUSTER) FOR MESSAGE CENTER MESSAGES

    • Ignition OFF.

    • Ignition ON.

    • Check the IPC and message center for illuminated warning indicator or message center displays.

    Does the IPC have any RTT indicators illuminated or message center messages displayed? 

    Yes  REPAIR all message center indication concerns first. REFER to Symptom Chart: IPC or Symptom Chart: Information And Message Center. Refer to Symptom Chart(s) 
    No  GO to  BR2

  3. BR2 CHECK THE EXTERIOR LIGHTING OPERATION

    • Place the headlamp switch in the OFF position.

    • Close all doors.

    • Wait one minute.

    • Observe the exterior lights.

    Are the headlamps off? 

    Yes  GO to  BR3
    No  REFER to: Headlamps .

  4. BR3 CHECK THE INTERIOR LIGHTING OPERATION

    • Open and close the driver door.

    • Observe the interior lights.

    Do the interior lights operate correctly from the driver door? 

    Yes  GO to  BR4
    No  REFER to: Interior Lighting .

  5. BR4 PERFORM THE BCM (BODY CONTROL MODULE) SELF-TEST

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

    Are any Diagnostic Trouble Codes (DTCs) recorded? 

    Yes  REFER to: Body Control Module (BCM) .
    No  If not equipped with a keyed ignition, GO to  BR5

  6. BR5 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

    • Ignition OFF.

    • Disconnect and inspect the BCM connectors.

    • Repair:

      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary

    • Reconnect the BCM connectors. Make sure they seat and latch correctly.

    • Operate the system and verify the concern is still present

    Is the concern still present? 

    Yes  CHECK On-Line Automotive Service Information System (OASIS) for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM. REFER to: Body Control Module (BCM) .
    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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