Question bout ECU Wiring

[hitz]

Dear all, can anyone help me on the ECU wiring? I'm trying to locate the A/F input and output, oxygen sensor and also the A/F (-) wiring on the ECU for 20V Silvertop. I got the ECU connection diagram but can't seem to understand it much. I'm trying to install the Pivot ACS-X into my car. Thank in advance..

 

[hitz]

Dear all sifu's, is my wiring correct? Hope anyone can give some guideline.. .. :(

Is this the A/F signal input - Plug 'M' Pin 2 PCB Code (VS) Variable Signal from AFM Flap Position?
Or this wan - Plug 'M' Pin 10 (VTA) Throttle Angle Signal?
Then the Ox sensor is - Plug 'M' Pin 6 (OX) Ox Sensor.
Then the A/F (-) is - Plug 'M' Pin 9 (E2) Sensor Common Ground.

 

[hitz]

Hmmmmm.... No one can help me ar? I just need to know the Wiring Pin for the A/F input only wor. The rest I'm able to locate oredi.. .. :(

 

[scomatic]

:sleep: :sleep: :sleep:
If saw this question... I memang serrender.... :saint:

 

[hitz]

Hmmmm.... Izzit so difficult to install?

 

[cuscostrutbrace]

The SVT O2 sensor have 4 wires,one is connected to swicthed +12V,another 3 is to ecu

Terminal HT = Heater control
Terminal OX = O2 sensor output from O2 sensor to ecu
Terminal E1 = Sensor ground

Terminal VF = Diagnostic output from ecu to diagnostic socket.

Check the continuity first before confirm

 

[hitz]

The SVT O2 sensor have 4 wires,one is connected to swicthed +12V,another 3 is to ecu

Terminal HT = Heater control
Terminal OX = O2 sensor output from O2 sensor to ecu
Terminal E1 = Sensor ground

Terminal VF = Diagnostic output from ecu to diagnostic socket.

Check the continuity first before confirm

Bro, yes i've connected it to the OX wire. It Socket M Pin 6. It should be correct. But seem can't find the A/F input wire at the ECU. Your place there can install this device? Thank Bro for ur reply.

 

[levin818]

Can u post your Pivot ACS-X's wiring?
That will make things clearer.

 

[cuscostrutbrace]

The Load signal terminal is PIM i think,dont quite remember,check with multimeter to make sure,VTA is throttle angle.I think the ACS should be like SAFC 5 button,so wire to be connected should be ignition,ground,load signal and rpm

 

[hitz]

Ok, there got 5 wire color, Blue, Red, Orange, White and Black. But I dun have the manual for it. So I asked PIVOT for the wire colour code. Red is for 12Volt (+), Blue to common sensor ground, Orange is O2 sensor, Black is A/F input ECU and White is A/F Output (Harness). That all he info they can provide. It can only control A/F Lean and Rich only. So no need RPM sensor.

 

[hitz]

The Load signal terminal is PIM i think,dont quite remember,check with multimeter to make sure,VTA is throttle angle.I think the ACS should be like SAFC 5 button,so wire to be connected should be ignition,ground,load signal and rpm

Thank bro for the info. Will check it out later tonight.

 

[hitz]

Here is the photo of the product.

http://i7.photobucket.com/albums/y278/trd_ae92/DSC01415.jpg

 

[cuscostrutbrace]

Oh like that,i thougt like AFC,coz i've seen it in web before,it controls fuel...ok so the thing must intercept O2 signal but i dont quite understand why theres and O2 signal and A/f signal.Both term should refer to the same thing since O2 sensor is measuring A/f.If it is the same,connect both A/f output and O2 together,and A/f input goes to ecu.

Or it can be like this,the A/f wire input and output intercept the load signal,and the O2 wire goes to ACS-X to moniter the changes you have done.This is only what i think,i'm not responsible if anything happen,use at your own risk,hehe

 

[hitz]

Oh like that,i thougt like AFC,coz i've seen it in web before,it controls fuel...ok so the thing must intercept O2 signal but i dont quite understand why theres and O2 signal and A/f signal.Both term should refer to the same thing since O2 sensor is measuring A/f.If it is the same,connect both A/f output and O2 together,and A/f input goes to ecu.

