Pinpoint Test B : One Or Both High Beams Is Inoperative

WARNING: This page is about a different car, the 2015 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

B1 CHECK THE LOW BEAM OPERATION
- Ignition ON.
- Place the headlamp switch in the HEADLAMPS position.
- Place the LH steering column multifunction switch in the high beam position and observe the headlamps.
- Place the LH steering column multifunction switch in the low beam position and observe the headlamps.
Do the low beams illuminate?

Yes If an individual high beam is inoperative, GO to B3. If both high beams are inoperative, GO to B2

No GO to PINPOINT TEST A : ONE OR BOTH LOW BEAMS IS INOPERATIVE .

B2 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 B10

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 B9

B3 CHECK FOR VOLTAGE FROM THE HEADLAMP HIGH BEAM CIRCUIT

Ignition OFF.

Place the headlamp switch in the OFF position.

Disconnect: With halogen headlamps, inoperative LH Headlamp C1021 or RH Headlamp C1041 .

Disconnect: With LED headlamps, inoperative LH Headlamp C1284 or RH Headlamp C1285 .

Ignition ON.

Place the headlamp switch in the HEADLAMPS position and the LH steering column multifunction switch in the HIGH BEAM position.

For halogen headlamps, measure:

LH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1021-2	Courtesy of FORD MOTOR COMPANY	Ground

RH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1041-2	Courtesy of FORD MOTOR COMPANY	Ground

For LED headlamps, measure:

LH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1284-6	Courtesy of FORD MOTOR COMPANY	Ground

RH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1285-6	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes	For halogen headlamps, GO to B7. For LED headlamps, GO to B8

No	GO to B4

B4 REPEAT THE ON-DEMAND SELF-TEST AND CHECK FOR VOLTAGE HEADLAMP LOW BEAM CIRCUIT

Place the headlamp switch in the OFF position and the LH steering column multifunction switch in the LOW BEAM position.

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

Clear the Diagnostic Trouble Codes (DTCs) and repeat the self-test (required to enable the lamp output driver).

Ignition OFF.

Ignition ON.

Place the headlamp switch in the HEADLAMPS position and the LH steering column multifunction switch in the HIGH BEAM position.

For halogen headlamps, measure:

LH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1021-2	Courtesy of FORD MOTOR COMPANY	Ground

RH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1041-2	Courtesy of FORD MOTOR COMPANY	Ground

For LED headlamps, measure:

LH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1284-6	Courtesy of FORD MOTOR COMPANY	Ground

RH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1285-6	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes	For halogen headlamps, INSTALL a new high beam headlamp bulb. REFER to: Headlamp Bulb . For LED headlamps, GO to B8

No	GO to B5

B5 CHECK THE HIGH BEAM CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Place the headlamp switch in the OFF position.

Disconnect: BCM C2280G .

For halogen headlamps, measure:

LH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1021-2	Courtesy of FORD MOTOR COMPANY	Ground

RH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1041-2	Courtesy of FORD MOTOR COMPANY	Ground

For LED headlamps, measure:

LH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1284-6	Courtesy of FORD MOTOR COMPANY	Ground

RH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1285-6	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to B6

REPAIR the circuit. After the repair: If no Diagnostic Trouble Codes (DTCs) are present, TEST the system for normal operation. If any BCM Diagnostic Trouble Codes (DTCs) other than DTC U3000:49 are present, CLEAR the Diagnostic Trouble Codes (DTCs), REPEAT the self-test (required to enable the lamp output driver) and cycle the ignition OFF and ON. TEST the system for normal operation. If DTC U3000:49 is present, Refer to BCM Hardware Testing .

B6 CHECK THE HIGH BEAM SUPPLY CIRCUIT FOR AN OPEN

For halogen headlamps, measure:

LH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1021-2	Courtesy of FORD MOTOR COMPANY	C2280G-11

RH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1041-2	Courtesy of FORD MOTOR COMPANY	C2280G-6

For LED headlamps, measure:

LH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1284-6	Courtesy of FORD MOTOR COMPANY	C2280G-11

RH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1285-6	Courtesy of FORD MOTOR COMPANY	C2280G-6

Is the resistance less than 3 ohms?

Yes

GO to B10

No	REPAIR the circuit.

B7 CHECK THE HEADLAMP GROUND CIRCUIT FOR AN OPEN

Measure:

LH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1021-2	Courtesy of FORD MOTOR COMPANY	C1021-4

RH Headlamp

Positive Lead	Measurement / Action	Negative Lead
C1041-2	Courtesy of FORD MOTOR COMPANY	C1041-4

Is the voltage greater than 11 volts?

Yes	For halogen headlamps, INSTALL a new high beam headlamp bulb. REFER to: Headlamp Bulb .

No	REPAIR the circuit in question.

B8 CHECK THE HEADLAMP INTERNAL HARNESS

CHECK the internal headlamp harness for open or shorted circuits and damaged or pushed-out pins.

Is the headlamp internal harness OK?

Yes	INSTALL a new ballast. REFER to: Ballast . CLEAR the Diagnostic Trouble Codes (DTCs) and REPEAT the self-test. TEST the system for normal operation. If the condition returns, INSTALL a new LED module. REFER to: Headlamp Bulb .

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

B9 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.

B10 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.