Question about 1996 Jaguar Vanden Plas

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Memory seat switch does not save seat setting,alhough all motors are working. I am told there is a battery in the circuit which may need replacing, is that correct?

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  • gcnichol Jun 03, 2010

    THANK you, but if you had the circuit plan you could tell if it had a battery...I will have to search for the battery not knowing if there is one.

    But thanks anyway.

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  • Jaguar Master
  • 17,970 Answers

Here's what I have for checking the pots...

Memory Seat checking for bad potentiometers
"You may have a faulty potentiometer for one of the seat movements. The way to check them is to first set all movements to the mid-way position. Then run each one to it's full position and press the memory button. If the led lights up run it fully the other way and press the button. Return it to the mid position and go to the next movement. Check all ranges, front cushion up/down, rear cushion up/down, cushion forward/backward, seat back raise/recline and headrest up/down. Remember to return each one to the mid position before trying the next one. If one fails to light the led you have a bad or out of adjustment potentiometer for that movement function."

I did this and found only the one pot to be off (the one that moves the seat back forward/rear). When I attempt to use my memory seat function the seat back just goes back and back... obviously doesn't 'know' where it is.

Here's what I found on adjusting the pots (contains some testing instructions too)...

Adjusting Potentiometers:
"Remove the seat, tear it apart for access, reinstall it loosely, get out your digital volt meter and get ready.

You have to set each range of motion to the middle position, run it fully one way, press the memory button and hope the LED lights up, run it fully the other way, press the button and hope again and repeat for each of the 8 ways the seat moves. If the LED doesn't light up you have to adjust the potentiometer for that motor. Even the headrest has to be tested. If that one has to be adjusted the rear of the seat has to come apart.

You use a small screwdriver to turn the adjuster screw on each potentiometer while watching the volt meter. Each range of motion should produce a feedback voltage at the limit of its travel. For instance, headrest fully raised--4.36 volts. Fully retracted--0.14 volts. Same for each other range (forward/rearward, seat back recline, etc.)

This is really not something you'd want to get into on your own and I would strongly suggest having a qualified technician do it for you."

Can anyone tell me where the pot is that adjusts the seat back? Seems if I can get access to that pot that I can attempt to adjust it so that the voltages peak as described above... or atleast play with it until I can dial it in.

I apologize for not giving credit where credit is due on these posts... I did not capture the original poster's name. Good luck.

Posted on Jun 03, 2010

  • 1 more comment 
  • gcnichol Jun 03, 2010

    Thank you for your response..but I was told that there is a button battery in the circuit that may need replacing, is there a battery in the circuit...yes or no....thank you.

  • ZJ Limited
    ZJ Limited Jun 03, 2010

    That may
    well be correct.
    Remember that the information settigns is (and keep) stored by a small battery even when the
    computer is off.
    This systems works same way in your phone even if is turn off or when the computer has been turned off; the dates remain
    intact even with the computer off and unplug from electrical alimentation (or if the battery has been withdrawn,
    in the case of mobile).


    Test it.

  • ZJ Limited
    ZJ Limited Jun 03, 2010

    I'm sure that the dealer is obvious, but you can also check with bentley
    publishers. TY for using Fixya.

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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.

Sep 02, 2017 | 2009 Buick Lucerne

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.

