5901 door lock problem
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=118982
Printed Date: May 11, 2025 at 7:07 AM
Topic: 5901 door lock problem
Posted By: mattodre
Subject: 5901 door lock problem
Date Posted: December 31, 2009 at 3:40 PM
hello all, first post on this site, so i will thank you all now for any help. just installed a viper 5901 on a 2005 chevy equinox. everything works great, except door lock/unlock on remote. the 5901 is setup for - and i belive the car is + how do i get this to work? thanks
Replies:
Posted By: t&t tech
Date Posted: December 31, 2009 at 3:58 PM
The output of the 5901 is flip flop, both positive and negative, the green-negative on lock and positive on unlock, the blue- negative on unlock and positive on lock. According to this site's diagram it is positive trigger, so, have you tested the wires to verify them?. It's possible you may need a relay to boost the signal!. Someone else will have to verfiy this! It's also possible that you could need to diodes inline bands facing away from the alarm, again someone who has actually done that vehicle will have to chime in! ------------- COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: mattodre
Date Posted: December 31, 2009 at 4:08 PM
i have tested them and they only show a negative pulse from the remote. if they were flip flop wouldnt they still work, just backwards? the instructions that came with it says it is negative. thanks
Posted By: t&t tech
Date Posted: December 31, 2009 at 4:12 PM
Well you can use relays to flip the polarity! Pin 87 and 86 of both relays fused at five amps pin 85 of each relay- one to the lock trigger from alarm the other 85 of the second relay to unlock pin 30 of both relays to the respective unlock and lock trigger wires of the car! ------------- COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: t&t tech
Date Posted: December 31, 2009 at 4:14 PM
Also i personally have never checked if the polarity was flip flop i just assumed, i will check the next time however, i do apologise, as where i'm from i never use positve trigger! LOL! ------------- COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: tedmond
Date Posted: December 31, 2009 at 4:35 PM
dei does offer the flipped polarity on the unlock/lock wires. ------------- Ted
2nd Year Tier 1 Medical School
Still installing as a hobby...pays for groceries
Compustar Expert
Posted By: t&t tech
Date Posted: December 31, 2009 at 4:41 PM
I know this ted, i just never checked on that unit, he said his directions said negative output, so i didin't argue!
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COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: mattodre
Date Posted: December 31, 2009 at 4:57 PM
tedmond wrote:
dei does offer the flipped polarity on the unlock/lock wires.
thanks ted, but how do you flip the polarity? when testing the two wires one green and one blue, i can only get a neg pulse. on the install directions from there website it says neg. or pos. but on the install sheet that came with it it say only neg. wich is what it shows when i test it.
Posted By: t&t tech
Date Posted: December 31, 2009 at 5:27 PM
You don't flip the polarity! the unit does this automatically! Unless dei made changes that i'm unaware of!
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COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: t&t tech
Date Posted: December 31, 2009 at 5:29 PM
Here's an easy test, take the positive and negative of the meter and attach one probe to the lock and the other to the unlock, when you arm an disarm yiou should get a positive twelve volt reading one way and a negative twelve volt the other! This way you would be able to tell if the unit is properly outputting!
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COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: mattodre
Date Posted: December 31, 2009 at 6:24 PM
t&t tech wrote:
Here's an easy test, take the positive and negative of the meter and attach one probe to the lock and the other to the unlock, when you arm an disarm yiou should get a positive twelve volt reading one way and a negative twelve volt the other! This way you would be able to tell if the unit is properly outputting!
OK i tried that and got nothing. the only time i get a 12 volt reading is when i have one probe on a 12 volt constant, and the other on the output wire of the unit.
Posted By: t&t tech
Date Posted: December 31, 2009 at 6:25 PM
Well something's wrong with that unit!
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COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: mattodre
Date Posted: December 31, 2009 at 6:43 PM
t&t tech wrote:
Well something's wrong with that unit!
thats what i'm starting to think, is there any way you can think of to make it work with only a neg. pulse. bought it on amazon.com and would be a hassle to return. it was new though.
Posted By: t&t tech
Date Posted: December 31, 2009 at 6:59 PM
t&t tech wrote:
Well you can use relays to flip the polarity! Pin 87 and 86 of both relays fused at five amps pin 85 of each relay- one to the lock trigger from alarm the other 85 of the second relay to unlock pin 30 of both relays to the respective unlock and lock trigger wires of the car!
------------- COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: t&t tech
Date Posted: December 31, 2009 at 7:00 PM
Once the negative outputs are pulsing and not constant you can perform the above!
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COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: samh_08
Date Posted: January 07, 2010 at 5:17 PM
They did change their units to only do a negative pulse. This is a fact, nothing is wrong with the unit.
Buy a DEI 451m for your locks
Posted By: howie ll
Date Posted: January 07, 2010 at 6:44 PM
When did this change? The convention was neg output, green lock, blue unlock. Pos output,blue lock, green unlock. I always use diodes to condition them because of the stupid OCD ECUs on European cars.
So up yours the Terrible Twins you know who I mean, and one of you, the southerly one, when are you going to work on something else besides Japanese cars!
Posted By: samh_08
Date Posted: January 07, 2010 at 6:55 PM
They changed at the beginning of the year but I've only seen this on 5501s and 5901s so far. I assume the 5301 and 5101s will follow suite if they havent already.
Posted By: t&t tech
Date Posted: January 07, 2010 at 7:19 PM
Didn't know dei did that, well, he has to use relays! Thanks for the info there samh_8! P.S Howard, if i had my own shop i would love to work on some american and euros, but the owner of the shop i am employed at won't have it! So what am i to do? Until i have my own, it's japanese all the way, you know i love them japanese, right Howie!  ------------- COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: tedmond
Date Posted: January 07, 2010 at 7:59 PM
hey t&t, does your shop use DEI stuff only? btw, the 451m is going to cost you more than buying 2 relays and harnesses. ------------- Ted
2nd Year Tier 1 Medical School
Still installing as a hobby...pays for groceries
Compustar Expert
Posted By: t&t tech
Date Posted: January 08, 2010 at 8:54 AM
DEI and AUDIOVOX TED!
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COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: howie ll
Date Posted: January 08, 2010 at 10:00 AM
You mean he turns away work in these times of recession? Words fail me (for once).
Posted By: t&t tech
Date Posted: January 08, 2010 at 7:29 PM
Yes howard, locally the market never really got that slow, the fact that customers haven't a clue about some of the features their vehicles have been manufactured with also contributes to a well paced market!
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COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
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