Scan Gauge D in 2003 Alpine

[wolfe10]

Tomorrow will be installing the Scan Gauge D on our 2003 Alpine. Located the 6 pin under the dash.

My only question is: what is the on/off switch adjacent to the coach's 6 pin plug?

Does it have to be on for the Scan Gauge to read?

If so, any problems with leaving the switch on full time (running down chassis battery, keeping engine computer "hot", etc)?

If a problem, will just relocate the switch to an easy to access area.

Thanks.

Brett
2003 Alpine 38'

[Jim A]

Brett,

I was told that the switches (labeled "Engine Diagnostic Switch" and "ABS Diagnostic Switch" on my coach) have nothing to do with the data port, at least in the case of the Silverleaf data stream. They are used for some other testing. I get all the data that I am supposed to get with the switches in their normal off position. I assume the Scan Gauge D would be the same.

The power pins on my diagnostic port are always hot, even with the chassis power switch turned off. As the Silverleaf JIB has LED lights that would eventually run down the battery, I used a source that is only hot when the ignition is on to power the JIB. Not sure if the Scan Gauge D would have the same situation.

[bamaboy473]

First, we envy you your Alpine 38; great coach that's on our short list.

Secondly, I doubt that our ScanGageD could run batteries down in 10 years if the ignition is OFF. If you don't get an answer to your question, just leave it ON until you put the rig away for the winter.

[wolfe10]

Thanks, Jim. Exactly what I needed to know.


Rick, I was less concerned with running the battery down than about inadvertently keeping, say the engine computer powered up 24/7.

Brett

[shorty50]

You can go to settings in the scan gauge and tell it to turn it self off if it has no engine RPM for a minute, it just shuts it self off until you restart engine

[wolfe10]

Good tip. Thanks Ron.

Brett