Pinpoint Test K : The RH (Right-Hand) Power EZ Entry Seat Is Inoperative

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

K1 CHECK MANUAL EZ ENTRY RELEASE OPERATION OF THE SEAT

Pull the release lever and check the manual release operation.

Does the seat release manually?

Yes

GO to K2

No	DISASSEMBLE the seat as necessary to CHECK the cables and cable mounting for disconnection. CHECK latch release mechanism and latch feet for binding or damage. REPAIR or INSTALL a new seat frame assembly if needed. TEST the system for normal operation.

K2 CHECK THE DOOR AJAR SWITCH OPERATION
- Open and close the LH rear passenger door. Verify the interior lights turn on when the door is open, and off when the door is closed.
Did the interior lights operate normally?

Yes GO to K3

No DIAGNOSE the interior lighting system. REFER to:INTERIOR LIGHTING .

K3 CHECK THE SECOND ROW EZ ENTRY SEAT CONTROL SWITCH OPERATION

Ignition OFF.

Disconnect: SCMJ C4250C .

While pressing and releasing the second row EZ entry seat control switch, measure:

Positive Lead	Measurement / Action	Negative Lead
C4250C-7	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance less than 10 ohms with the switch depressed, and greater than 10, 000 ohms when not pressed?

Yes

GO to K6

GO to K4

K4 CHECK THE SECOND ROW EZ ENTRY SEAT CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN

Disconnect: RH Second Row Seat Release EZ Entry Switch C3681 .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3681-2	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance less than 3 ohms?

Yes

GO to K5

No	REPAIR the circuit.

K5 CHECK THE SECOND ROW EZ ENTRY SEAT CONTROL SWITCH CIRCUIT FOR AN OPEN OR SHORT TO GROUND

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3681-6	Courtesy of FORD MOTOR COMPANY	Ground

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3681-6	Courtesy of FORD MOTOR COMPANY	C4250C-7

Is the resistance greater than 10, 000 between the second row EZ entry seat control switch and ground, and less than 3 ohms between the second row EZ entry seat control switch and SCMJ?

Yes	INSTALL new second row EZ entry seat control switch. REFER to: Second Row Single Seat Easy Entry Seat Fold Switch .

No	REPAIR the circuit.

K6 CHECK THE SECOND ROW SEAT RELEASE EZ ENTRY MOTOR OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE

Disconnect: SCMJ C4250D .

Disconnect: RH Second Row Seat Release EZ Entry Motor C3346 .

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4250D-10	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit.

GO to K7

K7 CHECK THE SECOND ROW SEAT RELEASE EZ ENTRY MOTOR OUTPUT CIRCUIT FOR AN OPEN OR SHORT TO GROUND

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4250D-10	Courtesy of FORD MOTOR COMPANY	Ground

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4250D-10	Courtesy of FORD MOTOR COMPANY	C3346-1

Is the resistance greater than 10, 000 between the SCMJ and ground, and less than 3 ohms between SCMJ and the second row seat release EZ entry motor?

Yes

GO to K8

No	REPAIR the circuit.

K8 CHECK THE SECOND ROW SEAT RELEASE EZ ENTRY MOTOR WITH A FUSED JUMPER WIRE INSTALLED

Ignition OFF.

Connect: RH Second Row Seat Release EZ Entry Motor C3346 .

Momentarily connect a fused jumper wire:

Positive Lead	Measurement / Action	Negative Lead
C4250A-4	Courtesy of FORD MOTOR COMPANY	C4250D-10

Did the seat operate correctly with the jumper wire connected?

Yes

GO to K9

No	INSTALL a new RH seat frame assembly. REFER to: Second Row Seat .

K9 CHECK THE SCMJ (POWER FOLD SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the SCMJ 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 SCMJ connector. Make sure it seats and latches correctly.

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 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, INSTALL a new SCMJ. REFER to:Power Fold Seat Module (PFSM) .

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.