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Alarm ECU on IS200/300

Alarm ECU on IS200/300

jimxms
Posting Freak
2,473
30-12-2017, 12:38 AM
#1
Hi Guys,

Does anyone have a close-up picture of the alarm ECU including its location within the car?

I've been given a schematic on how to hook up a shock/tilt sensor to the factory alarm, but I need a better idea of what I'm actually looking for so I can work out how to tackle the job.

I know the trigger wire needs to be spliced into pin4 on the alarm ecu as this is the bonnet courtesy switch but I also need a constant 12v source from nearby and also a cable that can act as 'ground when armed'.

Help appreciated as always Smile

Jim
jimxms
30-12-2017, 12:38 AM #1

Hi Guys,

Does anyone have a close-up picture of the alarm ECU including its location within the car?

I've been given a schematic on how to hook up a shock/tilt sensor to the factory alarm, but I need a better idea of what I'm actually looking for so I can work out how to tackle the job.

I know the trigger wire needs to be spliced into pin4 on the alarm ecu as this is the bonnet courtesy switch but I also need a constant 12v source from nearby and also a cable that can act as 'ground when armed'.

Help appreciated as always Smile

Jim

DaveEdin
Posting Freak
5,657
30-12-2017, 12:50 AM
#2
Annnnnnnnnnnnnnd ....... Cue Rabster!
DaveEdin
30-12-2017, 12:50 AM #2

Annnnnnnnnnnnnnd ....... Cue Rabster!

jimxms
Posting Freak
2,473
30-12-2017, 01:36 AM
#3
From what I've been told if there isn't a 'ground when armed' circuit in the stock ECU, we could use the ignition and a NC relay connected up to earth to simulate the same kind of thing.

I'm looking on RS components for an NC relay at the moment but they seem to be much less common than NO's.

Maybe something like this? http://uk.rs-online.com/web/search/searc...2508852433
Edited 10-02-2011, 11:15 AM by jimxms.
jimxms
30-12-2017, 01:36 AM #3

From what I've been told if there isn't a 'ground when armed' circuit in the stock ECU, we could use the ignition and a NC relay connected up to earth to simulate the same kind of thing.

I'm looking on RS components for an NC relay at the moment but they seem to be much less common than NO's.

Maybe something like this? http://uk.rs-online.com/web/search/searc...2508852433

Rabster
Posting Freak
10,234
30-12-2017, 05:49 AM
#4
I got loads of relays once you get the bit pop round if you want we can have a butchers at fitting it...
Rabster
30-12-2017, 05:49 AM #4

I got loads of relays once you get the bit pop round if you want we can have a butchers at fitting it...

jimxms
Posting Freak
2,473
30-12-2017, 05:51 AM
#5
Cheers man, really appreciate that. If we can document the install I think it might be quite a popular mod considering how many people would want to protect their IS's from getting jacked up / towed.
jimxms
30-12-2017, 05:51 AM #5

Cheers man, really appreciate that. If we can document the install I think it might be quite a popular mod considering how many people would want to protect their IS's from getting jacked up / towed.

Sparkystav
Administrator
14,683
30-12-2017, 09:47 AM
#6
With that thing you bought, cant you just tap into the wire to the door switch?

so if the car tilts the circuit opens, the alarm thinks a doors open and voila alarm goes off?

OutlawJapClub Admin Team
Sparkystav
30-12-2017, 09:47 AM #6

With that thing you bought, cant you just tap into the wire to the door switch?

so if the car tilts the circuit opens, the alarm thinks a doors open and voila alarm goes off?


OutlawJapClub Admin Team

jimxms
Posting Freak
2,473
30-12-2017, 10:30 AM
#7
Yeah you prolly can. I dont think it matters too much what triggers the alarm to go off, its just finding a decent place to hook it up.

From what I can tell it will need to be setup in such a way that its only powered when the ignition is off. In the instructions it mentions that it calibrates its self when powered on, so it cant be on when the car is moving.
jimxms
30-12-2017, 10:30 AM #7

Yeah you prolly can. I dont think it matters too much what triggers the alarm to go off, its just finding a decent place to hook it up.

From what I can tell it will need to be setup in such a way that its only powered when the ignition is off. In the instructions it mentions that it calibrates its self when powered on, so it cant be on when the car is moving.

toxo
Posting Freak
4,843
30-12-2017, 01:06 PM
#8
Surely for that you just need a 5 pin relay on ig+ and don't connect anything to pin 53?
toxo
30-12-2017, 01:06 PM #8

Surely for that you just need a 5 pin relay on ig+ and don't connect anything to pin 53?

Sparkystav
Administrator
14,683
30-12-2017, 01:34 PM
#9
jimxms Yeah you prolly can. I dont think it matters too much what triggers the alarm to go off, its just finding a decent place to hook it up.

From what I can tell it will need to be setup in such a way that its only powered when the ignition is off. In the instructions it mentions that it calibrates its self when powered on, so it cant be on when the car is moving.

The instructions youve been given on My.is look spot on

OutlawJapClub Admin Team
Sparkystav
30-12-2017, 01:34 PM #9

jimxms Yeah you prolly can. I dont think it matters too much what triggers the alarm to go off, its just finding a decent place to hook it up.

From what I can tell it will need to be setup in such a way that its only powered when the ignition is off. In the instructions it mentions that it calibrates its self when powered on, so it cant be on when the car is moving.

The instructions youve been given on My.is look spot on


OutlawJapClub Admin Team

jimxms
Posting Freak
2,473
31-12-2017, 12:08 AM
#10
Aye. Just need to apply that to real-life wires now. Not really sure where I should be looking for stuff Confused

With the help of Rabs though hopefully we can put together a guide with pics (for people like me) :p
jimxms
31-12-2017, 12:08 AM #10

Aye. Just need to apply that to real-life wires now. Not really sure where I should be looking for stuff Confused

With the help of Rabs though hopefully we can put together a guide with pics (for people like me) :p

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