Pinpoint Test K: The Driver Memory Seat Does Not Operate Using The Memory Set Switch

Refer to MEMORY SEATS for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Front Seats - System Operation and Component Description .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
DDM B1C03:23	Memory #1 Switch: Signal Stuck Low	If a short to ground is sensed on the switch input circuit during the DDM self-test, the DTC is set. If activity is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.
DDM B1C04:23	Memory #2 Switch: Signal Stuck Low	If a short to ground is sensed on the switch input circuit during the DDM self-test, the DTC is set. If activity is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.
DDM B1C05:23	Memory #3 Switch: Signal Stuck Low	If a short to ground is sensed on the switch input circuit during the DDM self-test, the DTC is set. If activity is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.

Possible Sources

Memory seat hard/soft stops not set correctly
Wiring, terminals or connectors
Memory SET control switch
Missing ignition status information
DDM

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.

K1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, perform self-test on the DSM and DDM. If the diagnostic scan tool does not communicate to the DSM and/or DDM, REFER to: Controller Area Network (CAN) Module Communications Network .

Are any Diagnostic Trouble Codes (DTCs) present?

Yes	For DDM DTC B1C03:23, B1C04:23 or B1C05:23, GO to K2 For all other DDM Diagnostic Trouble Codes (DTCs), REFER to: Locks, Latches and Entry Systems For DSM Diagnostic Trouble Codes (DTCs), REFER to DTC Chart: DSM .

GO to K2

K2 MONITOR DDM (DRIVER DOOR MODULE) PARAMETER IDENTIFICATIONS (PIDS) AND CHECK FOR CORRECT MEMORY SET SWITCH INPUTS

While activating the memory recall 1, 2 and 3 buttons, monitor the following DDM memory recall switch status Parameter Identifications (PIDs) using a diagnostic scan tool:
- Access the DDM and monitor the MEMORY_SW_1 PID
- Access the DDM and monitor the MEMORY_SW_2 PID
- Access the DDM and monitor the MEMORY_SW_3 PID

Do the PID values agree with the switch button positions?

Yes	Using the seat control switch, OPERATE the driver memory seat to the full travel of each seat axis to reset the hard/soft stops. Operate the system and determine if the concern is still present. If the seat does not operate correctly in any direction, GO to Pinpoint Test I

GO to K3

K3 CHECK THE MEMORY SET SWITCH INPUTS

Ignition OFF.

Disconnect: Driver Seat Control Switch C545.

Ignition ON.

Monitor the following DDM memory recall switch status Parameter Identifications (PIDs) using a diagnostic scan tool:
- Access the DDM and monitor the MEMORY_SW_1 PID
- Access the DDM and monitor the MEMORY_SW_2 PID
- Access the DDM and monitor the MEMORY_SW_3 PID

NOTE: When performing these steps, it is possible that the memory seat may move to a previously stored memory seat position.

Monitor the MEMORY_SW_1 switch status PID while momentarily connecting a fused jumper wire as shown below:

Positive Lead	Measurement / Action	Negative Lead
C545-11	Courtesy of FORD MOTOR COMPANY	Ground

Monitor the MEMORY_SW_2 switch status PID while momentarily connecting a fused jumper wire as shown below:

Positive Lead	Measurement / Action	Negative Lead
C545-12	Courtesy of FORD MOTOR COMPANY	Ground

Monitor the MEMORY_SW_3 switch status PID while momentarily connecting a fused jumper wire as shown below:

Positive Lead	Measurement / Action	Negative Lead
C545-13	Courtesy of FORD MOTOR COMPANY	Ground

Do the PID values change when the jumper wire is connected?

Yes	INSTALL a new driver seat control switch. REFER to: Front Seat Control Switch .

GO to K4

K4 CHECK THE MEMORY SET CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect: DDM C501A and C501B.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C545-11	Courtesy of FORD MOTOR COMPANY	Ground
C545-12	Courtesy of FORD MOTOR COMPANY	Ground
C545-13	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the affected circuit.

GO to K5

K5 CHECK THE MEMORY SET SWITCH CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C545-11	Courtesy of FORD MOTOR COMPANY	Ground
C545-12	Courtesy of FORD MOTOR COMPANY	Ground
C545-13	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to K6

No	REPAIR the affected circuit.

K6 CHECK THE MEMORY SET SWITCH CIRCUITS FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C545-11	Courtesy of FORD MOTOR COMPANY	C501B-3
C545-12	Courtesy of FORD MOTOR COMPANY	C501B-5
C545-13	Courtesy of FORD MOTOR COMPANY	C501B-4

Positive Lead	Measurement / Action	Negative Lead
C545-1	Courtesy of FORD MOTOR COMPANY	C501A-17

Are the resistances less than 3 ohms?

Yes

GO to K7

No	REPAIR the affected circuit.

K7 CHECK THE DDM (DRIVER DOOR MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all of the DDM 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 DDM connectors. Make sure they seat and latch correctly.

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 DDM. REFER to: Driver Door Module (DDM) .

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.