VEMS on AE86

[irishtwincam]

Need the pin out information on the above coilpacks so they can be wired to the VEMS on this AE86 rallycar.






Cheers to bob for the following information:

I did a google on BAE 04 coil and found the Weber Alpha instructions
http://www.webcon.co.uk/newitems/ACM-4.0a-S.pdf

If you look at Page 57 it shows something claming to be a BAE 04 coil
which looks very like the coil your brother has

http://www.webcon.co.uk/newitems/ACM-4.0a-S.pdf
It lists:
Standard 4-way minitimer connector.
Pin 1 - Coil negative plugs 1 & 4.
Pin 2 - Coil negative plugs 2 & 3.
Pin 3 - Coil positive.
Pin 4 - Common.



Can anyone tell me if PIN 4 is for the Tacho/RPM?

[rob@vems.co.uk]

its possable that its for the tacho, but I'd be wanting a couple of isolating diodes and a zener to take the spikes out.

[irishtwincam]

Um.... can you make that and send the wire in the post with a directional arroy on it pointing toward tacho.

[rob@vems.co.uk]

Is it not on the plug side of the loom?
If not I can hurl one your direction.

Rob

[irishtwincam]

I cant rightly remember if theres a single RPM wire for the gauge on the loom?
Would it just be a wire coming from somewhere both negatives are heatshrinked together or something?

[rob@vems.co.uk]

I cant rightly remember if theres a single RPM wire for the gauge on the loom?
Would it just be a wire coming from somewhere both negatives are heatshrinked together or something?

There should be.  I've started connecting them to the Econoseal connectors.  If not let me know

Rob

[BenR]

I've not dealt with this particular coil, but sagems i have, so the info might cross over.

IF that coil has letter pin identification then :
A : supply (internal connection)
B : supply
C : cylinders 2 and 3 control
D : cylinders 1 and 4 control

On our uses with them we only use B/C/D, tacho supplied from ecu.

[rob@vems.co.uk]

The only way to know for sure is to measure the resistances:
pin1->pin2 = ________Ohms
Pin1->pin3 = ________Ohms
pin1->pin4 = ________Ohms
pin2->pin3 = ________Ohms
pin2->pin4 = ________Ohms
pin3->pin4 = ________Ohms

Then we can draw a the schematic out

[BenR]

Ignition coil SAGEM
Monobloc coil with four outputs
Primary resistance≈ 0.5 Ω
Secondary resistance: 11 ± 1 KΩ
Tightening to 0.9 ± 0.1 daN.m
A : supply (internal connection)
B : supply
C : cylinders 2 and 3 control
D : cylinders 1 and 4 control

[irishtwincam]

Ignition coil SAGEM
Monobloc coil with four outputs
Primary resistance≈ 0.5 Ω
Secondary resistance: 11 ± 1 KΩ
Tightening to 0.9 ± 0.1 daN.m
A : supply (internal connection)
B : supply
C : cylinders 2 and 3 control
D : cylinders 1 and 4 control

After messing with the circuit tester, pin 1-2 was twice the value of 1-3 and 2-3, ergo 1and2 are coilpack negatives.
Dan confimed the document Bob linked to is exactly the coilpack he has.

were wiring the coilpack as follows
Standard 4-way minitimer connector.
Pin 1/D - Coil negative plugs 1 & 4.
Pin 2/C - Coil negative plugs 2 & 3.
Pin 3/B - Coil positive.
Pin 4/A - Common.

Thanks to Bob and BenR for uber informative and correct info