Need a little help with MAP Sensor (barometer sensor) Identification.

my 98 S70 T5 has a Pierburg brand map sensor installed I'ts part number is
7 219880 02 97t281 I'm getting low voltage input codes. I have just pulled the sensor for the second time , scratched up the connectors and squirted them with Boeshield. I have no idea where the other end of the harness is, but suspect that it probably goes directly to the computer. So I'm kinda stuck as far as trying to clean the other end of the harness.

About the same time I have started getting intermittent "Massive evap leak" codes too. Some of the time it seems as if I could twist the cap a few clicks and the problem goes away. I have a code reader and have checked pending codes to not find it pending but then later have it pop back up.

So what other things should I check in the evap circuit and can any one point me to the other end of the MAP sensor lead?

I would try to get a voltage reading at the sensor end if I knew which wire is which (one is green and orange stripe the other is blue and tan. I assume I would read both of these to ground, one at a time, to determine input voltage and voltage drop through the sensor.

OR am I just spinning my wheels and should just bite the bullet and buy a new sensor? $100-$200!

Or just go ahead and take it to the garage and let them wrestle with it?

As usual TIA for your insights!

Woody

Cleaning out my trusty 740T with 200,000 miles getting ready to sell it!