How to take seat off - Pride Jazzy 1103 Ultra Standard Power Chair

Question edited for clarity.
Question moved from Spanish Car company 'Seat', pronounced See-At.

Check Fuse 13 (Heated Seats)

https://fuse-box.info/chevrolet/chevrolet-uplander-2005-2008-fuses-and-relay

..

Heated Seat System Operation
The driver and passenger heated seats have 2 heat zone operating modes with 3 heat level modes and will operate only while the engine is running. The heat zones are determined by which of the 2 heated seat buttons are pressed, while the heat level is determined by the number of times they are pressed. Pressing the seat cushion button 1 time will activate the seat back and cushion heater elements in the high mode. Each time the seat cushion button is pressed the seat back and cushion heat level is reduced from high to medium, low, and off. Pressing the heated seat back button 1 time will activate only the seat back heater element in the high mode. Each time the seat back button is pressed the seat back heat level is reduced from high to medium, low, and off. During heated seat operation the heat zone operating mode may be changed without affecting the current heat level mode.
The heated seat switches are momentary contact switches and are inputs to the driver and passenger door modules. Battery voltage is supplied to the switch assembly from the door module, and when a heated seat switch is pressed and released a brief switch signal voltage is supplied to the door module. Whenever the door module receives an active heated seat switch input, the next heated seat operating mode is determined by whatever the current mode may be. The seat heater elements are controlled by the driver seat module using inputs from the door modules through Class 2 serial data circuit messages. The driver seat module controls the voltage supply and the ground circuits to the seat heater elements. When a heated seat function is commanded active, the seat module will switch battery voltage to the heater element supply circuits, and ground is provided through low side drive control circuits. During heated seat operation both the seat back and cushion heater elements are supplied battery voltage. The seat module grounds the appropriate control circuits for back only or back and cushion heating modes, and opens or closes the active control circuits as necessary in order to maintain the desired seat temperature. The seat module relies on inputs from thermistors located in the driver and passenger seat backs to control heated seat temperatures. The thermistors are 2 wire sensors supplied with a 5-volt referenced signal circuit and a low reference circuit from the seat module. Resistance through the thermistors varies with temperature causing the heated seat sensor signal circuit voltage levels to decrease as the seat back temperatures rise. The seat modules allow heated seat operation only while the engine is running which is determined by a Class 2 serial data circuit message from the powertrain control module.

Heated Seat Components
The heated seat system consists of the following components:
• Driver and passenger heated seat switches
• Driver and passenger seat back heater elements
• Driver and passenger seat cushion heater elements
• Driver and passenger seat back temperature sensors
• Driver seat module
• Driver door module
• Passenger door module

Do you know what B - body DTC -diagnostic trouble code are ?
DTC B2425 Driver Seat Heater Circuit
DTC B2435 Driver Seat Back Heater Sensor Circuit
DTC B3941 Front Seat Heaters Circuit

Heated Seat Always On
Step
Action
Yes
No
Schematic Reference: Driver Seat Schematics and Passenger Seat Schematics
Connector End View Reference: Power Seat Connector End Views
1
Did you perform the Diagnostic System Check - Vehicle?
Go to Step 2
Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2
Operate the heated seat system.
Does the system operate normally?
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
Go to Step 3
3
Install a scan tool.
Display the Heated Seat Status parameter in the driver seat module Input/Output data list.
Start the engine.
Does the scan tool display the Heated Seat Status parameter as Off?
Go to Step 6
Go to Step 4
4
Display the Heated Seat Mode parameter in the door module Inputs data list.
Does the scan tool display the Heated Seat Mode parameter as OFF?
Go to Step 6
Go to Step 5
5
Turn OFF the ignition.
Disconnect the heated seat switch connector to the door module.
Start the engine.
Does the scan tool display the Heated Seat Mode parameter as OFF?
Go to Step 7
Go to Step 8
6
Replace the driver seat module. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Is the repair complete?
Go to Step 9
--
7
Replace the heated seat switch. Refer to Front Seat Heater Switch Replacement .
Is the repair complete?
Go to Step 9
--
8
Replace the door module. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Is the repair complete?
Go to Step 9
--
9
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 3


your best bet , have a qualified repair shop diagnose the problem

Looking at a wiring diagram for the passenger seat an checking wiring colors mite help you figure it out . But then again maybe not . Electronic's involved here , Right door module .
Heated Seat Components
The heated seats consist of the following components:
• Left heated seat switch
• Right heated seat switch
• Memory seat module
• Left door module
• Right door module
• Left seat cushion heating element
• Left seat back heating element
• Left seat cushion temperature sensor
• Right seat cushion heating element
• Right seat back heating element
• Right seat cushion temperature sensor
Modes of Operation
The heated seat module (MSM) controls heated seat operation for both the driver and passenger seats. There are 2 modes of operation available for heated seats; both the seat cushion and seat back heat, or seat back only heat. When a heated seat temperature signal request is received, the MSM will activate both the seat cushion and seat back heating elements. When the heated seat BACK ONLY mode button is pressed once the MSM will deactivate the seat cushion heating element and leave the seat back heating element ON.

