To trick the ecu into thinking it is it neutral you will have to add a 7k 1% rated resistor or a 6.8k-ohm resistor to pin 30 on the ecu And the other end of the resistor is to be spliced into pin 46(signal ground).
to trick the ecu into thinking the transmission temp is ok, by adding a 1.2k 1% rated resistor to pin 42 on the ecu and splice the other end of the resistor to pin 46 as well.

This is how to get your standard auto ECU to run properly without having idle problems and the thermo fans running non stop.

and piecesTo begin with we assume that you have already aquired the T5 box with its loom and other bits . Once these have been fitted you will come to plugging in the wiring harness. The standard BTR auto has 2 plugs: one is rectangular in shape which will plug straight in to your manual harness, this sends the signal for the speed sensor, reverse sensor and neutral switch. The second is a round cannon type plug which is for the auto’s only and operates your solenoids, sends the signal for the gear selector and the box oil temp sender. These last 2 items is where the idle probs and fans come in to it. The idea is to trick the ECU in to thinking that the auto is running at the right temperature and in neutral, and for this we need 2 resistors
4band 5band
1 x 1.2k ohm (brown-red-red or brown-red-black-brown)
1 x 7k ohm (violet-black-red or violet-black-black-brown)

If you don’t know how to read resistors then don’t worry because your Jaycar dealer will be able to identify them for you when you buy them. Next you need to gently bend the legs of the resistors so that they look similar to this. I found a small pair of pliers helps a lot!


The legs are bent in a U shape to simulate the prongs that are in the male end of the cannon plug, so it may help to bend them a little twisted to ensure a good contact with the female cannon plug. Next you put them in to the plug like this. The resistors aren’t polarise so it doesn’t matter which way you put them in.


Noting the squared cutouts in the plug pointed out by the aqua arrows, insert the resistors as shown

Green oval-1.2k ohm
Pink oval - 7 ohm

This should then allow the car to operate normally. I finished off the cannon plug by cutting a small piece of rag and stuffing it in to the end of the plug to hold the resistors in tight, then I wrapped it in electrical tape to give it some protection from the elements and also to prevent a short circuit

what you need to do is check the voltage between pin 30 and 46 with the resistor fitted, and it should be either, for park= 3.8-4.2v or neutral= 2.8v-3.2v.. either will work..

and check the voltage between pin 42 and pin 46 with this resistor fitted, for the trans temp the Normal Operating Temp voltage= 1.0-3.6V...

Re the ICS, I have been driving with mine unplugged for almost 12 months. The rev hang with a manual is a PITA even with the correct resistors in place.

The engine braking is much better with the ICS off and the car drives like a manual should, with no interference from the ECU and ICS.

I have now set up a system that has an on/off switch so I can turn the ICS on for cold starts, then turn it off again when the engine is warm enough, usually a couple of minutes, and I have a relay in place to automatically turn the ICS on when the A/C pump kicks in.

Best of both worlds!!!

Cheers
BenJ