[Diy_efi] Coils from Toyota/Lexus 1MZ-FE engine...

[don.broadus at exeloncorp.com]

Looks like you have the same coils I have.
pins and  ohm meter lead polarity
 3+  4-  346.7 ohms    3-   4+   346.7 ohms
 1+  2-  1.49  meg     1-   2+   infinite 
 1+  4-  19.805 K      1-   4+   19.770 K
 1+  3-  18.61  K      1-   3+   13.30  K

  Good Luck making Sparks. 





-----Original Message-----
From: Gerard [mailto:gerard at poboxes.com]
Sent: Saturday, May 17, 2003 4:47 PM
To: List for general do-it-yourself EFI talk
Subject: Re: [Diy_efi] Coils from Toyota/Lexus 1MZ-FE engine...


Just another quick question.

I'm just messing with a multimeter with these coils and I was wondering,
in order to just make sure the pins are the same as those on the units
you have, if you could give me the resistance measurements between the
pins.

I get something like 346 Ohms between pin 3 and 4, nothing between pin 1
and 2. I get what seems to be 17KOhm to 24KOhm betwen 4 and 1, 3 and 1.
Those are from swapping the test leads around as well. I don't seem to
have anything to pin 2, which is most likely only going to happen when 3
goes high.

don.broadus at exeloncorp.com wrote:
> 
> The coils I have are Toyota  90919-02238 Denso from a 4cyl. DOHC engine
that
> was not in the car so I don't know what it is out of. If your looking at
the
> 4 pin connector  Right to left
> 
>            ------
>                 4321
>            ------
>   1= +12 VDC
>   2= power ground
>   3= signal hi
>   4=signal low
> The connectors  I got have color codes   +12V black/silver dots   power
> ground Black/yellow
> signal hi  is different for each coil (green/red) or (Red/Black)or
> (red/yellow) or Red/white) for 4 cyl. apps. signal low white/black   You
can
> tie power ground and signal ground together. The Smart coil will fire with
a
> pos going +5V pulse. With 15Hz square wave pulse you get great sparks with
a
> .060 gap plug. The smart coils draw 6.5 amps at 11.5 VDC from 15 HZ up to
> 10KHZ.  50 HZ  would be approx 6000 RPM.      Take Care

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