Quote Originally Posted by rsinger View Post
I'm assuming, among other things, this equipment reads an on board computer which actually monitors the sensors and retains the readings in memory. Think I'm on the right track here. If it's a sensor or wiring issue, couldn't one use a volt ohm meter to take the readings? A little more time consuming and more legwork required (looking up sensor specifications).

A cheap mans troubleshooting tool but it might help the guy out in Spain. I don't suspect anyone there would have this equipment and software. Even if he orders it, could take a while to get there.
a digital multimeter would do the trick, call indmar and speak to a tech there , they are very helpful and will probably send email you a wiring diagram maybe even sensor resistance values if they have them They are very helpful www.indmar.com