Question about 2000 Lincoln Town Car

2 Answers

Driver side electronic seat adjuster makes ratcheting sound but seat does not move. Also, memory selection is non operational

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  • weprice May 12, 2010

    Most of the information submitted by drsinister69 was plain logic. The first thing I did was to look under the seat for any foreign object that might be obstructing movement. I was hoping to get information from someone who actually removed the driver's seat and made a repair. A schematic of the of the operation might also be helpful. Thanks.

  • weprice May 12, 2010

    Thank you!

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2 Answers

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  • Lincoln Master
  • 17,970 Answers

For Town Car 1999-2005 check this procedure about...
Seats - Power Seat Motor
Removal & Installation

  1. While the seat is still in the vehicle, remove the rear Torx® head motor retaining screw from the track assembly.
  2. Run the seat motor to align the gear with the notches in the track assembly.
  3. Remove the seat and track assembly.
  4. Remove the seat back as follows:
    1. Remove the recliner release lever handle, bezel and spacer, if equipped.
    2. Remove the seat back release knob and bezel, if equipped.
    3. Pull back the rear outboard cushion trim cover at the carpet and remove the push pin from the frame.
    4. Remove the 2 rear (one upper and one lower) hog rings to expose the lower recliner latch or 4-door recliner lock out plate.
    5. Remove the 2 retaining bolts and cable retainer, if equipped.
    6. Lift the seat back upward and pull outboard to disengage the center hinge.
    7. Remove the seat back.
  5. Detach the seat control from the track assembly at the connectors.
  6. Remove the upper and lower shield(s) from the outboard side of the seat cushion, if equipped.
  7. Remove the 4 bolts retaining each track to the seat frame.
  8. Remove the nut retaining the seat belt buckle to the track and remove the center occupant belt from the mounting slot.
  9. Remove the track and motor assembly from the seat.
  10. Remove the assist springs.
  11. Tap out the roll pins retaining the inner track assembly to the motor and outer track assembly.
  12. Remove the 2 motor retaining nuts and remaining Torx® head screw.
  13. Carefully separate the motor from the seat track assembly.
  14. Remove the drive cross shaft.
To install:
  1. Position the motor to the seat track assembly. Make sure the guide is in place around the gear.
  2. Install the motor retaining nuts and front Torx® head screw.
  3. Assemble the inner track assembly and drive cross shaft to the outer track and motor assembly.
  4. Install the roll pins. Make sure the tracks are aligned in proper position.
  5. Install the assist springs.
  6. Position the track and motor assembly to the seat cushion.
  7. Install the 4 track-to-cushion retaining bolts.
  8. Install the center occupant belt through the mounting slot and install the seat belt buckle and retaining nut to the track.
  9. Install the upper and lower shield(s) to the outboard seat cushion, if equipped.
  10. Attach the seat control to the track assembly at the connectors.
  11. Install the seat back in the reverse order of removal.
  12. Install the seat in the vehicle.
  13. Position the seat to allow the rear Torx® head screw to be installed.
  14. Check the seat for proper operation.

Power Front Seats
  1. Disconnect the negative battery cable.
  2. Remove the access covers from the lower shields, if equipped, or insulators, if equipped, to expose the nuts and washers and/or bolts.
  3. Remove the nuts and washers and/or bolts retaining the seat track to the floorpan.
  4. Lift the seat up enough to disconnect the seat harness connector and disconnect the connector.
  5. On certain models, remove the bolt(s) attaching the seat belts to the floor.
  6. Remove the seat and track assembly from the vehicle.
  7. Installation is the reverse of the removal procedure.

Also, check this wiring diagrams for Power Seat


Driver side electronic seat adjuster makes - 0102dda.jpg

Fig. Power Seats, Page 01 (2000, Carey Town Car)


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Fig. Power Seats, Page 02 (2000, Carey Town Car)

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Fig. Power Seats, Page 03 (2000, Carey Town Car)


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Fig. Power Seats, Page 04 (2000, Carey Town Car)



If you need the wiring abour Memory Set, keep in touch.

Good luck.
















