hyperterminal responce

[MartinM]

Sorry - a multimeter set to buzz on continuity isn't going to work at all.

You really need a LED and a resistor. If you don't have a LED, I suppose you could do without it - just wire the resistor between +12V and the programmable output pin. Measure the voltage between the programmable output pin and earth. If the output is set to 1500 rpm, active high, you should see 12V below 1500 rpm and about 0.5V above 1500 rpm. Use about a 1000 ohm resistor.

The MJLJ circuitry will probably stand a 12V 5W bulb being used instead of the resistor and/or LED, but I can't really recommend it

Are you really sure you've got power and earth to the MJLJ right to the pins and absolutely zero chance of wiring errors on the SAW and PIP lines???

You really, really need a 'scope, You could send me the MJLJ, or drop it in if you ever come near Bristol, to verify that it hasn't blown up - is it still accepting config changes OK?

[russell_west]

Finaly got hold of an LED and resietor and found the programable outputs can be programed to switch at various RPM settings.

So I am now clutching at some straws. The acc reading on the runtime display jumps all over the place, does this mean anything ?(I am only using a MAP sensor no TPS) The screened cable I am using is audio phono cable is this OK?

[MartinM]

On the whole that's good news - shows that there's probably no problem with the PIP wiring.

http://picasso.org/mjlj/?q=node/666 might be interesting - make sure your shields ARE NOT earthed.

Otherwise it's starting to point at a SAW wiring error or a faulty EDIS module.

Keep going - it's definitely worth it in the end!