Converting to manual using Auto ECU

[ManwithSupra]

Hi all, i am converting to manaul myself but using the Stock Auto ECU (which can be done) but i just need to know how to fool the ECU (i understand you have to bridge some connections on the connector plugs etc) so it does not throw any error codes?? can anyone help me.

 

Thanks.

Edited August 21, 2008 by ManwithSupra (see edit history)

[ManwithSupra]

Anyone ??

[Batmax]

Hi

 

Do you read these :

"(Optional) 6spd ecu, your supra will run fine on the auto ecu, but I do recommend the 6spd ecu, it will control your engine better, ignition timing and other engine functions will be tunned to your 6spd transmission. The auto ecu is known to pull timing at shift points."

http://mkiv.com/techarticles/auto_to_6spd_swap/inside/index.html

 

I have one 6spd ecu if you want

[ManwithSupra]

Thanks for the reply and the link… i have seen that “how to” before and it’s very informative

However i really want to keep the Auto ECU in place so just need to know what i need to do in order to fool the Auto ECU that’s all....as i cant find this detail anywhere but i know on many occasions it has been done.

 

I know something has to be done with the lever position sensor connecter (bridging wires 8 to 0?? To fool the ECU to think it’s in N Or something).

 

I would imagine something needs to be done with the Auto transmission fluid temp sensor as this will throw a error if the wrong resistance is measured for too long (15 mins i think) - I think this is a case of putting a resistor of the right resistance between the connections to simulate a normal temp sensor voltage.

 

Can anyone help on the above and indeed anything else that may need doing ... please help

Edited August 21, 2008 by ManwithSupra (see edit history)

[Batmax]

"I know something has to be done with the lever position sensor connecter (bridging wires 8 to 0?? To fool the ECU to think it’s in N Or something)."

 

Just solder 5 & 6 together on the P2 connector!

 

About these yes you have to put togheter the wires these pic will help you:

[ManwithSupra]

Thanks for this does anything else need to be done??

[ManwithSupra]

Does nothing need to be done with the Fluid Temp Sensor?

[Batmax]

Does nothing need to be done with the Fluid Temp Sensor?

 

Of what ?

[ManwithSupra]

There is a autobox fluid temp sensor (ATF Temp Connector) that is attached to the gearbox, its plug number A5 (and the plug is Grey).

 

According to the A340E Auto Gearbox manual, this sensor is resistance based (lowers a voltage rather than produces a pulse voltage like a speed sensor), and having the wrong reading for a period of time (it says 15 mins) will cause a fault code... well according to the manual anyway.

 

I was not sure if anything needs to be done with regards to stop this error code...

[absz]

All i done with mine was bridge the two main black wires on the gearbox connector plug (grey plug) to fool ecu for the neutral/park position, had no error codes after the conversion.