Posted on May 12, 2010

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  • Master
  • 2,317 Answers

There are electric motors that move the seat, usually 3, 1 for moving back and forth, 1 for moving up and down, and then 1 for the seat tilt. These motors often run cables or screw rods to move the seat accordingly. I would figure that a linkage of some sort my have come undone, or broke. Since there is a problem with seat track assembly, the memory selection is not going to be able to move the seat to that setting, so it does nothing. You'll need to look at the seat track assembly to see if anything is broken or binding. Also check the seat tracks for anything blocking them.

Posted on May 12, 2010

  • James Milzheimer
    James Milzheimer May 12, 2010

    Sorry that I couldn't supply more information for your problem. I have worked on a lot of power seats, just not on any 2000 Lincoln's yet. I try to be as specific as I can. I hope you can solve your problem.

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1 Answer

2009 Buick Lucerne, power driver seat won't adjust on seat or through memory button. Passenger seat works fine. Heater for both seats won't turn on. Checked fuses and relays, all ok


Your best bet , have it checked for DTC'S - diagnostic trouble codes first ! Electronic control modules involved ! Can't check with a OBD 2 code reader , need advanced scan tool . No codes , check B+ voltage and ground to the module .
Power Seat Inoperative (With Memory A45)
Memory Seat Feature Inoperative
Circuit/System Description
Battery voltage is supplied at all times to the memory seat module (MSM) from the MDL-MEM 10A fuse located in the rear fuse block. This voltage is used by the MSM for logic power and to supply battery reference voltage to the seat and lumbar adjuster switches. Battery positive voltage is also supplied at all times to the MSM from the PWR SEAT 25A circuit breaker. This voltage is connected to a power rail internal to the MSM and is used to drive the power seat motors, lumbar motors, and seat heater elements on vehicles equipped with heated seats. Each seat and lumbar adjuster motor is controlled by the MSM through 2 motor control circuits. The MSM connects all motor control circuits on the power rail to a common reference point whenever they are not in operation. This reference point is biased to approximately 2.5 volts. The MSM checks to see if the reference voltage is shorted to ground or battery before enabling any of the seat or lumbar motors.

Circuit/System Description
Reference voltage is supplied to the memory switch from the driver door module (DDM). When a memory switch is pressed, reference voltage is applied through the switch contacts, a series of resistors and thorough the memory switch signal circuit to the DDM. The door module then sends a serial data message to the memory seat module (MSM) indicating the memory recall request. The MSM then commands the appropriate seat motors to move to the pre-recorded seat positions stored in memory in response to the switch input.

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1 Answer

2006 LINCOLN ZEPHYR DRIVERS ELECTRIC SEAT WILL NOT MOVE BACK WHEN KEY IS TURNED OFF


Principles of Operation
The driver seat module (DSM) is on the controller area network (CAN) communication network. To support several vehicle subsystems, the module permits intermodule and diagnostic tool communications.
The DSM controls the memory driver seat and the passenger memory power exterior mirror. This passenger memory power exterior mirror feature allows the driver to program personalized mirror positions. Once the driver stores a mirror position, the driver can recall the setting by pressing the corresponding memory switch or by using a programmed remote keyless entry (RKE) transmitter. For additional information, refer to Section 501-10 .

How to Diagnose Controller Area Network CAN

Driver Seat Module - Memory Seat
The power driver seat, power outside rear view mirrors and power adjustable pedals are controlled by the driver seat module (DSM) only when the vehicle is equipped with the programmable/recall memory option. The DSM is located on the driver seat track.
This system allows automatic positioning of the driver seat to 2 programmable positions.
  • A power driver seat position can be stored at any time. The driver must move the seat to the desired position using the driver seat switch assembly. The driver must then depress the memory SET switch which activates the memory SET switch light emitting diode (LED). Within 5 seconds (before the LED goes out), the driver must select a memory position. Memory 1 is selected by depressing memory switch 1. Memory 2 is selected by depressing memory switch 2.
  • If no memory switch input is received within the 5-second time limit, the operation is aborted and the memory seat position switch (set switch) LED is turned OFF. This also occurs if one of the following inputs is received during the 5-second programming limit:
    • Driver seat control switch
    • Memory seat position switch (set switch)
    • Power adjustable pedal switch
A programmed seat position can only be recalled when the transmission selector is in PARK or NEUTRAL with the ignition switch in the RUN position. A position may be programmed at any time.

