viper 5704v can’t start with key

Hello all!

I recently installed a Viper 5704v to my 2000 Mitsubishi Montero Sport. Well to be honest I switched it out from one that my local shop had installed because it was failing on me. They had installed a Crimestopper SP-500.
I went ahead and changed out all the connections, antenna, brain, siren everything. Used really good connectors so everything would be secure.
So here is my problem the car will start perfectly with the remote start. However, when I try to crank it with the key, it will not start. The starter will not turn at all. It will only start with the remote start
Now I've noticed that when I turn the key to the "On" position I hear a relay switch in the brain of the 5704. Now, when I remove the constant 12v wire from the brain, I am able to use the key and the starter will turn and the car starts up.
Does anyone have any suggestions?? I would greatly appreciate it!

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2014 Toyota Corolla

Did you hook up the starter kill ? Green should go to the key side , violet should go to the starter side

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If i Can't Install it    I Don't need it   Joe

Yes. Like I said. Everything looks fine. It's only after the 12 constant is hooked up is that I hear the relay inside of the brain activate which in return does not let me turn the car on.
I measured continuity between the green cable and violet cable when the 12 constant is plugged in and I get nothing. Once I disconnect it I hear the relay inside the box turn off and then I check check for continuity and I do have continuity.

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2014 Toyota Corolla

Sounds like either the brain is faulty with the relay reversed or the relay has a constant signal activating it.....make sure u double check all the wires....is ur ground when armed wire connected incorrectly? Maybe ur not disarming the alarm? Definitely something to do with the ground out when armed wire which is causing the relay to cut off the starter wire.

ground when armed is grounded properly. I've noticed that if I have disconnected that cable, whenever I try to lock the car it the siren sounds different.
Now i do have a question, I read somewhere that I need to have all the cables that have a fuse connected. That i MUST have them all connected to a 12v constant in order for the remote start to work properly. Is this true?
Those cables are:

H3/2   RED / WHITE   FUSED (30A) IGNITION 2
H3/6   RED  FUSED (30A) IGNITION 1
H3/9   RED / BLACK   FUSED (30A) ACCESSORY/STARTER INPUT

is this true? because if it is I have them connected to a 12v constant. Maybe one of these are causing the problem?

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2014 Toyota Corolla

Ground when armed shouldn't be grounded. It provides a ground out when the system is armed.
I don't have the install guide for that system but I believe All 3 of those should see constant 12v. Can you list out your connections for us please.

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If i Can't Install it    I Don't need it   Joe

oh so Ground when armed shouldn't go to a ground point in the car?

Here are the remote start
Remote Start,
(H3) 10-pin connector
H3/1    PINK (+) IGNITION 1 INPUT/OUTPUT
H3/2    RED / WHITE      (87) FLEX RELAY +12V INPUT (30A FUSED)
H3/3    ORANGE  (+) ACCESSORY OUTPUT
H3/4    VIOLET (+) STARTER OUTPUT (CAR SIDE OF THE STARTER KILL)
H3/5    GREEN  (+) STARTER INPUT (KEY SIDE OF THE STARTER KILL)
H3/6    RED   IGNITION 1 +12V INPUT (30A FUSED)
H3/7    PINK/WHITE     (30) FLEX RELAY OUTPUT (car side of ign, acc or starter wire)
H3/8    PINK/BLACK     (87a) FLEX RELAY INPUT (key side of ign, acc or starter wire if needed)
H3/9    RED / BLACK      ACCESSORY/STARTER RELAY +12V INPUT (30A FUSED)

Cables i did not connect are: H3/7 and H3/8

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2014 Toyota Corolla

Yes remove the ground when armed from the ground point. You are correct on the 3 power wires

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If i Can't Install it    I Don't need it   Joe

thanks, ive yet to try it. will try tommorrow. is there a special place this cable goes?? or just bundled it with the rest of the unused cables?

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2014 Toyota Corolla

Just bundle it with the rest it's only use is for window closure and switching on extra LEDs or armed displays when the alarm is armed.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

chev104275 wrote:

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Yes remove the ground when armed from the ground point. You are correct on the 3 power wires

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well good news, that was the problem! however, now i have some other bad news.
after i start it with the key it turns off after a second or so. cant figure out what it is. anyone care to chime on this?

