PINPOINT TEST L : The Autolamps Are On Continuously

L1 CHECK THE FLM HEADLAMP SWITCH PIDs

Ignition ON.

Using a scan tool, view FLM PIDs.

Using a scan tool, monitor the FLM LT_SW PID while moving the headlamp switch through all positions.

Do the headlamp switch positions agree with the PID ?

Yes	GO to L2.
No	INSTALL a new FLM. Refer to Front Lighting Control Module (FLM) .

L2 USE THE RECORDED DTCs FROM THE BCM SELF-TEST

Check the recorded results from the BCM self-test.

Is DTC B1A85:13 or DTC B1A85:11 present?

Yes	For DTC B1A85:13, GO to L4. For DTC B1A85:11, GO to L8.
No	GO to L3.

L3 CHECK FOR VOLTAGE TO THE LIGHT SENSOR (NO DTC)

Ignition OFF.

Disconnect: Light Sensor.

Ignition ON.

Place the headlamp switch in the autolamps on position.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C286-2	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage approximately 5 volts?

Yes	INSTALL a new light sensor. Refer to Light Sensor .
No	GO to L10.

L4 CHECK FOR VOLTAGE TO THE LIGHT SENSOR (Diagnostic Trouble Code (DTC) B1A85:13)

Ignition OFF.

Disconnect: Light Sensor.

Ignition ON.

Place the headlamp switch in the autolamps on position.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C286-2	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage approximately 5 volts?

Yes	GO to L7.
No	GO to L5.

L5 CHECK THE LIGHT SENSOR INPUT CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect: BCM C2280B.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C286-2	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit.
No	GO to L6.

L6 CHECK THE LIGHT SENSOR INPUT CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C286-2	Courtesy of FORD MOTOR COMPANY	C2280B-30

Is the resistance less than 3 ohms?

Yes	GO to L10.
No	REPAIR the circuit.

L7 CHECK THE LIGHT SENSOR GROUND CIRCUIT FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C286-2	Courtesy of FORD MOTOR COMPANY	C286-4

Is the voltage approximately 5 volts?

Yes	INSTALL a new light sensor. Refer to Light Sensor .
No	REPAIR the circuit.

L8 CHECK FOR VOLTAGE TO THE LIGHT SENSOR (Diagnostic Trouble Code (DTC) B1A85:11)

Ignition OFF.

Disconnect: Light Sensor.

Ignition ON.

Place the headlamp switch in the autolamps on position.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C286-2	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage approximately 5 volts?

Yes	INSTALL a new light sensor. Refer to Light Sensor .
No	GO to L9.

L9 CHECK THE LIGHT SENSOR INPUT CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect: BCM C2280B.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C286-2	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes	GO to L10.
No	REPAIR the circuit.

L10 CHECK FOR CORRECT BCM 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 TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new BCM. REFER to Multifunction Electronic Modules - Without Intelligent Access or REFER to Multifunction Electronic Modules - With Intelligent Access .
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.