Easy Entry/Easy Exit
The driver power seat easy entry/easy exit feature can be enabled/disabled. Refer to Section 418-01 or the owner's literature.

This may need to be done with a scan tool

Apr 24, 2017 | Lincoln Cars & Trucks

1 Answer

The front seats for our 2003 Escalade will not move forward or backward and the heat control for the front seats will not work.


Does your Escalade have memory seats ?
There are 2 options of power seat systems available in full size trucks. The 6 way driver and passenger power seats, and 8 way driver and passenger power seats with driver memory. For the driver memory seat operation refer to Memory Seats Description and Operation . Power seats without memory are completely controlled through the power seat switch. Battery voltage is supplied to the power seat switch through the power seat circuit breaker. While the seat adjuster switches are in an inactive state the switch contacts are closed to the power seat switch ground circuit. When a power seat switch is pressed to an active state the switch contact is closed to the battery voltage supply circuit. Each seat adjuster motor is controlled by the power seat switch through 2 motor control circuits. The seat adjuster motors are bidirectional and the direction of adjuster motor rotation is determined by which of the adjuster motor control circuits is switched to battery voltage while the other remains grounded.

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1 Answer

Ford 2008 expedition, power drivers seat won't recline, but everything else works.


Power Recliner
The driver seat has an electro-mechanical backrest adjuster. The backrest adjustment switch is located on the side of the seat cushion side shield and is part of the seat control switch. The recliner motor is mounted to the backrest frame. Power recliners and motors are only serviceable by installing a new backrest frame assembly.
Does yours have Driver and Passenger Power Seats Without Memory Or Power Driver Seat With Memory ?

B1666 Seat Driver Recline Motor Stalled On-Demand If the motor does not operate, Go To Pinpoint Test L . If motor operates, Go To Pinpoint Test M . Take it an have it check !
Does your

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1 Answer

GMC Yukon Seat Switch


You don't mention what year your Yukon is ? This could very well be a control Module problem .
I'll post how the power memory seat's work or are suppose to work !

Memory Seats Description and Operation

Battery voltage is supplied to the memory seat module through a 25 A circuit breaker. The memory seat module supplies the seat adjuster switch assembly with a battery positive reference voltage. While the seat adjuster switches are in an inactive state the switch contacts are closed to the adjuster switch common circuit. When a seat adjuster switch is pressed to an active state the switch contact is closed to the reference voltage circuit. Battery voltage on a switch signal circuit indicates to the memory seat module the switch status is active. Each seat adjuster motor is controlled by the memory seat module through 2 motor control circuits. While the seat adjuster motors are in an inactive state the motor control circuits are closed to ground circuit contacts within the memory seat module. The memory seat module operates the seat adjuster motors by switching one of a motors control circuits to battery voltage. The seat adjuster motors are bidirectional and the direction of adjuster motor rotation is determined by which of the adjuster motor control circuits is switched to battery voltage while the other remains grounded.


Memory Set/Recall Operation
The seat adjuster motors are equipped with internal position sensors. The adjuster motor position sensors are monitored by the memory seat module and are used to determine the seat position when storing or recalling memory settings. The driver seat adjuster motors use potentiometer type position sensors. The position sensors are supplied with a 5 V reference and ground circuits from the memory seat module. The position sensor signal circuits return to an analog input within the memory seat module. During adjuster motor operation the position sensor provides a voltage change proportional to the change in revolution of the adjuster motor shaft. The memory seat module monitors the voltage from the position sensor signal circuits to determine the adjuster motor positions when storing or recalling memory seat position settings.
The memory recall switch assembly on the driver door provides inputs to the driver door lock/window switch. Battery voltage is supplied to the memory recall switch assembly from the driver door lock/window switch. When a RCL 1, RCL 2, or EXIT switch is pressed, the switch contacts close the appropriate switch signal circuit to the battery voltage supply circuit within the memory recall switch assembly. When the driver door lock/window switch receives active switch signals from the memory recall switch assembly, the appropriate commands are sent to the memory seat module using the GMLAN Serial Data circuit. The Body Control Module software version determines the personalization features available.
Memory seat recall operation is allowed only with the transmission selector lever in the PARK position while the ignition is on. The transmission selector lever position data is provided to the memory seat module by a message through the GMLAN Serial Data circuit.