Now another question, my bypass type is a transponder. where the key goes in the little box and has a cable wrapped around the ignition. As of right now i have the power in the 12v constant all the time. The reason for this is because I cant find a spot to put it where it will turn on when the car is in the remote start sequence. Any ideas where I can plug this 12v source to?? I have tried placing the power on the Starter Output but it doesn't work. Is there a cable the brain has that will output 12V when the remote start sequence activates?

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2014 Toyota Corolla

First the by-pass.
Standard key in the box by-pass system has 3 wires.
12V+ constant usually red.
Ground, usually black.
Trigger wire from remote start GWR aka status wire usually blue.

Second failure to stay running.
Re-check your wiring, ignition switch outputs AND fuses with a DMM.
I'm guessing you either made a wiring error or you've damaged the ignition switch.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

howie ll wrote:

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First the by-pass.
Standard key in the box by-pass system has 3 wires.
12V+ constant usually red.
Ground, usually black.
Trigger wire from remote start GWR aka status wire usually blue.

Second failure to stay running.
Re-check your wiring, ignition switch outputs AND fuses with a DMM.
I'm guessing you either made a wiring error or you've damaged the ignition switch.

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Ok, so I finally got to trying to fix it and here is what I figured out.
My by-pass system has 3 wires.
12V+ which is red, that is wired up to Ignition switch.
Yellow, which is not plugged up ti anything.
Black for ground. So no blue wire.

Now I figured out that if I unplug the RED / yellow/black wire going into the bypass I can start the car perfectly with the key. Tried it multiple times and always worked. However, now remote start would not work. Tries to start but since it does not sense the key from the bypass it wont start.

If I plug the cable back in, and start with the key it turns on for 2 seconds then shuts off. Tried multiple times and same scenario. Now if i tried with remote start, it works perfectly multiple times.

So it looks like my bypass is affecting the starting of the car with the key when it detects two keys(the one from my bypass and the one in the ignition)? But then im kinda confused because wouldnt both keys have the same chip in them???


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2014 Toyota Corolla

Not all keys have the same chip. They are usually all different and the car learns the code of the key through a programming sequence. Do this for the bypass. Since Ive never seen a bypass of this kind with a yellow wire and it woks the way you have it hooked up, disconnect the black wire from ground and connect it to the blue (-) status output from the 5704. That should solve the issue. The bypass would only be active for the remote start sequence not all the time. The car is seeing two codes and is shutting down.

blanx218 wrote:

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Not all keys have the same chip. They are usually all different and the car learns the code of the key through a programming sequence. Do this for the bypass. Since Ive never seen a bypass of this kind with a yellow wire and it woks the way you have it hooked up, disconnect the black wire from ground and connect it to the blue (-) status output from the 5704. That should solve the issue. The bypass would only be active for the remote start sequence not all the time. The car is seeing two codes and is shutting down.

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Ok, so I tried what you did and connect it to the Dark Blue (-) Status Output and the remote start works perfectly. However, when I try to start with the key , once I get to the ignition position, but not starting, the Status Output activates and makes the bypass module active. So it has the same result. I can hear the bypass activating because you can hear the relay switch in it move.
Now I tried connecting the bypass ground cable with the Violet / YELLOW (-) Starter Output. This sorta works, however, the bypass module does not stay on long enough for the ignition key to "sense" they key. It only turns on when the car is starting with the remote start which is like .5 seconds.

So im still scratching my head trying to figure out a way to have the bypass module only activate when the remote start sequence is on, but not activate at all when I have the key in the ignition switch.

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2014 Toyota Corolla

blanx218 wrote:

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The car is seeing two codes and is shutting down.

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More than likely both keys are transmitting simultaneously, creating undecipherable trash (noise) that the car doesn't understand so it shutting down because it isn't communicating with any key.

Hooking up a bypass is supposed to be a common thing, there should be a schematic on the interwebs on how everyone is wiring bypasses into the DEI's. I do recall something about using the status output but perhaps the brain needs to be programmed for the bypass in addition to just being wired to the status output so it properly controls the status wire/bypass.

sorry for the late response.....just to be clear on my post regarding the ground when armed wire....i did not mean to ground that wire....i meant that it mustve been hooked up to a realy or something causing the car to not start with the key.