Curious, why here?
You have a Renix (Renault/Bendix) ignition system (sworn by and at) often discussed here:
http://www.naxja.org/forum/
You'll get more info over there. Some codes can be read only while running and only with a specific adapter - you'll get just as far with an ohm meter.
Check the forum - send me a pm if you need specific info - I have factory manuals for an 89!