There are somethings listed you are not familiar with , like GMLAN Serial Data circuit ,maybe Body Control Module software etc... GMLAN is a communincation network that the computers on the vehicle uses to share information , transmit commons etc... you can google it to read about it .

There are DTC'S - diagnostic trouble codes that can set in the module in control . Do you know what DTC'S are .

DTC Descriptors
DTC B1825 01: Driver Seat Recline Position Sensor Circuit Short to Battery
DTC B1825 06: Driver Seat Recline Position Sensor Circuit Short to Ground or Open
DTC B1825 5A: Driver Seat Recline Position Sensor Circuit Plausibility Failure
DTC B1850 01: Driver Seat Lumbar Horizontal Position Sensor Circuit Short to Battery
DTC B1850 06: Driver Seat Lumbar Horizontal Position Sensor Circuit Short to Ground or Open
DTC B1850 5A: Driver Seat Lumbar Horizontal Position Sensor Circuit Plausibility Failure
DTC B1860 01: Driver Seat Lumbar Vertical Position Sensor Circuit Short to Battery
DTC B1860 06: Driver Seat Lumbar Vertical Position Sensor Circuit Short to Ground or Open
DTC B1860 5A: Driver Seat Lumbar Vertical Position Sensor Circuit Plausibility Failure
DTC B2355 01: Driver Seat Front Vertical Position Sensor Circuit Short to Battery
DTC B2355 06: Driver Seat Front Vertical Position Sensor Circuit Short to Ground or Open
DTC B2355 5A: Driver Seat Front Vertical Position Sensor Circuit Plausibility Failure
DTC B2365 01: Driver Seat Rear Vertical Position Sensor Circuit Short to Battery
DTC B2365 06: Driver Seat Rear Vertical Position Sensor Circuit Short to Ground or Open
DTC B2365 5A: Driver Seat Rear Vertical Position Sensor Circuit Plausibility Failure
DTC B2375 01: Driver Seat Assembly Horizontal Position Sensor Circuit Short to Battery
DTC B2375 06: Driver Seat Assembly Horizontal Position Sensor Circuit Short to Ground or Open
DTC B2375 5A: Driver Seat Assembly Horizontal Position Sensor Circuit Plausibility Failure

5) Memory Seat Module is under the front of the driver seat , you could look under an see if all the connectors are fully seated.

The best diagnostic step would be to hook up the factory scan tool an see what the computer is seeing as far as inputs from the switch an outputs it's sending . I wouldn't suggest you take the seat apart an try testing electrical inputs etc.... unless you very familiar with automotive electrical systems an circuits .

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1 Answer

I own a 2003 Chevy Truck S10/T10 P/U 2WD V6-4.3L VIN X My driver's seat has locked in one sitting position and the hand lever is not locked up, it moves freely but does not engage so that the back...


You should have a ratchet assembly at each end of the seat with a wire connecting the two. Look under the seat and see if when you pull the adjuster, it should release both sides at once. Also check if the wire is attached at all.

Jul 24, 2011 | 2003 Chevrolet S-10

1 Answer

I have a 2006 lincoln ls sport and the drivers seat is stuck in one position there is only power to the lumbar


The dirver seat module is attached to the underside of the seat frame. It must be calibrated if replaced. The dealer can use a tool to get failure codes (DTCs) from teh module. 1/2 hour labor charge to extract codes.


