[SOLVED] 2001 Side Impact Sensor location (SRS light on)

[cbburtraw]

Airbag light on - code reads as left front side impact sensor, signal faulty. Live data shows the same. Resetting of light using advance scan tool does nothing, meaning the fault is probably real, or could be a bad SRS module.

Where is the sensor? How do I change it? I guessed under the seat but couldn't find it.
I'd like to clean the contacts, perhaps swap the unit with the other side to confirm the fault follows it.
I find several posts online of people successfully doing so, but don't describe exactly where the sensor itself is or how to remove it.

Also, where is the SRS module and how to I change that?
Just in case it comes to that. I'm guessing it's under the center console?

[cbburtraw]

Found it. Inside the B pillar, pretty easy to get to.
-Remove bottom trim for each door (front is silver and says "Volvo" remove two screws and pry, back is plain black just pries off).
-Remove bottom B pillar trim (black on mine, just kinda pries off from both sides).
-Peel back gray sound insulation.
-Impact sensor is down low, brown, and attached by two nuts, with a two wire harness attaching to it. PN 30613043.

Swapped drivers and passenger side one (same PN) and the fault followed, confirmed bad sensor. I wouldn't have thought these things to go bad TBH, guess I was wrong. Thankful for this iCarsoft scan tool that can get live data from the SRS/ ABS-DSA-TCS/ several other modules. It has already paid for itself with this finicky car lol.

I hear back sensors are a similar procedure, requires removing part of the back seat cushion, removing C pillar trim, and it's a black sensor I believe PN 30613044 (one PN digit difference). I didn't do this though, won't unless I have to. Probably a bit more difficult with the back seat in the way.

It's too bad instruction on this is so scarce on the web... hope this helps the next owner with this problem .