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Thread: memory seat module

  1. #1
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    Default memory seat module

    20th anny car here with AOD

    gutted interior in order to remove and clean carpet and discovered something new.
    car has sat since dec 2016 due to a deer hit.

    car inherited a few odd ball symtoms while sitting such as:
    High idle- fixed that = iac was stuck one way or the other,, suspect corrosion started to build up on the slider ball valve.

    NO over drive & shifting points happened only at 2500rpm-fixed that= son must have floored the gas when he hit the deer in an OH CRAP moment and inverted the trans TV linkage where it was jammed in the WOT position.

    driver power seat functions INOP.




    driver seat has no motorized functions at all except heated seats relay does engage.

    took cover off memory seat module and inside it i manually CLOSED the indivdual ice cube relays and all seat functions/motors work with memory module installed to specs.

    I could not get any activity out of the door mounted memory seat set switches.

    found no wiring problems on any of the connectors under the seat.
    The LED light is not on at the memory seat module.

    CB & power input with console switches manipulated arrive up to the input of the memory module mother board, i get power in at the memory module.
    the console switches are upstream of the memory module. all motors are downstream of the memory module.

    The expected memory module output cooresponding wire does not send DC volts out to the motors.

    I have continuity on the main ground wire. I have not looked in the evtm to locate the actual ground lug point on chassis.


    visual inspection of mother board and using a magnefying glass i can see no visual problems.

    any help appreciated , perhaps i need to check something else?

    I did notice and dont understand why i have a conductor called out in the evtm to go out to the transmission speed sensor!

    memory seat module does not get warm anywhere when i make/close & hold closed for a long period of time one of the console seat control switches.

    as a temp solve, i manually closed various ice cube relays on the memory module by hand to position the seat where its most comfortable. This way i can install the driver seat
    without a memory module.

    I want to ship this off to someone else to verify on thier car it is bad or good,,, and/or locate a memory module someone may have in thier hoard for sale if possible.
    I have the driver seat set now so the wife or I can be seated comfortably.

    oddly i dont think i remember this thing acting up prior to the deer hit.
    Last edited by jcassity; 10-11-2017 at 09:16 AM.

  2. #2
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    Here is a write-up from the '93 Continental shop manual.
    I am guessing the speed sensor input to the control module is to keep you from recalling a different seat position while the car is moving.
    The Continental does this by requiring the trans be in park or neutral.

    It also says the seat sensors can keep it from working.
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  3. #3
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    that last sentence is my exact problem.

    I better try to look for these sensors they speak of on the sseat track before i bolt down the drivers seat.

    thanks!

  4. #4
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    I looked all through my shop manuals last night and found nothing,,,, **NOT A SINGLE DOCUMENT** pretaining to memory seats.

    which shop manual can i find info on this system?

    Also, i was completely unaware of any seat track sensors but i will take your word for it. I am unable to find any seat track sensor info unless i am not looking in the right manual.

    Is there a seat presure switch in these cars?,, seems i recall someone here years ago talking of such a thing.

  5. #5
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    The blurb I posted is from the '93 continental shop manual. I should have done more studying before I posted it.
    Looking at the '87 Tbird/Coug EVTM, I don't see any sensor inputs to the drivers seat memory module.(other that the speed sensor)
    Sorry.

  6. #6
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    Been comparing the 87 and 93 EVTMs. The wire colors and circuit numbers match up between the two.
    87 EVTM page 192. Drivers seat motor assembly at the bottom. The 93 EVTM shows three hall effect sensors as part of that assembly.
    87 EVTM page 195. There are two unlabeled cable connectors on the memory module. I think one of them is for the seat motors. Check wire color codes on page 192.

    The other unlabeled connector?? The 93 EVTM shows the sensor wire codes as: GY/BK R/W R/LG Y/LB

  7. #7
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    Is the starter relay hooked up?
    I think maybe the memory neutral module (page 193) needs to see ground (through the starter relay) on circuit 32 R/LB, when the ignition switch is NOT in START.

  8. #8
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    LOL ,, wow...
    the infamous RED / Light blue wire.
    man do i have a boat load of time converting a CFI 87 V6 to a V8 dealing with that wire and the path it takes around the world to include the transmission harness. it actually changes colors completely.

    Yes the starter relay is connected. I have been driving the car very often since after the paint work.

    87evtm page 194 calls out memory neutral module as being under the drivers seat.

    it implies it is a separate module but there is nothing else but the memory seat module.

    perhaps the memory neutral module is a part of the memory seat module.?

    i am going to speculate that the neutral module just might be a part of the huge ass switch assembly on the actual door itself. hate to do it but i need to take that door panel back off and see if i hurt a wire on the memory seat button assembly. there are a bunch of wires going to it.

    perhaps the evtm is wrong showing the Neutral module as a different item?

  9. #9
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    The 93 EVTM does not have a memory neutral module. The same wires just go to the memory module, except there is no speed sensor wire.
    The reason I suspected the R/LB wire is because the 98 EVTM taps into it between the ignition switch and the neutral safety switch. So the NSS has to be closed for it to "see" the starter relay ground. This is why they say you must be in Park or Neutral before you can "recall" a different seat position.

    From the 93 shop manual: there is a white self test button on top of the module. Push the button and the led should blink 4 to 6 times if all is good.
    If there are no blinks or less than 4 or more than 6 something is bad.

    If bad, there is an "out of vehicle" test procedure to see if it is the module or something external to the module. I'll hold off on posting this procedure until you see if you need it.

  10. #10
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    I think the memory neutral module is the single wire red/LB jumpered connector shown. none of the other wires are in the game per the EVTM.

    another shot showing all connectors plugged in.

    I had one connector that just lost its integrity compeletly so i temp mocked up the connections.
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