Front Seats
The front seats have the following features:
  • Driver memory
  • Power lumbar (optional)
  • Manual lumbar
  • Horizontal, vertical front and rear tilt adjustments (driver)
  • Horizontal, vertical front tilt adjustment (passenger)
  • Power recline
  • Climate controlled (optional)
Adjustment of the seat may be accomplished with the seat control switch located on the side of the seat.
--------------------------------------------------------------------
Principles of Operation
Driver Power Seat - Memory
NOTE: The memory power seat track may stall when operating at 0°C (32°F) or below. Once the vehicle's interior temperature rises above 0°C (32°F), normal operation should return.
The driver power seat is controlled by the driver seat module (DSM). The DSM does not need to be configured, however the driver seat does need to be calibrated when the DSM is installed. The driver seat control switch provides voltage to the DSM when activated. The NEUTRAL position of each driver seat control switch position is a ground state through the seat control switch contacts. A voltage input causes the DSM to power the appropriate motor until the input is removed. Ground is the normal state of the motor circuits through the DSM and is not switched to control the motors. The DSM internally switches the appropriate line from ground to power to adjust the motors.
As the seat is adjusted, the DSM constantly monitors the motor position sensors to record the current seat position. The DSM will remove power from the motor upon termination of the seat control switch input or if the DSM does not see movement from the motor by monitoring the position sensor. The DSM must be calibrated to the seat track it is controlling. For additional information, refer to Seat Calibration. Once the DSM is calibrated to the seat track, it will only allow movement within the calibrated range.
Seat Calibration
The DSM is calibrated using a diagnostic tool. The calibration procedure automatically powers the driver power seat through its full range of motion and records the FULL STOP positions by monitoring the motor position sensors. Once the FULL STOP positions or range of the seat have been recorded, the DSM will only operate within the calibrated range. Any input attempting to drive the seat beyond the calibrated range will be ignored. This calibration is used for all seat control functions including manual switch control and memory recall positioning. During the seat calibration, the DSM may identify a function that is inoperative, such as a position sensor not changing. If the DSM identifies a concern that has a related diagnostic trouble code (DTC), the DSM will set the related DTC at the end of the validation procedure.
The calibration procedure powers the seat track adjustments to the end of their travel, which is determined by the DSM sensing a change of state in the motor position sensors. If there is a concern with the seat track or motor position sensor that limits the travel, the DSM will interpret the stopping point as the end of travel and store the position. The DSM is not able to determine if the seat has moved to its FULL TRAVEL position. It is only capable of monitoring and storing the amount of travel seen by the position sensor changing states.
For additional information on carrying out the power seat calibration procedure, refer to the diagnostic tool operating manual.
Memory Seat
Memory seat positioning can be recalled with the memory switches on the driver door panel or a programmed remote keyless entry transmitter. In either case, the DSM receives a memory recall 1 or 2 command from the driver door module (DDM) over the SCP communication network. The memory recall switches are a hardwired input to the DDM. The DDM also receives the remote keyless entry transmitter signals. Once a valid memory recall command is received from the DDM, the DSM moves the driver seat to the position stored in memory by powering the appropriate motors and monitoring the motor position sensors until the position is reached.
This system allows automatic positioning of the driver seat to 2 programmable positions.
  • To program position 1, move the driver seat to the desired position using the seat control switch. Depress the set button. Within 5 seconds, depress button 1.
  • To program position 2, repeat the previous procedure using the set button and button 2.
  • To recall position 1, depress button 1. To recall position 2, depress button 2.
A position can only be recalled when the transmission selector is in PARK or NEUTRAL. A position may be programmed at any time.
Easy Exit/Easy Entry
The easy exit function moves the seat backwards about 2 inches when the ignition key is removed from the ignition switch. The DSM receives a key out command over the SCP communication network and powers the driver seat rearward. This function will not operate if the seat is less than the travel distance to the end of the track, or the function has been deactivated at the message center driver personality settings. The DSM will also cancel this operation if a valid input command is received, such as the seat control switch or memory recall request.
The DSM will record the current seat position before powering the seat for an easy exit function. This recorded position will be used to return the seat to this position on the easy entry operation. During easy entry operation, the seat is returned to the position previous to the easy exit operation. Easy entry operation will be cancelled if a valid input command is received by the DSM.
Passenger Power Seat
The passenger power seat motors are hardwired to the passenger seat control switch. The circuits are normally at ground through the seat control switch. The individual circuit is switched to power when the specific adjustment position is selected.
-----------------------------------------------------------------------------------------------------------------------------
Visual Inspection Chart Mechanical Electrical
  • Front seat track motors
  • Front seat track binding or obstructed
  • Front seat backrest power recline
  • Lumbar motor
  • Climate controlled seat ducts
  • Driver door module fuse(s):
    • Central junction box (CJB) fuse 7 (5A)
    • CJB fuse 22 (10A)
  • Driver seat module fuse(s):
    • Battery junction box (BJB) fuse 21 (20A)
    • CJB fuse 7 (5A)
  • Passenger power seat BJB fuse 28 (20A)
  • Rear heated seat fuse(s):
    • BJB 11 (20A)
    • CJB fuse 16 (5A)
  • Driver power lumbar BJB fuse 21 (20A)
  • Passenger power lumbar BJB fuse 28 (20A)
  • Driver and passenger climate controlled seat module fuse(s):
    • BJB fuse 26 (30A)
    • CJB fuse 16 (5A)
  • Seat control switch
  • Memory set switch
  • Lumbar seat control switch
  • Seat fan motor
  • Climate controlled seat module
  • Climate controlled seat switch

