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1997 Mercury Sable liftgate locking/unlocking
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oddgca
User
Sep 19, 2012, 12:13 PM
Post #1 of 6
(1903 views)
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1997 Mercury Sable liftgate locking/unlocking
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1997
Mercury
Sable Wagon with remote access
174000 km
Hello,
I have problems to lock and unlock the liftgate by the key or the master switches. Sometimes one or the other works, but most of the time not. The liftgate lock motor seems to be in order. The problem might be with the liftgate release relay or the remote anti-theft personality module (RAP).
However I can't locate either the release relay nor the RAP module. In the schematics available the liftgate relay is numbered as C257 and the RAP as C254. I could find the all door lock and unlock relay named C255 and C250.
My idea is to unplug the liftgate release relay and the RAP module if they are defective and place a jumper at the relay base to modify the the wagon in without RAP.
Can you please give me some advice in the matter.
Otto
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Hammer Time
Ultimate Carjunky
/ Moderator
Sep 19, 2012, 4:46 PM
Post #2 of 6
(1879 views)
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Re: 1997 Mercury Sable liftgate locking/unlocking
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Those numbers identify connectors, not components.
You can't simply "jump out" these circuits. These relays simultaneously reverse polarities. You are going to start a fire if you start jumping things. That liftgate relay that you are looking at is just a "release" relay and doesn't operate any key locks.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Hammer Time
Ultimate Carjunky
/ Moderator
Sep 26, 2012, 3:44 PM
Post #4 of 6
(1829 views)
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Re: 1997 Mercury Sable liftgate locking/unlocking
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How do you expect to do that? You don't even know how they are supposed to operate. How are you going to tell is they are working properly?
You obviously are not listening to what you are being told. The release relay is just that "a release relay". It plays no part in locking of the tailgate.
Liftgate Release Relay In I/P, to the right of the steering column C257
Remote Anti-Theft Personality
Module In I/P, behind integrated control panel C253
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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oddgca
User
Sep 26, 2012, 6:32 PM
Post #5 of 6
(1819 views)
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Re: 1997 Mercury Sable liftgate locking/unlocking
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The Liftgate Lock Motor receives a signal from S300(or is it 306?Icant read it properly) via the normal closed contact 30 - 17a (I cant read the number properly) of the Liftgate Release Relay. On S300 are also connected all the other Door Lock Motors. The other side of all the Motors are connected to S312. S300 and S312 changing polarity if the All Door Lock Relay or the All Door Unlock relay are energized. The locking or unlocking of the Liftgate will not work, if for any reason the Liftgate Release Relay is energized by receiving an N signal from the RAP module C254, pin 7. By removing the Liftgate Release Relay and jumping pin contacts 30 - 17a the locking/unlocking of the Liftgate should function independent of any signal coming from the RAP module.
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