Pinpoint Test R : B102E:11, B102E:15, B102E:92

WARNING: This page is about a different variant/trim than selected.

Refer to Manual Climate Control System for schematic and connector information.

Normal Operation and Fault Conditions

Ambient air quality sensor, REFER to: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
FCIM B102E:11	Air Quality Sensor: Circuit Short To Ground	Module senses lower than expected voltage on the sensor feedback circuit, indicating a short to ground.
FCIM B102E:15	Air Quality Sensor: Circuit Short To Battery Or Open	Module senses greater than expected voltage on the sensor feedback circuit, indicating a short to voltage or an open circuit or sensor.
FCIM B102E:92	Air Quality Sensor: Performance Or Incorrect Operation	Module senses erratic voltages from the sensor.

Possible Sources

Wiring, terminals or connectors
Ambient air quality sensor
FCIM

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may cause damage to the connector.

R1 CHECK THE AMBIENT AIR QUALITY SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect FCIM C2402A.

Disconnect ambient air quality sensor C1744.

Disconnect BJB fuse 23 (15A).

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1744-1	Courtesy of FORD MOTOR COMPANY	Ground
C1744-2	Courtesy of FORD MOTOR COMPANY	Ground
C1744-3	Courtesy of FORD MOTOR COMPANY	Ground

Is there any voltage present?

Yes	REPAIR the circuit in question.

GO to R2

R2 CHECK THE AMBIENT AIR QUALITY SENSOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1744-1	Courtesy of FORD MOTOR COMPANY	Ground
C1744-3	Courtesy of FORD MOTOR COMPANY	Ground

Are the resistances greater than 10, 000 ohms?

Yes

GO to R3

No	REPAIR the circuit in question.

R3 CHECK THE AMBIENT AIR QUALITY SENSOR CIRCUITS FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1744-1	Courtesy of FORD MOTOR COMPANY	BJB fuse 23 (15A) cavity, (component side)

Positive Lead	Measurement / Action	Negative Lead
C1744-2	Courtesy of FORD MOTOR COMPANY	Ground

Positive Lead	Measurement / Action	Negative Lead
C1744-3	Courtesy of FORD MOTOR COMPANY	C2402A-15

Are the resistances less than 3 ohms?

Yes

GO to R4

No	REPAIR the circuit in question.

R4 CHECK THE AMBIENT AIR QUALITY SENSOR CIRCUITS FOR A SHORT TOGETHER

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1744-1	Courtesy of FORD MOTOR COMPANY	C1744-2
C1744-1	Courtesy of FORD MOTOR COMPANY	C1744-3
C1744-2	Courtesy of FORD MOTOR COMPANY	C1744-3

Is the resistance greater than 10, 000 ohms?

Yes	INSTALL a new ambient air quality sensor. REFER to the appropriate procedure in Removal And Installation . TEST the system for normal operation. If the concern is still present, GO to R5

No	REPAIR the circuits.

R5 CHECK FOR CORRECT FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the FCIM 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 FCIM 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 service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, Refer to FCIM Guided Routine ..

No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.