Pinpoint Test U : DTC B111D

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

WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

U1 CHECK THE BLOWER MOTOR FEED CIRCUIT FOR A SHORT TO GROUND

REFER to: Supplemental Restraint System (SRS) Depowering .

Disconnect: Passenger Side Airbag In-line C3049 .

Disconnect: Passenger Backrest Blower Motor C3039 .

Disconnect: Passenger Cushion Blower Motor C3040 .

Disconnect: SCME C3265C .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3265C-8	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to U2

No	REPAIR the circuit. GO to U5

U2 CHECK THE BLOWER MOTOR FEED CIRCUITS FOR A SHORT TOGETHER

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3265C-7	Courtesy of FORD MOTOR COMPANY	C3265C-8

Is the resistance greater than 10, 000 ohms?

Yes

GO to U3

No	REPAIR the circuits. GO to U5

U3 CHECK THE BACKREST BLOWER AND CUSHION BLOWER RESISTANCES

NOTE: The ohmmeter must be connected with the positive lead to pin 3 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected will result in false readings and lead to incorrect identification of components that are not faulty.

Measure the component side resistance between:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY C3040-3, Component Side	Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY C3040-4, Component Side

Measure the component side resistance between:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY C3039-3, Component Side	Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY C3039-4, Component Side

Are the resistances between 4000 and 10, 000 ohms?

Yes

GO to U4

If the backrest blower motor resistance measurement failed, INSTALL a new backrest blower motor: REFER to: Front Seat Backrest Blower Motor . REFER to: Front Seat Backrest Blower Motor - Vehicles With: Black Label Trim . GO to U5. If the cushion blower motor resistance measurement failed, INSTALL a new cushion blower motor. REFER to: Front Seat Cushion Blower Motor . GO to U5

U4 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the SCME connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins as necessary
- pushed-out pins - install new pins as necessary

Reconnect the SCME connectors. Make sure they seat and latch correctly.

NOTE: Do not reconnect Passenger Side Airbag In-line C3049 at this time.

Reconnect all previously disconnected connectors.

Ignition ON.

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 SCME. REFER to: Front Seat Climate Control Module [SCME] . GO to U5

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. GO to U5

U5 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY
- REFER to: Supplemental Restraint System (SRS) Depowering .
- Connect: Passenger Side Airbag In-line C3049 .
- Connect all previously disconnected connectors.
- REFER to: Supplemental Restraint System (SRS) Repowering .
Did the SRS prove out successfully?

Yes Repair is complete. RETURN the vehicle to the customer.

No REFER to: Airbag Supplemental Restraint System (SRS) .