Heated Seat Switch/LED Indicators and System Operation
The left and right heated seats are controlled by separate heated seat switches located in the door panels. Ground is supplied to the heated seat switches through the switch low reference circuits from their respective door modules. The door modules also control the heated seat switch heat mode and temperature indicators. The memory seat module (MSM) controls the heated seat operation for both, the left and right heated seats.
The following describes the sequence of operation and how the MSM responds to each of the switch inputs.
• High Temperature--When the heated seat switch is pressed once, ground is applied through the switch contacts and the switch signal circuit to the door module indicating the high heat request. In response to this signal, the door module applies a low current voltage through the 3 temperature indicator control circuits illuminating all 3 LEDs indicating the high temperature mode. The module then sends a message via the GMLAN serial data line to the MSM indicating the heated seat request. The MSM then applies battery voltage through the heating element supply voltage circuit to the seat cushion and seat back heating elements. At the same time, it supplies a ground through the element low reference circuits to the seat heating elements.
• Medium Temperature--When the switch is pressed a second time, the MSM sets the temperature level to medium heat. The door module removes the voltage from the high temperature indicator leaving 2 LEDs illuminated indicating the medium temperature mode.
• Low Temperature--When the switch is pressed a third time, the MSM sets the temperature level to low heat. The door module removes the voltage from the medium temperature indicator leaving 1 LED illuminated indicating the low temperature mode.
• System OFF State--When the switch is pressed a fourth time, the MSM removes the battery voltage and grounds from the heating elements. The door module removes the voltage from the low temperature indicator, indicating the system OFF state.
• Back Only Mode-When the heated seat is ON and the BACK ONLY mode button is pressed, ground is applied through the switch contacts and the heated seat back only mode signal circuit to the door module. In response to this signal, the door module sends a GMLAN message to the MSM indicating the back only mode request. The MSM then opens the ground path to the seat cushion heater element, leaving the seat back heater active. The door module turns OFF the seat cushion/back mode indicator, then applies a low current voltage through the heated seat back only mode indicator control circuit illuminating the back only mode indicator.

Know how to test an what test is the key to finding the problem .Not guessing . The connector you found may or may not have anything to do with it . What color are the wires ? I have factory service repair manual . Does it have memory seats ?
The Memory Seat System consists of the following components:
• Memory seat module (MSM)
• Seat horizontal motor
• Seat front vertical motor
• Seat rear vertical motor
• Seat recline motor
• Lumbar horizontal motor
• Seat horizontal position sensor
• Seat front vertical position sensor
• Seat rear vertical position sensor
• Seat recline position sensor
• Lumbar horizontal positional sensor
• Seat adjuster switch
• Seat lumbar switch
• Memory seat switch
• PWR SEATS Circuit Breaker 30 A
• MEMORY RPA Fuse 7.5 A

Electronic's ! drivers Power seat module , driver door module . Do you know anything about automotive electronic's ?

The heated seat module (MSM) controls heated seat operation for both the driver and passenger seats. There are 2 modes of operation available for heated seats; both the seat cushion and seat back heat, or seat back only heat. When a heated seat temperature signal request is received, the MSM will activate both the seat cushion and seat back heating elements. When the heated seat BACK ONLY mode button is pressed once the MSM will deactivate the seat cushion heating element and leave the seat back heating element ON.
The adjustable pedal system is controlled by the memory seat module (MSM).
your best bet , have a qualified repair shop check it out ! Could have DTC'S - diagnostic trouble codes in door module , BCM etc...

