EDIS-6 module output

This forum is for discussing ignition setup, tuning, and troubleshooting for MS-II. Click these links for info on GM's HEI, EDIS, direct coil control, others.
Forum rules
Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.

If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.

If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days

The full forum rules are here: Forum Rules, be sure to read them all regularly.
Post Reply
pj
MegaSquirt Newbie
Posts: 4
Joined: Tue Aug 14, 2007 5:22 pm

EDIS-6 module output

Post by pj »

I have a megasquirt-II upgrade and I'm installing a junkyard EDIS VR and module using a 36-1, 8" trigger wheel from DIY. I'm trying to set the timing for "limp home mode and I'm not getting a hot enough spark to trigger two different timing lights. I pulled #1 wire off its plug and put an old plug in it and grounded the plug to the chassis. I get a cyclic spark, but not very blue in color, more yellow. I unplugged the coil pack and attached a DMM to the red wire(+12vdc) and the other to the lead for one of the coils, in the plug comming from the EDIS module, and the voltage starts at approx. 12.5vdc and drops to a steady approx. 8.5vdc when cranking begins. I measured the resistance of the coils, from the terminal the red(+12vdc) lead connects to, to each of the other three terminals and read the same 1.2ohms for all three coils. I thing the EDIS-6 module isn't providing enough current for the coil pack, because the resistance seems reasonable to me. I can't find any info on how to test a module or coil pack, does anyone know to check these or if these values are good or where I can find the specs. Thanks, pj
Heribert
Helpful Squirter
Posts: 98
Joined: Sat Oct 02, 2004 12:29 am
Location: Sweden

Re: EDIS-6 module output

Post by Heribert »

First , check the polarity of the VR sensor. Seems to be a common problem.
Just swap the VR wires and retry the spark.
If spark improves , great. If not swap back to original polarity.

Second problem can be that the EDIS module really needs resistor plugs and/or wires in the HT circuit
to work well. And clean plugs.
Make sure that each sparkplug + plug lead is more than 5 kOhms.

Try to get a good spark by and watch the spark directly on the plugs in air .

EDIS and timing lights also a bit tricky- Many inductive clamp timing lights only work on one
of the plugs in a pair, regardless how the sensor is clamped on.

Then find out which lead in a pair the timing light fires on .

Good luck

Heribert
If it is not understood , it will not work!
Post Reply