Jan 16, 2017 | 2003 Cadillac Escalade

1 Answer

What do I look for to fix the Power seats and power tilt steering has no power


A control module ! Electronics The steering column has a tilt/telescoping control system that consists of an electronic control module capable of class 2 serial data communication, a steering column power assembly with positioning motor and sensor, and a steering column control switch. The multi-function lever provides for the control of the headlamp high beams, and the windshield washer and wiper.
The tilt/telescoping steering column in/out/up/down switch is an input to the driver position module (DPM). The tilt/telescoping drive motor is an output function of the DPM.
Steering column memory settings are stored in the DPM. The steering column position sensor is an internal part of the tilt/telescoping motor assemblies, and is an input to the DPM. The DPM uses the position sensor input when storing and recalling memory settings.
Same thing with the seats , electronic control module .
Battery positive voltage is supplied at all times to the memory seat module (MSM) through the battery positive voltage circuit from the POWER SEATS circuit breaker located instrument panel (I/P) fuse block. This voltage is used to power up MSM and also to apply power to the seat motors when commanded. Battery positive voltage from the TILT/TELE SW/MEM SEAT MOD fuse located in the body control module (BCM) fuse block that supplies voltage to the seat adjuster switch and the memory function switch, also supplies voltage to the MSM. The MSM monitors this voltage circuit in order to determine if battery voltage is supplied to the seat adjuster switch. The MSM is grounded through the module ground circuit and G301.
Body Control Module (BCM)
RH footwell, mounted to the toe board, behind the carpet

Nov 05, 2015 | 2006 Cadillac XLR

1 Answer

I have a 2002 gmc envoy xl. the heat and seat and mirrors work fine, however every time i turn the car on or off the seat shifts all the way forward and the mirrors tilt in. to solve some of the...


Memory Seat System Components
The memory seat system consists of the following components:
• Power Seat Switch
• Seat Horizontal Motor
• Seat Front Vertical Motor
• Seat Rear Vertical Motor
• Seat Recliner Motor
• Driver Seat Module
• Memory Seat Switch

It's not the module , probably sensor supplying bad info to the module.

Memory Set/Recall Operation
The driver seat adjuster motors are equipped with potentiometer type position sensors used by the driver seat module to determine the seat position. The position sensors are supplied with 5-volt reference and ground circuits from the driver seat module. The position sensor signal circuits are referenced from ground within the driver seat module. The signal circuit voltage levels monitored by the driver seat module range from 0.39 - 4.58 volts and are determined by the wiper locations on the resistors within the motor position sensors. The position sensor circuit voltage levels are used by the driver seat module to determine the seat position when storing or recalling memory position settings.
The memory recall switch assembly on the driver's door provides inputs to the driver door module. Battery voltage is supplied to the memory recall switch assembly from the driver door module. When a memory recall 1, 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 module receives active switch signals from the memory recall switch assembly, the appropriate commands are sent to the driver seat module using the Class 2 Serial Data circuit.
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 driver seat module by a message through the Class 2 Serial Data circuit.

Your best bet , take it to a qualified repair shop and have it checked for DTC'S - diagnostic trouble codes .
Install a scan tool.
Observe the switch parameter for which the DTC has set in the seat module Inputs/Outputs data list.
Does the scan tool display Inactive?
DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815, or B1820
DTC B1825, B1850, B1860, B2355, B2365, or B2375
The driver seat adjuster motors are equipped with potentiometer type position sensors used by the driver seat module to determine the seat position. The position sensors are supplied with 5-volt reference and ground circuits from the driver seat module. The position sensor signal circuits are referenced from ground within the driver seat module. The signal circuit voltage levels monitored by the driver seat module range from 0.39-4.58 volts and are determined by the wiper locations on the resistors within the motor position sensors. The position sensor circuit voltage levels are used by the driver seat module to determine the seat position when storing or recalling memory position settings.

$316.00 from doorman

Aug 15, 2017 | GMC Cars & Trucks

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 .

Mar 06, 2017 | GMC Cars & Trucks

1 Answer

I have a 2008 Chevrolet Silverado 1500, extended cab, automatic truck.......PROBLEM, the drivers side has a power seat, it will not move in any direction and the passenger side front and rear power windows...


How to diagnose this problem ? Viewing wiring diagrams to see what all is invovled in these electrical circuit's , check power supply's an ground connection's using a DMM - digital multimeter !
What type power seat's ? does it have memory ,heated an cooled etc ?
Power Seats System Description and Operation
There are 2 options of power seat systems available in full size trucks. The first is 6 way driver and passenger power seats without memory. The second is an 8-way driver seat plus 4-way lumbar with memory, heat and optional cool function. While the passenger has 8-way power seats with heat and optional cool function. 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.