Auto Repair: How to Replace a Power Seat Motor - YouTube

? 1:44
https://www.youtube.com/watch?v=EDh-0rs5Fjo
Oct 26, 2010 - Uploaded by automdvideos
Auto Repair: How to Replace a Power Seat Motor ... 2007 - 2008 Ford Expedition/Lincoln Navigator Driver Bottom Install Video ...2003-2006 Chevy/GMC Seat Cover Install 1 of 3 - eBay Ready ...2000 Ford Explorer Front Seat Track Stuck Motor Repair - Duration: 4:39. by cubmancan 4,959 views. 4:39.
Drivers seat is dead! No power seat or heat. - TheDieselGarage.comwww.thedieselgarage.com/.../96465-drivers-seat-dead-no-power-seat-hea...Mar 22, 2010 - 2003-2005 Chevrolet Avalanche, Silverado, Suburban, Tahoe 2003-2005.... Power seat on driver side didn't work.....passenger did! Neither ...DANG electric seat ' Chevy Truck Forum ' GM Truck Clubwww.gmtruckclub.com/forum/threads/dang-electric-seat.2990/Apr 27, 2006 - 10 posts - ‎7 authors'03 Tahoe My driver seat just stopped, of corse not where I need it, the ... I have a 2003Tahoe and both heated seats are not working. ... with my seat heater on the drivers seat in my 03 Avalanche, it turns ... The driver's side on my Silverado gets way warmer than the passenger side. ... Frozen New Member.Power Seat Problems?? - Tahoe Forum - Che

To install slide the retention nut over the tapered end of a cable tie strap so
that the larger O.D. of the nut rests on cable tie strap eyelet, then from the bottom of the rear fender feed the cable tie strap up through the fender hole, with the tab on the retention nut seated in the notch in the fender hole pull up on the cable tie strap to locate the nut snug up against the underside of the rear fender and then from the side opposite the tab i.e. from the rear of the fender slide the retention washer onto the nut which will lock it in place.

The FXST/FXSTB seat attaches with a single thumbscrew on the seat bracket. When installing a seat insert the tang at the front of the seat into the channel in the frame and install the single rear thumbscrew which Harley- Davidson has a special tool for which I have never even seen, pn HD-47190.

The FXSTC seat attaches with two fasteners through the sissy bar. When installing the seat the tang at the front of the seat is inserted into the channel in the frame and the two rear fasteners go through the and get tightened to 60-80 in-lbs (6.8-9.0Nm).

The FXCW/FXCWC Solo Seat is attached with 2 locating pins that for removal must be removed from their grommets by lifting the rear of the seat, then the seat is pulled to the rear to disengage the tongue from the frame. To install the seat put it on the frame, slide the seat forward until the tongue locks into the bracket, push the seat forward to align the two locating pins with their grommets and then push the seat down to engage the locating pins.
The FXCWC rider Seat is removed by tipping the seat up and towards the fuel tank, the two fasteners are removed and the seat is then taken off the bike. Do the reverse to install the seat and tighten the fasteners to 90-110 in-lbs (10.2-12.4 Nm).
The FXCWC Passenger Seat Support is removed by tipping the rider seat up and towards thefuel tank removing the two screws and washers from one pillion support, removing the pillion support and the rear seat pillion, then removing the remaining pillion support. To install it install one pillion support but do not tighten its fasteners, install the wave washer and bushing on each pillion support, install the pillion and the second pillion support and tighten all of the fasteners to an initial torque of 30-35 ft-lbs (40.7-47.5 Nm), then loosen the fasteners and then final tighten them to 38-42 ft-lbs(51.5-56.9 Nm), check the rider seat operation and then lower the rider seat into position and engage the locating pins into their
grommets.

To remove the FLSTN/FLSTF/FLST/FLSTC seat remove the passenger seat and seat mounting fasteners. When installing the seat insert the tang at the front of the seat into the channel in the frame and install the seat mounting nuts, then install the passenger seat.

To remove the FLSTSB seat remove the screw from the seat hinge at the front of the seat, raise the rear of the seat only slightly during removal or installation because pivoting the rear of the seat up too high can cause the nose of the seat to damage the leather trim panel on the fuel tank., to disengage the springs from the seat spring mounting pins and remove the seat. To install the FLSTB seat align the seat hinge with the mounting bracket on the frame, insert the screw into the seat hinge from the right side of the motorcycle and tighten it to 14-16 ft-lbs (19.0-21.7Nm), align the bushings on the seat springs with the mounting pins and push the rear of the seat down to engage the seat spring mounting pins. The seat position may be adjusted forward or rearward for rider comfort by removing the seat, removing the nut on the seat hinge, removing the bolts from the seat spring support bracket, (the seat hinge and seat spring support bracket must be installed in the same position in either a forward or a rearward configuration for the seat to fit properly on the motorcycle). To position seat forward install the hinge with the front tab in the slot, install the seat spring support bracket with the springs toward the rear of the seat. AND to position the seat rearward install the hinge with the rear tab in the slot and install the seat spring support bracket with the springs toward the front of the seat., THEN install the nut on the seat hinge and tighten it to 20-25 ft-lbs (27.1-33.9 Nm), install the screws for the seat spring support bracket and tighten them to 15-20 ft-lbs (20.3-27.1 Nm) and then install the seat.

