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  1. #1
    Join Date
    Mar 2009
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    Default Re: PDM - Passenger Door Module - 1998 Jeep XJ









    Not being able to lock, or unlock your doors from the convenience of a push button can be frustrating. If you have an alarm system that automatically locks and unlocks the doors, well it can be down right time consuming as you make you way to each door to manually lock all your doors.

    My 1998 has had the typical issue where the locks wouldn't work. You would hear them clicking but something wouldn't cooperate.

    One day I was trying to lock my doors, and it was doing that typical click click click, then it just stopped! I kept pressing the button and nothing it was just DEAD (or D E D, DEAD! as we say in Texas). The unlock worked just fine. A friend of mine say "it's a relay" which I was a bit relieved since relays are just plug and play. Not these!

    He was right it was a relay, but these relays are special order and INSIDE the passenger's door panel. Read below and see.


    Two relays part # JJM1-12V-H11

    7.50 each


    ** Sometimes I think this goes without saying but... You shouldn't attempt this unless you feel comfortable in what you are trying to do. You could very well cause this part to fail and have to replace it fully. You also could start a fire if you don't do this correctly. A fuse would probably catch it but who knows you might have foil wrapped around all of those! .

    The 4 relays I ordered came in today. (2 Jeeps, 4 relays. Besides it's a min 25 order)

    I took the inside passenger door to expose the PDM. I removed it, popped the switch covers off and took out the circuit board.

    The relays are the black square-ish boxes in the middle side by side.









    Estimating where the back of the relays are I carefully cut a rectangle in the plastic.





    Using a screwdriver I carefully pry up the plastic I just cut.





    Then I remove the cut section all together!



    Heating up the legs of the two relays and using compressed air to blow away the molten solder I can use a small screwdriver to unbend the legs of the relays then gently remove them from the circuit board.



    I put the new relays into position.



    Then I solder them into place.



    Testing!!!!



    SUCCESS!!!!

    Taking the PDM back to the bench I put the plastic door I cut out and then use duct tape to secure it back into place. It is plastic and non-conductive so I really wasn't worried about critical placement. I can't think of any good reason that this needs to be covered back up but this looks a little more professional.



    Now I just took this and put it back in the inside door panel, hooked up the wiring and the manual lock/unlock rods.

    Popped the door panel back into place, and put in the 4 screws that secures it to the metal door.

    That's it! I have both electric lock and unlock again.


  2. #2
    Join Date
    Nov 2010
    Location
    Waterford, Mi
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    Default Re: Electric Lock Control Repair (DDM, PDM)

    awesome thread, but im sold on manual doors now s shorting out everywhere.
    6.5'' Rough Country lift, 35x12.5x15 BFGoodrich M/T's, 15'' Cragars Beadlocks, Rusty's TBS, A.A. SYE, Optima (red top) Battery, CB Radio w/5'' Fire Stick Antenna, Flowmaster Super 44 Dual Custom Exaust, 4 Cheep 2'' Bumper Lights, Custom Front bumper /w Stinger, Yakama Bike Rack, Garmin GPS, Kenwood 6.5'' Indash Radio, 4 6.5'' Kenwood Speakers, 12' Alpine Type R Sub In Custom Jeep Enclosure, Alpine mono Amp, Ect.

  3. #3
    Join Date
    Mar 2009
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    Default Re: Electric Lock Control Repair (DDM, PDM)

    Quote Originally Posted by modestmar00xj View Post
    awesome thread, but im sold on manual doors now s shorting out everywhere.
    lol, sorry to hear that. Do you think it's due to a lot of off road adventures?

  4. #4
    Join Date
    Feb 2012
    Location
    illinois
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    Default Re: Electric Lock Control Repair (DDM, PDM)

    nice project. this post is very helpful. actually i am trying to do the door check up for my jeep. i am doing this jeep cherokee repair by myself.

  5. #5
    Join Date
    Nov 2009
    Location
    Oregon
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    Default Re: Electric Lock Control Repair (DDM, PDM)

    First of all I would like to say thank you for the great info.
    I was wondering if your PDM had any effect on your mirror controls or power windows. I took my jeep to a shop for this issue and they said that I would have to replace the DDM and the PDM at the same time because they work together. So now that the offending part has failed I wanted to check if there was more to the issue or if any of the windows and mirrors were effected prior to your repair.

  6. #6
    Join Date
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    Default Re: Electric Lock Control Repair (DDM, PDM)

    Quote Originally Posted by EEXJ View Post
    First of all I would like to say thank you for the great info.
    I was wondering if your PDM had any effect on your mirror controls or power windows. I took my jeep to a shop for this issue and they said that I would have to replace the DDM and the PDM at the same time because they work together. So now that the offending part has failed I wanted to check if there was more to the issue or if any of the windows and mirrors were effected prior to your repair.
    Well since I didn't have the money to spend on a replacement I was trying to repair this unit. That changed and I stopped the debug/repair process and just bought a replacement from Rock Auto (or maybe it was Team Cherokee). It was about 70. I replaced the passenger side unit only. I haven't had any issues since.

  7. #7
    Join Date
    Oct 2014
    Location
    Yuma, AZ
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    Icon6 Re: Electric Lock Control Repair (DDM, PDM)

    I would push remote to lock and horn would chirp and some times the locks would work. I replace the pass door control now the doors all lock and unlock.

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