Or it can be like this,the A/f wire input and output intercept the load signal,and the O2 wire goes to ACS-X to moniter the changes you have done.This is only what i think,i'm not responsible if anything happen,use at your own risk,hehe

Bro again thank for your advice. Actually I'm not quite understand wat u mean wor. From my newbies understanding is like tis, A/F wire need to be cut. Then connect the INPUT (ECU) and OUTPUT (HARNESS) Joint it to the Black and White Wire of the ACS-X. Connect the Orange wire to O2 sensor and Blue wire to Common Ground (E2) i think. That what I think lar... Hope to get more info from all the sifu here..

 

[hitz]

Oh like that,i thougt like AFC,coz i've seen it in web before,it controls fuel...ok so the thing must intercept O2 signal but i dont quite understand why theres and O2 signal and A/f signal.Both term should refer to the same thing since O2 sensor is measuring A/f.If it is the same,connect both A/f output and O2 together,and A/f input goes to ecu.

Or it can be like this,the A/f wire input and output intercept the load signal,and the O2 wire goes to ACS-X to moniter the changes you have done.This is only what i think,i'm not responsible if anything happen,use at your own risk,hehe

Bro again thank for your advice. Actually I'm not quite understand wat u mean wor. From my newbies understanding is like tis, A/F wire need to be cut. Then connect the INPUT (ECU) and OUTPUT (HARNESS) Joint it to the Black and White Wire of the ACS-X. Connect the Orange wire to O2 sensor and Blue wire to Common Ground (E2) i think. That what I think lar... Hope to get more info from all the sifu here.. But the if i refer to the newest Pivot ACS-R, the wire colour different wor.

 

[hitz]

The Load signal terminal is PIM i think,dont quite remember,check with multimeter to make sure,VTA is throttle angle.I think the ACS should be like SAFC 5 button,so wire to be connected should be ignition,ground,load signal and rpm

Bro the Load Signal terminal PIM is using what code? Seem can't find it in the ECU Manual. VTA I can find lar. So izzit VTA is the Load Signal for the A/F?

 

[cuscostrutbrace]

The silvertop pin is diffrent from BT and other 16v 4ag which use MAp sensor,on svt i if i'm not mistaken the VS pin is the load signal from AFM.Backprobing with your multimeter between the VS pin and pin E2,switch ignition key on,do not start,you should get around 4v more or less.IF it is,then start the car and the voltage should drop to 2.9-3.1v,rev the car and the voltage will drop more,then is confirm the load signal.

I dont really understand what the ACS-x do since i have never came across that thing but if it is like 1st gen AFC that means it is used to adjust the fuel,hence u need to cut the load wires from afm and goes into the ACS and the output load wire from ACS to ecu.

The O2 signal wire might just be an air fuel ratio meter to monitor the changes you have made..

Hope that works

 

[hitz]

Bro, it should funtion same wit AFC 1st Gen. Really thanx for the info bro. Really appriciated it. Will try to check it out tonite. Thank bro.. ..

 

[hitz]

Sifu cuscostrutbrace, I've connect the ACS-X to VS Pin (INPUT - Harness) (OUTPUT - ECU), connected the O2 and E2 wire already. Start the car and the Pivot is working. It indicate rich in the indicator, but when I press on the acc. pedal the indicator drop to lean. Izzit normal ar the indicator drop whn i press acc.? Thn I try to adjust the Fuel to lean -3, rpm also seem to be dropping. If I +3 car engine died. Since I'm newbies in the, so izzit normal ar? Soli for asking too much question.. .. Izzit normal the indicator drop to lean whenever acc?

 

[cuscostrutbrace]

It depends,if your car is in idle it should indicating lean when you rev since theres no load,try drive the car,it should be a bit rich when accelerate,and going stoich when the rev stabilize and little bit on the lean side when crusing