[tanshi]

I'm wiring up a g13bb into a sierra and a couple of questions that some peeps maybe able to help with. We have pretty much had to piece together an entire loom as some one buchered the original, and we cannot figure out two of the pin outs in the ecu/tcu for the auto (jimny 4 speed) If some one could point me in the right direction of, a) the colour of the wire or possibly the b) the plug and pin location for the below it would be much appreciated. I have checked all the wiring diagrams i can find and non of them match up with the ECU /wiring i have.

I need to know.

IAC valve ( there is no pin out i can find for this on the ECU

Overdrive switch for the auto. there is one for the overdrive off light but there is supposed to be another pin out for the switch.

[steak_knife]

Saam's you man!!

He did this with a manual.

[woody1]

I uploaded the service manual in the DOWNLOADS section if thats any help to you.
I think It might have some wiring diagrams in it.

[joeblow]

IAC pin A18 red with white trace 0-4.2v with engine at idle.


OVERDRIVE pin B16 B/Y cut signal for overdrive.


hope this helps.

[tanshi]

that should help alot, much appreciated.

[tanshi]

joeblow wrote:

IAC pin A18 red with white trace 0-4.2v with engine at idle.


OVERDRIVE pin B16 B/Y cut signal for overdrive.


hope this helps.

Ok I was hoping this would help but alas it doesnt match up.

A18 pin on the ecu we have is marked and one of the injectors, this is from the markings on the actual printed circuit board of the ecu.
I have one marked IAD which im not sure where it goes but nothing relating to IAC as far as i can tell.

for the over drive there is however a pin in plug A on the ecu marked ODC. which leads to a Black and yellow in the PLug. could this be Overdrive Cut???

Im not sure if i just have a bizare ECU or something.

[tanshi]

problem solved, turns out i had a crappy manual, thanks to woody all becomes clear.