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Home >> Ford >> 2023 >> Mustang Mach-E Select, RWD >> Repair and Diagnosis >> Electrical >> Gauges >> Instrumentation, Message Center And Warning Chimes >> Diagnosis And Testing >> Instrumentation, Message Center and Warning Chimes >> Pinpoint Tests >> Pinpoint Test Bf: The Key-In-Ignition Warning Chime Is Inoperative

Pinpoint Test Bf: The Key-In-Ignition Warning Chime Is Inoperative

  1. Refer to INSTRUMENT CLUSTER for schematic and connector information.

    Normal Operation and Fault Conditions 

    See Key-In-Ignition Warning Chime. REFER to: Warning Chimes - System Operation and Component Description .

    Possible Sources 

    • Wiring, terminals or connectors
    • Interior lighting concern
    • BCM
    • GWM
    • IPC

  2. BF1 CHECK THE SEATBELT WARNING CHIME OPERATION

    • Ignition OFF.

    • Ignition ON.

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

    Does the seatbelt warning chime operate for approximately 6 seconds? 

    Yes  GO to BF2 
    No  GO to Pinpoint Test A 
  3. BF2 CHECK THE INTERIOR LAMPS OPERATION

    • Open and close the driver door.

    • Observe the interior lamps.

    Do the interior lamps operate correctly from the driver door? 

    Yes  GO to BF3 
    No  REFER to: Interior Lighting .
  4. BF3 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 Diagnostic Trouble Code (DTC) Chart 
    No  GO to BF4 
  5. BF4 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 the appropriate DTC Chart.
    No  GO to BF5 
  6. BF5 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: Controller Area Network (CAN) Module Communications Network .
    No  GO to BF6 
  7. BF6 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 service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles 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.