If it has memory seat's there is a control module !
Battery voltage is supplied to the driver seat module through a 25 A circuit breaker. The driver 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.
Both right side windows have a seperate power supply from the left side window's ,has RT DOORS circuit breaker CB1 - 25amp. location left instrument panel fuse block . Circuit breaker's very rarely fail .Do the door lock's work on that side of the vehicle ? The windows won't work with their own switche's ?
The DDS controls the passenger window through a GMLAN message to the PDS. When a power window switch is activated in the up or down positions the PDS supplies power and ground to the window motor control circuits to drive the window motor in the required direction. Prior to activating a power window motor the PDS will supply the control circuit with a low current bias voltage in order to determine that a short to ground condition does not exist, and during window motor operation the PDS continues to monitor the motor current to verify proper window motor operation. (Scan tool support is available for this system)
Check PDM fuse 4 15 amp ,this supply's B+ voltage to the DOORLOCK/WINDOW switch passenger side . Check for broken wires inside the flex boot from the body to the passenger door .

Nov 18, 2017 | Chevrolet Silverado 1500 Cars & Trucks

1 Answer

The six way power seat on my 2005 suburban has an issue. When I turn the motor off and remove the key the motor goes to it's down and back position but continues to run. And it doesn't respond to the...


The first place to start would be to have the dealer or someother qualified repair shop , that has a professional scan tool read DTC'S - diagnostic trouble codes in the driver seat module ! The seat adjuster motors are controlled by the driver seat module through the adjuster motor control circuits. In an inactive state both of the motor control circuits are grounded within the driver seat module. In an active state the driver seat module switches the appropriate motor control circuit to battery positive voltage. The direction of the adjuster motor rotation is determined by which of the motor control circuits is switched to battery positive voltage while the other remains grounded. During adjuster motor operation the driver seat module also monitors the current flow through the motor control circuits.
DTC B1770, B1775, B1780, B1785, B1790, B1805, or B2415
B1825 , B1850, B1860, B1960, B2355, B2365, or B2375
B3962
Memory Seat System Components
The memory seat system consists of the following components:
• Power seat switch assembly
• Memory recall switch assembly
• Horizontal adjuster motor
• Front vertical adjuster motor
• Rear vertical adjuster motor
• Recline adjuster motor
• Driver seat module
• Driver door module
• SEAT 30A circuit breaker
Memory Seat System Description
Battery voltage is supplied to the driver seat module through the power seat circuit breaker. The driver 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 ground 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 driver seat module the switch status is active. Each seat adjuster motor is controlled by the driver 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 driver seat module. The driver seat module operates the seat adjuster motors by switching one of a motor's 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 driver seat module and are used to determine the seat position when storing or recalling memory settings. The horizontal, front vertical, and rear vertical adjuster motors use hall effect type position sensors. The hall effect position sensors are supplied with battery positive reference and ground circuits from the driver seat module. The position sensor signal circuits are supplied battery positive voltage through a resistor them monitored within the driver seat module. During adjuster motor operation the hall effect position sensor provides a single pulse for every revolution of the adjuster motor shaft. The driver seat module counts the pulses from the position sensor signal circuits to determine the adjuster motor positions when storing or recalling memory seat position settings. The recline adjuster motor is equipped with a potentiometer type position sensor. The recline motor position sensor is supplied with it's own 5-volt reference ground circuits from the driver seat module. The recline position sensor signal circuit is referenced from ground within the driver seat module. The signal voltage monitored by the driver seat module ranges from 0.39 - 4.58 volts and is determined by the wiper location on the resistor within the recline motor position sensor. The recline motor position sensor signal circuit voltage level is used by the driver seat module to determine the seat recline position when storing or recalling memory seat position settings.
The memory recall switch assembly on the driver's door provides inputs to the driver door module. Battery voltage is supplied to the memory