Jan 14, 2011 | 2001 Lincoln LS

1 Answer

Power mirrors, driver power seat, adjustable pedals all don't work... checked fuses and all ok... Any suggestions?


it sounds like the driver seat module. It controls all of these items.
buy used at car-part.com. look on page with * for lowest price.
buy new at discount at tascafordparts.com

  • The memory mirror is inoperative
  • Driver seat module (DSM).
  • Circuitry.
  • CJB fuse 3 (7.5A).
  • Exterior mirror motor.
  • Mirror control switch.


  • The memory seat is inoperative
  • Circuitry.
  • Seat control switch.
  • Seat track.
  • DSM.
  • PDJB Fuse 109 (30A).
  • Power seat motor.


  • Adjustable brake pedal does not operate correctly — does not operate using the adjustable pedal switch
  • Battery junction box (BJB) fuses:
    • 109 (30A).
  • Circuitry.
  • Switch.
  • Adjustable pedal motor.
  • Driver Seat Module (DSM

Oct 02, 2009 | 2003 Ford Expedition

1 Answer

2001 Lincoln LS Easy Entry power seat function


may need dealer to reclaibrate using his tool.

Principles of Operation
Driver Power Seat The driver power seat is controlled by the driver seat module (DSM). The DSM does not need to be configured, however the drive seat does need to be calibrated when the DSM is installed. The driver seat regulator control switch provides voltage to the DSM when activated. The neutral position of each driver seat regulator control switch position is a ground state through the seat regulator control switch contacts. A voltage input causes the DSM to power the appropriate motor until the input is removed. Ground is the normal state of the motor circuits through the DSM and is not switched to control the motors. The DSM internally switches the appropriate line from ground to power to adjust the motors.
As the seat is adjusted, the DSM constantly monitors the motor position sensors to record the current seat position. The DSM will remove power from the motor upon termination of the seat regulator control switch input or if the DSM does not see movement from the motor by monitoring the position sensor. The DSM must be calibrated to the seat track it is controlling. For additional information, refer to Seat Calibration. Once the DSM is calibrated to the seat track, it will only allow movement within the calibrated range.
Seat Calibration The DSM is calibrated using a scan tool. The calibration procedure automatically powers the driver power seat through its full range of motion and records the full stop positions by monitoring the motor position sensors. Once the full stop positions or range of the seat have been recorded, the DSM will only operate within the calibrated range. Any input attempting to drive the seat beyond the calibrated range will be ignored. This calibration is used for all seat control functions including manual switch control and memory recall positioning. During the seat calibration, the DSM may identify a function that is inoperative, such as a position sensor not changing. If the DSM identifies a concern that has a related diagnostic trouble code (DTC), the DSM will set the related DTC at the end of the validation procedure.
The calibration procedure powers the seat track adjustments to the end of their travel, which is determined by the DSM seeing a change of state in the motor position sensors. If there is a concern with the seat track or motor position sensor that limits the travel, the DSM will interpret the stopping point as the end of travel and store the position. The DSM is not able to determine if the seat has moved to its full travel position. It is only capable of monitoring and storing the amount of travel seen by the position sensor changing states.
For additional information on carrying out the power seat calibration procedure, refer to the scan tool operating manual.
Memory Seat Memory seat positioning can be recalled with the memory switches on the driver door panel or a programmed remote keyless entry transmitter. In either case, the DSM receives a memory recall 1 or 2 command from the driver door module (DDM) over the SCP communication network. The memory recall switches are a hardwired input to the DDM. The DDM also receives the remote keyless entry transmitter signals. Once a valid memory recall command is received from the DDM, the DSM moves the drivers seat to the position stored in memory by powering the appropriate motors and monitoring the motor position sensors until the position is reached.
Easy Exit/Easy Entry The easy exit function moves the seat backwards about two inches when the ignition key is removed from the ignition switch. The DSM receives a key out command over the SCP communication network and powers the driver seat rearward. This function will not operate if the seat is less than the travel distance to the end of the track, or the function has been deactivated at the message center driver personality settings. The DSM will also cancel this operation if a valid input command is received, such as the seat regulator control switch or memory recall request.
The DSM will record the current seat position before powering the seat for a easy exit function. This recorded position will be used to return the seat to this position on the easy entry operation. During easy entry operation, the seat is returned to the position previous to the easy exit operation. Easy entry operation will be cancelled if a valid input command is received by the DSM.
Passenger Power Seat The passenger power seat motors are hardwired to the passenger seat regulator control switch. The circuits are normally at ground through the seat regulator control switch. The individual circuit is switched to power when the specific adjustment position is selected.
Heated Seats The driver and passenger heated seats share a common battery and ignition feed. A separate shared ignition source supplies the heated seat switches. When the heated seat switch is pressed with the ignition switch in RUN, a momentary voltage signal is sent to the heated seat module. The heated seat module then supplies power to the heating element circuit. The cushion element and seat backrest element are wired in series and powered by the same output. The heated seat module also will ground the separate indicator circuit at the heated seat switch to indicate an ON state. The heated seat module will remain on until the heated seat switch is pressed and a momentary voltage signal is received, or until 10 minutes expire. If the ignition source is removed from the module, the heated seat module will enter an off state and will not return to ON until the switch is once again pressed with the ignition switch in RUN. The heated seat module is designed to heat the seat to 37.5°C (99.5°F) and maintain the temperature until time-out or switched off. This temperature is maintained by the heated seat module monitoring the temperature sensor located in the seat cushion element, and adjusting the current flow to the heating elements.
Inspection and Verification
  1. Verify the customer concern by operating the system.
  1. Visually inspect for obvious signs of mechanical or electrical damage.

