Pinpoint Test D : One Or Both High Beams Are On Continuously

WARNING: This page is about a different car, the 2018 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

D1 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 D2

No For halogen headlamps, GO to D4 For High Intensity Discharge (HID) headlamps, GO to D3

D2 CHECK THE LH (LEFT-HAND) MULTIFUNCTION SWITCH INPUT

Using a diagnostic scan tool, view SCCM Parameter Identifications (PIDs).

Monitor the SCCM High Beam Switch (HIGH_BEAM_SW) PID while placing the LH steering column multifunction switch in the HIGH BEAM and LOW BEAM positions.

Do the PID values agree with the LH steering column multifunction switch position?

Yes

GO to D6

No	INSTALL a new LH steering column multifunction switch. REFER to: Steering Column Multifunction Switch LH . TEST the system for normal operation. If the concern still exists, GO to D5

D3 CHECK FOR VOLTAGE FROM THE HEADLAMP HIGH BEAM CIRCUIT

Place the headlamp switch in the OFF position.

Ignition OFF.

Disconnect: LH Headlamp C1284 or RH Headlamp C1285.

Ignition ON.

Measure:

LH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1284-2	Courtesy of FORD MOTOR COMPANY	Ground

RH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1285-2	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes

GO to D4

No	INSTALL a new headlamp assembly. REFER to: Headlamp Assembly .

D4 CHECK HIGH BEAM VOLTAGE SUPPLY CIRCUITS FOR A SHORT TO VOLTAGE

For halogen headlamps, Place the headlamp switch in the OFF position.

Ignition OFF.

Disconnect: BCM C2280B.

Disconnect: For halogen headlamps, LH Headlamp C1284 or RH Headlamp C1285.

Ignition ON.

Measure:

LH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1284-2	Courtesy of FORD MOTOR COMPANY	Ground

RH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1285-2	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit.

GO to D6

D5 CHECK FOR CORRECT SCCM (STEERING COLUMN CONTROL MODULE) OPERATION

Disconnect and inspect all SCCM 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 SCCM 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, INSTALL a new SCCM. REFER to: Steering Column Control Module (SCCM) .

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.

D6 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 GUIDED ROUTINE 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.