Feb 06, 2018 | Chevrolet Suburban Cars & Trucks

1 Answer

2002 Ford Excursion drivers control module


It could be , but to replace it without testing would not be a wise idea . These modules can set DTC'S - diagnostic trouble code's .Having a qualified repair shop check it would be your best bet .
It's called driver seat module .
DSM Diagnostic Trouble Code (DTC) Index
DSM Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1342 ECU Is Faulted DSM INSTALL a new DSM. REFER to Section 419-10 . B1530 Memory Set Switch Circuit Short to Ground DSM Go To Pinpoint Test J . B1534 Memory 1 Switch Circuit Short to Ground DSM Go To Pinpoint Test J . B1538 Memory 2 Switch Circuit Short to Ground DSM Go To Pinpoint Test J . B1663 Seat Driver Front Up/Down Motor Stalled DSM If the motor does not operate, Go To Pinpoint Test H (Navigator) or Go To Pinpoint Test I (Expedition). If motor operates, Go To Pinpoint Test J . B1664 Seat Driver Rear Up/Down Motor Stalled DSM If the motor does not operate, Go To Pinpoint Test H (Navigator) or Go To Pinpoint Test I (Expedition). If motor operates, Go To Pinpoint Test J . B1665 Seat Driver Forward/Backward Motor Stalled DSM If the motor does not operate, Go To Pinpoint Test H (Navigator) or Go To Pinpoint Test I (Expedition). If motor operates, Go To Pinpoint Test J . B1666 Seat Recline Forward/Rearward Motor Stalled DSM If the motor does not operate, Go To Pinpoint Test H (Navigator). If motor operates, Go To Pinpoint Test J . B1667 Mirror Driver Up/Down Motor Stalled DSM REFER to Section 501-09 . B1668 Mirror Driver Right/Left Motor Stalled DSM REFER to Section 501-09 . B1669 Mirror Passenger Up/Down Motor Stalled DSM REFER to Section 501-09 . B1670 Mirror Passenger Right/Left Motor Stalled DSM REFER to Section 501-09 . B1676 Battery Voltage Out of Range DSM REFER to Section 414-00 . B1703 Seat Driver Recline Forward Switch Circuit Short to Battery DSM Go To Pinpoint Test H (Navigator). B1707 Seat Driver Recline Rearward Switch Circuit Short to Battery DSM Go To Pinpoint Test H (Navigator). B1711 Seat Driver Front Up Switch Circuit Short to Battery DSM Go To Pinpoint Test H (Navigator) or Go To Pinpoint Test I (Expedition). B1715 Seat Driver Front Down Switch Circuit Short to Battery DSM Go To Pinpoint Test H (Navigator) or Go To Pinpoint Test I (Expedition). B1719 Seat Driver Forward Switch Circuit Short to Battery DSM Go To Pinpoint Test H (Navigator) or Go To Pinpoint Test I (Expedition). B1723 Seat Driver Rearward Switch Circuit Short to Battery DSM Go To Pinpoint Test H (Navigator) or Go To Pinpoint Test I (Expedition). B1727 Seat Driver Rear Up Switch Circuit Short to Battery DSM Go To Pinpoint Test H (Navigator) or Go To Pinpoint Test I (Expedition). B1731 Seat Driver Rear Down Switch Circuit Short to Battery DSM Go To Pinpoint Test H (Navigator) or Go To Pinpoint Test I (Expedition). B1735 Mirror Driver Vertical Switch Circuit Short to Battery DSM REFER to Section 501-09 . B1739 Mirror Driver Horizontal Switch Circuit Short to Battery DSM REFER to Section 501-09 . B1743 Mirror Passenger Vertical Switch Circuit Short to Battery DSM REFER to Section 501-09 . B1747 Mirror Passenger Horizontal Switch Circuit Short to Battery DSM REFER to Section 501-09 . B1950 Seat Rear Up/Down Feedback Potentiometer Circuit Failure DSM Go To Pinpoint Test J . B1952 Seat Rear Up/Down Feedback Potentiometer Circuit Short to Battery DSM Go