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Old 07-02-2014, 11:08 AM   #1 (permalink)
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Need help instaling a Kill Switch

Hello

Can anyone please help me installing a Kill Switch on my Fiat Bravo 1.4 T-jet

I have the engine service manual, just need someone to point me to the correct cables so I can do something like this mod:

http://ecomodder.com/forum/showthrea...sti-26749.html

I like Sedi_Sol idea because seems very simple and clean

The ECU pin-outs is annexed is here for your consideration:

https://drive.google.com/file/d/0BwP...it?usp=sharing


Thanks you and happy driving

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Old 07-02-2014, 11:49 AM   #2 (permalink)
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Since the manual have many useful information about how the ECU uses the sensors I decided to post the complete document:

https://drive.google.com/file/d/0BwP...it?usp=sharing

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Old 07-02-2014, 12:52 PM   #3 (permalink)
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I wired a kill switch into my car using the crank sensors wire that runs into the ECU.
It does throw a *check engine light* on the VW but it will not on all cars (check on a Fiat Bravo forum for the preferred method)

2 wires run from the sensor under the hood to the ecu ,your wiring diagram will give you the color code to find the wires in the loom , expose the loom sheathing just ahead of the ECU itself to search for and splice into and solder in some wire and a on/off switch, mounted somewhere in a inconspicuous yet convenient place to use.
But
You could also wire in a fuel injector kill switch , which would shut the motor down as well.
Or wire into the ignition , which may work the best way to avoid a check engine light.

With the crank sensor kill switch I did to my car it causes a check engine light Plus I need to cycle the ignition one turn back then forward( a issue caused by VW's security ignition system)

If I was to do it again I would use a ignition kills switch in hopes the *VW* would not need its key cycled to start again on the next jump start.

I suggest you check the Fiat Bravo forums for the best method.
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Old 07-02-2014, 03:35 PM   #4 (permalink)
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Different cars react differently to kill switching. My old honda del sol, i kill switched the ignition ground.

However, on the Sti...the ignition ground also merges with other sensors and components, therefore, killing the ignition made my dash board light up like a christmas tree. After some experimentation, i resorted to the crankshaft position sensor kill switch.


You'll just have to experiment! But i'll take a look at your service manual to see if i can find any possible solutions.
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Old 07-02-2014, 06:24 PM   #5 (permalink)
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Thank's for the help guys

I just want to make sure I don't kill my car with a wrong wire combination

I do a lot of EOC using the ignition key, the kill switch will be a nice upgrade
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Old 07-02-2014, 08:12 PM   #6 (permalink)
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it looks like you have a training manual...its kind of vague.

from all i can tell, you may want to put a kill switch on #11 ignition wires or #13 fuel injectors or #6 fuel pump. however, i strongly suggest AGAINST from tapping into any wires that go into the ECU.

Fuel pump #6 will not yield the best results because it still takes 3-5 seconds before it completely shuts off, therefore, it spits unused fuel into the combustion chamber.

However, if you're able to find the SERVICE MANUAL...it would be a lot more helpful in looking for alternatives on where to install your kill switch.
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Last edited by jedi_sol; 07-02-2014 at 08:19 PM..
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Old 07-03-2014, 06:54 PM   #7 (permalink)
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I got this from the service manual, does it help?

https://drive.google.com/file/d/0B6w...it?usp=sharing

Tks
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Old 07-04-2014, 09:05 PM   #8 (permalink)
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didnt see anything helpful in that one either.

Do you have the wiring diagram for the engine bay from the service manual?
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Old 07-05-2014, 09:47 AM   #9 (permalink)
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Yes I do:

https://drive.google.com/file/d/0B6w...it?usp=sharing
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Old 07-05-2014, 03:17 PM   #10 (permalink)
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Can you post up the entire service manual on your google drive? I need to see the descriptions of each of the wiring circuits....similar to the diagrams I put in my thread.

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