The following checks and repairs can help you:
1. In the fuse box within the bonnet - check fuse number 22, if burnt, replace it
2. Check fuse 19 in the fuse box inside the car located under the dashboard on the driverside
3. If these steps don't help, the problem may be with the wiring and connection between the module and the seat cushion - inspect it
4. Check if the signal return on the circuit is adequately functioning - if the module is being informed of an active seat
5. If there is a problem - repair or replace the circuit and/or wiring.

On these case go with the solved problems related to these issue.

Click the link below and follow the procedure:-----
1994 Lexus GS300: Power seat will not go back? http://howtobyme.blogspot.in/2012/05/1994-lexus-gs300-power-seat-will-not-go.html

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1997 Toyota Avalon: Power Seat will not Move back? http://whatisbyme.blogspot.in/2012/05/1997-toyota-avalon-power-seat-will-not.html

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1998 Chevrolet Corvette: Power Seat Control Now Working? http://schematicsdiagram.blogspot.in/2012/04/1998-chevrolet-corvette-power-seat.html

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Power seat will not go Forward http://repairhelpcenter.blogspot.com/2012/10/power-seat-will-not-go-forward.html

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Replacing power adjustable bucket seats to both heated and cooled seats?

http://schematicsdiagram.blogspot.com/2011/12/replacing-power-adjustable-bucket-seats.html

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Volvo Seat Removal with Heated Seats? http://schematicsdiagram.blogspot.in/2012/07/volvo-seat-removal-with-heated-seats.html

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How to Remove Rear seat on Rover 600? http://repairhelpcenter.blogspot.com/2012/01/there-are-3-10mm-bolts-at-back-of-seats.html

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How to remove Seat? http://repairhelpcenter.blogspot.com/2011/11/how-to-remove-seat-on-acura-integra.html

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These will help.
Thanks.

I think you have to remove headrst bfore folding seat back down. You may have to unbolt seat from floor. 4 bolts.
Rear Seat Backrest —Split Bench Removal
NOTE: The 40% rear seat backrest must be removed before the 60% rear seat backrest.
40% rear seat backrest

1. Remove the 40% rear seat backrest.
   1. Remove the nuts and bolts.
   1. Remove the backrest.

60% rear seat backrest

1. Remove the 60% rear seat backrest.
   1. Remove the nut and bolt.
   1. Remove the backrest.

Installation
NOTE: The 60% rear seat backrest must be installed before the 40% rear seat backrest.
60% rear seat backrest

1. NOTE: Do not tighten the nut and bolt at this time.
   Install the 60% rear seat backrest.
   1. Install the rear seat backrest.
   1. Install the nut and bolt.

40% rear seat backrest

1. NOTE: Do not tighten the nuts and bolts at this time.
   Install the 40% rear seat backrest.
   1. Install the rear seat backrest.
   1. Install the nuts and bolts.

60/40% rear seat backrest

1. Tighten the 60/40% rear seat backrest nuts and bolts in the sequence shown.

40% Rear Seat Backrest

1. Tighten the 40% rear seat backrest nuts and bolts in the sequence shown.

the middle seats come out easily. There are 2 handles you have to lift up on each of the bucket seats, they are in the front of the seat down by the seat tracks. After you lift them, tilt the seat upward in the front and rotate them backward. Then lift out of the hooks. Each seat is held down by 4 hoks.

The 3rd row seat is not designed to come out xcept by a technician. It does slide forward all the way up to the front seat. It has a sliding seat track.
First, lift the T handle under the seat cushion on the left front side of the seat. This will allow you to lift the seat bottom up all the way to lcok in the full up position.
Then, lift the lever on the same side of the seat and slide the seat forward. It will stop in 4 places.
Rear -Rear
6 inches forward of that.
another two ft to the second row seating position
full frward against the front seats.

Pleae rate as fixya if this helps.

Seat —Third Row Bench Removal
CAUTION: Removal of the third row bench seat requires more than one technician.

1. Remove the second row seats. For additional information, refer to Seat—Second Row .

1. Remove the floor mats.

1. Lock the seat cushion in the upright position.
   1. Lift the handle to release the cushion.
   1. Lock the seat cushion in the upright position.

1. Move the third row bench seat to the second row position.
   • Lift the seat track release handle.

1. Remove the two bolt covers.

1. Remove the two seat track front bolts.

1. Remove the four seat track rear bolts.
   1. Position the rear seat cushion floor cover aside.
   1. Remove the four seat track rear bolts.

1. Remove the third row bench seat.