Hey,

If anyone is swapping their CVT out for a 5MT and was wondering how things would work for the ECU or you don't feel like having to recode your immobiliser etc. have a look here.

Firstly, you need to have a good idea of how to solder things, if you're not confident with soldering, ask a friend who is or practice on an old piece of electrical equipment. Also, use flux, it is your saviour when it comes to electronics.

Basically, if you try to use the CVT ECU on an MT car, you should get a few errors (And a nasty 4000rpm limiter due to limp mode) from the ECU basically saying "Where my CVT at?", however to bypass this you just need to fool the ECU into thinking the components it's looking for are there.

Now, I did this a long time ago so forgive me for not exactly knowing which 3 components they are but this worked for me (Twice) and it should work perfectly fine for you.

You'll need resistors between 3.8 Ohm and 6.8 Ohm and that's what specified in this link CVT Drive Pulley Pressure Control Valve Test (CVT)

NB : The two blue ones in series are because I ran out of green ones

Then, solder them to these pins as indicated by my picture below :



This should get your ECU thinking that everything is okay and that should also get rid of the 4000RPM limp mode limiter.

I hope this helps someone, if it's been posted already well, I do apologize but I thought I'd put this here before I forgot and as a reference to myself in future.

 

By the way, this mostly applies to the EUDM/JDM Jazz's with CVT, but the concept is the same for any GD auto as long as you have a wiring diagram and a code reader.

 

How did you figure this out? Do you have a pin diagram you can share? Or just experimenting?

 

I do have a pin-out diagram that I can share which I used to figure all of this out. I also used HondaFitJazz.com to figure out resistance values for the missing control units.

I’ve attached a Diagram as well as an example of the control unit resistance below.

 

Oh wow, well done finding that info.

 

I am getting this problem now...so I am going to try it and reply on it....thanks so much for posting i will update

 

I just burnt the resistor...what did I do wrong?

 

This is not working