Pinpoint Test Ag : The LH Rear Multi-Contour Seat Module (SCMC) Does Not Respond To The Diagnostic Scan Tool

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

AG1 CHECK THE LH REAR MULTI-CONTOUR SEAT MODULE (SCMC) VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: LH Rear Multi-Contour Seat Module (SCMC) C3721 .

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3721-1	Courtesy of FORD MOTOR COMPANY	Ground

Are the voltages greater than 11 volts?

Yes

GO to AG3

No	VERIFY the BJB fuse 93 (15A) is OK. If OK, GO to AG2 If not OK, REPAIR the circuit.

AG2 CHECK THE REAR MULTI-CONTOUR SEAT RELAY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect BJB C1035D .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1035D-10	Courtesy of FORD MOTOR COMPANY	C3721-1

Is the resistance less than 3 ohms?

Yes

GO to AG6

No	REPAIR the circuit.

AG3 CHECK THE LH REAR MULTI-CONTOUR SEAT MODULE (SCMC) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3721-16	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance less than 3 ohms?

Yes

GO to AG4

No	REPAIR the circuit.

AG4 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE LH REAR MULTI-CONTOUR SEAT MODULE (SCMC) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C2803 .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3721-8	Courtesy of FORD MOTOR COMPANY	C2803-23
C3721-7	Courtesy of FORD MOTOR COMPANY	C2803-22

Are the resistances less than 3 ohms?

Yes

GO to AG5

No	REPAIR the circuit in question.

AG5 CHECK FOR CORRECT LH REAR MULTI-CONTOUR SEAT MODULE (SCMC) OPERATION

Ignition OFF.

Disconnect and inspect all the LH Rear Multi-Contour Seat Module (SCMC) connectors and related in-line 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 LH Rear Multi-Contour Seat Module (SCMC) connectors and related in-line 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 LH Rear Multi-Contour Seat Module (SCMC). Refer to: Rear LH Multi-Contour Seat Module [SCMC] .

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.

AG6 CHECK OPERATION OF THE INTERIOR LIGHTING
- Check operation of the interior lamps (dome lamp, courtesy lamps, luggage compartment lamp, etc).
Are the interior lamps operating normally?

Yes GO to AG7

No DIAGNOSE the demand LP/battery saver relay. Refer to: Interior Lighting .

AG7 CHECK THE REAR MULTI-CONTOUR SEAT RELAY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect BCM C2280B .

Disconnect BJB C1035C .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280B-16	Courtesy of FORD MOTOR COMPANY	C1035C-15

Is the resistance less than 3 ohms?

Yes

GO to AG8

No	REPAIR the circuit.

AG8 CHECK FOR CORRECT BJB (BATTERY JUNCTION BOX) OPERATION

Ignition OFF.

Disconnect and inspect the BJB connector.

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 BJB connector. Make sure it seats and latches 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 BJB. The rear multi-contour seat relay is not serviceable.

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.