Pinpoint Test L : One Or Both Upper High Beams Are On Continuously - Vehicles With Halogen Headlamps

WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

L1 CHECK HIGH BEAMS OPERATION
- Ignition ON.
- Place the headlamp switch in the HEADLAMPS position.
- Place the LH steering column multifunction switch in the LOW BEAM position and observe the headlamps.
- Observe the operation of the LH and RH headlamps.
Are both high beams illuminated?

Yes GO to L3

No GO to L2

L2 CHECK HIGH BEAM VOLTAGE SUPPLY CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect: BCM C2280G .

Disconnect: Inoperative LH Headlamp C1509A or RH Headlamp C1510A .

Ignition ON.

Measure:

LH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1509A-3	Courtesy of FORD MOTOR COMPANY	Ground

RH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1510A-3	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit.

GO to L3

L3 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Disconnect and inspect all 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 determine if the concern is still present.

Is the concern still present?

Yes	CHECK 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 Hardware Testing .

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.