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

WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

BR1 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 BR2

No Refer to IPC Guided Routine Testing .

BR2 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 BR3

No REFER to: Interior Lighting .

BR3 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
- Using a diagnostic scan tool, check the GWM Continuous Memory Diagnostic Trouble Codes (CM DTCs).
Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes REFER to: Communications Network .

No GO to BR4

BR4 PERFORM THE BCM (BODY CONTROL MODULE) SELF-TEST
- Using a diagnostic scan tool, perform the BCM self-test.
Is DTC B10F1:14 present?

Yes GO to BR5

No GO to BR9

BR5 CHECK THE KEY-IN-IGNITION INPUT CIRCUIT FOR VOLTAGE

Ignition OFF.

Insert the key into the ignition cylinder.

Disconnect BCM C2280B.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280B-38	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to BR9

GO to BR6

BR6 CHECK THE KEY-IN-IGNITION INPUT CIRCUIT FOR SHORT TO GROUND

Remove the key from the ignition cylinder.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280B-38	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to BR7

No	REPAIR the circuit.

BR7 CHECK THE KEY-IN-IGNITION INPUT CIRCUIT FOR OPEN

Disconnect Ignition Switch C250.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280B-38	Courtesy of FORD MOTOR COMPANY	C250-5

Is the resistance less than 3 ohms?

Yes

GO to BR8

No	REPAIR the circuit.

BR8 CHECK THE IGNITION SWITCH
- Remove the ignition switch. REFER to: Ignition Switch - Vehicles With: Keyless Vehicle System .
- Perform the ignition switch component test.
Is the ignition switch OK?

Yes INSTALL a new ignition lock cylinder housing.

No INSTALL a new ignition switch. REFER to: Ignition Switch .

BR9 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all BCM connectors and related in-line 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 and related in-line 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, Refer to BCM GUIDED ROUTINE .

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.