Outer Limits 4x4 Board

This M13a conversion is driving me mad!! I have checked all of the sensors, wiring and fault codes over and over and I have narrowed my problems down to one thing......

The engine won't start because I have not got the ICM ( immobilizer Control Module). According to the manual, the ECM and the ICM 'Talk' to each other when ignition key is inserted. This 'Conversation' allows the ignition to power up.

My question is......

Can anyone modify my ECM to ignore these rude bastards, as they obviously won't let me join their conversation. Can the circut be programmed out?

I am in brisbane, so It would be most convenient for me to take it somewhere up here.

I need a relatively fast response here, otherwise I may have to spend $1500 on aftermarket ECU, which I am not real keen on

Bring on the suggestions fellas

Ok without sounding sarcastic the easiest thing would be to get the immobiliser module, plug it in so it sends the signal and not wire up the immobiliser (but heck if you got a immobiliser wire it in right...)

The other option (probably the one you want to hear) is some sort of interceptor. What we need here is someone who owns a jimny (municeto?) to hook up a multimeter and read the signal. At a guess it will probably be a simple 5v pulse that pings (Questions) the immobiliser which replies with it's own 5v pulse (Answer). It may be as simple as wiring the question straight into the Answer or perharps a delay is needed using a set of relays.

Santos wrote:Ok without sounding sarcastic the easiest thing would be to get the immobiliser module, plug it in so it sends the signal and not wire up the immobiliser (but heck if you got a immobiliser wire it in right...)

The other option (probably the one you want to hear) is some sort of interceptor. What we need here is someone who owns a jimny (municeto?) to hook up a multimeter and read the signal. At a guess it will probably be a simple 5v pulse that pings (Questions) the immobiliser which replies with it's own 5v pulse (Answer). It may be as simple as wiring the question straight into the Answer or perharps a delay is needed using a set of relays.

Have you tried finding parts for a 2004 Jimny?? They aren't exactly lying in wrecking yards everywhere....

I am trying to track one down, but I also need the ignition barrel and the key, as they are all coded to each other.

You are correct about the 5V pulse, but without the module I can go no further. If municeto (or anyone else) has an M13a powered jimny with the immobilzer, and is prepared to test the signal I would be very gratefull.

How many wires run from the ECU to the immobiliser? What is the current of the 5v signal which is sent.

Sorry I cant be much more help. But it can be done. I have the M13a in my buggy and it all works. I dont have an immobilser

You are more than welcome to come poke your head under the bonnet and check it out. Might be worth a look before you fork out the cash. I am in Brissy.

Cheers

Shorty40 wrote:Sorry I cant be much more help. But it can be done. I have the M13a in my buggy and it all works. I dont have an immobilser

You are more than welcome to come poke your head under the bonnet and check it out. Might be worth a look before you fork out the cash. I am in Brissy.

Cheers

I may take you up on that offer yet. where abouts are you?

You got da PM

Gutless how did you go with your problem any luck. I have the m13a ,service manual and work auto electronics so maybe able help. Let me know.

rob

Still no luck

I have the manuals too, but unfortunately they go into no detail about the internal workings of the major components. The ECM, TCM (if car fitted with A/T) and ICM have no information about the internals what so ever.

I can understand suzukis' lack of detail in these areas for two reasons; 1. they need to protect their technology, and 2. the ECM, TCM, and ICM are all manufactured by other companies (Denso, Mitsubishi electronics etc etc...) so they have to obey the patents and copyrights of these companies also.

Just makes life hard for everyone else that is not privy to these details

I'm trying to find a ICM and transponder key....this MAY be the quickest and cheapest ( if you can call it that) option.

Pete

Santos wrote:How many wires run from the ECU to the immobiliser? What is the current of the 5v signal which is sent.

Not sure. Its a pretty low current device tho.

It is one wire. Yellow/blue. I believe it would be more than just a 5 volt input. It would be resistor driven. The valves would have to match to start. If I have time in the next few day I will drop the steering box and do some tests for you. What state are you in too.


Rob

No. Its 4 wires. B, Y/B, Bl/B, B/W.

It is a 5V pulsing code that is transmitted between both devices. The manual even states this.

If you get the current that it pulses out you know how much you can prob into it without damaging the ecm. IE if it has 200ma coming out it's safe to send a 5v 150ma-200ma signal into each of the 3 other wires to see if it activates the ignition. I imagine that two wires arm the immobiliser and the other two wires de-activate it.

1000km trouble shooting always has it's nuisances.

Yes four wires. But what do they do. B black earth. b/w black white. ingition, bi/b blue/white is is a link with ecu to main relay. It y/b yellow blue is the one you have to worry about. I have a normal cut key too. Very busy at work too. Will try and solve this for you. Off hand I believe the immobilizer cut out injectors. Have you thought about an aftermarket computer too.

Rob