    Visual Inspection Chart Mechanical Electrical
    • Front seat track motors.
    • Front seat track binding or obstructed.
    • Front seat backrest power recline.
    • Lumbar motor.
    • BJB Fuses 411 (15A), 421 (20A), 425 (40A), 428 (20A)
    • CJB Fuses 205 (5A), 216 (5A), 207 (5A)
    • Seat regulator control switch.
    • Memory set switch.
    • Lumbar seat control switch.

May 04, 2009 | 2001 Lincoln LS

1 Answer

My side mirros dont work


The exterior mirrors:
  • are controlled by power controls on the LH front door trim panel.
  • are of a foldaway design.
  • may contain turn signal indicators.
  • may be heated when the heated back window glass is activated.
  • may have a programmable recall memory option.
Driver Seat Module
The power driver seat and power exterior mirrors are controlled by the driver seat module (DSM) only when the vehicle is equipped with the programmable/recall memory option.
---------------------------------------------------------------------
Power Exterior Mirror Operation
The power exterior mirrors are controlled by the DSM and are operational all the time, whether the ignition switch is on or off. Using the power exterior mirror switch, the driver can adjust the driver and passenger exterior mirrors four ways.
-----------------------------------------------------
Visual Inspection Chart Mechanical Electrical
  • Exterior mirror(s)
  • Interior mirror
  • Central junction box (CJB) fuse
  • Circuitry
  • Exterior mirror control switch
  • Exterior mirror motor
  • Interior mirror
  • Driver seat module (DSM)
  • Memory set switch


----------------------------------------------------------------------------------


  1. If the vehicle is equipped with memory exterior mirrors and the concern remains after the inspection, connect the diagnostic tool to the data link connector (DLC) located beneath the instrument panel. Select the vehicle to be tested from the diagnostic tool menu.
    • Check to make sure the program card is correctly installed.
    • Check the connections to the vehicle.
    • Check the ignition switch position.
-------------------------------------------------------------------------------------
  • The mirrors are inoperative
  • Circuitry.
  • Central junction box (CJB) fuse.
  • Exterior mirror control switch.


Apr 07, 2009 | 2003 Lincoln Navigator

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