To Pinpoint Test J . B1954 Seat Front Up/Down Feedback Potentiometer Circuit Failure DSM Go To Pinpoint Test J . B1956 Seat Front Up/Down Feedback Potentiometer Circuit Short to Battery DSM Go To Pinpoint Test J . B1958 Seat Recline Fwd/Backward Feedback Potentiometer Circuit Failure DSM Go To Pinpoint Test J . B1961 Seat Recline Fwd/Backward Feedback Potentiometer Circuit Short to Ground DSM Go To Pinpoint Test J . B1962 Seat Horizontal Forward/Rearward Feedback Potentiometer Circuit Failure DSM Go To Pinpoint Test J . B1964 Seat Horizontal Forward/Rearward Feedback Potentiometer Circuit Short to Battery DSM Go To Pinpoint Test J . B1987 Pedal Forward / Rearward Motor Stalled DSM REFER to Section 206-00 . B1988 Pedal Position Forward Switch Circuit Short to Battery DSM REFER to Section 206-00 . B1989 Pedal Position Rearward Switch Circuit Short to Battery DSM REFER to Section 206-00 . B1990 Pedal Forward/Rearward Feedback Potentiometer Circuit Failure DSM REFER to Section 206-00 . B1991 Pedal Forward/Rearward Feedback Potentiometer Circuit Short to Battery DSM REFER to Section 206-00 . B2312 Mirror Passenger Horizontal Feedback Potentiometer Circuit Failure DSM REFER to Section 501-09 . B2314 Mirror Passenger Horizontal Feedback Potentiometer Short to Battery DSM REFER to Section 501-09 . B2316 Mirror Passenger Vertical Feedback Potentiometer Circuit Failure DSM REFER to Section 501-09 . B2318 Mirror Passenger Vertical Feedback Potentiometer Short to Battery DSM REFER to Section 501-09 . B2320 Mirror Driver Horizontal Feedback Potentiometer Circuit Failure DSM REFER to Section 501-09 . B2322 Mirror Driver Horizontal Feedback Potentiometer Short to Battery DSM REFER to Section 501-09 . B2324 Mirror Driver Vertical Feedback Potentiometer Circuit Failure DSM REFER to Section 501-09 . B2326 Mirror Driver Vertical Feedback Potentiometer Short to Battery DSM REFER to Section 501-09 . B2477 Module Configuration Failure DSM INSTALL a new DSM.

Nov 30, 2017 | 2003 Ford Excursion

1 Answer

Power front seats


Before you start beating up thing's , test the electrical circuits. Do you know anything about automotive electrical systems ? How to use a volt meter an a wiring diagram to test for B+ power to the switch an testing the ground .
Does your envoy have memory seats ? Your vehicle has four or more electric motors to control back an foward , up an down etc.. the odds of more then one motor being bad at one time are highly unlikely .
Look under the seat any trash under there keeping it from moving ?
If you have memory seats there is a control module involved in making the seats work . If it has memory seats it could have DTC'S - diagnostic trouble codes .
DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815, or B1820
The seat adjuster switches are inputs to the driver and passenger seat modules. The seat modules supply the adjuster switch assemblies with a battery positive switch supply circuit and monitor the switch signal circuits. In an inactive state the switch signal circuits are floating and when a switch is pressed the signal circuit is closed to the switch power circuit within the adjuster switch assembly. When battery voltage is present on the switch signal circuit the seat module determines the switch status to be active.
DIY Blazer GMC Jimmy Power Seat Control Diagnostics and Repair Electric...

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