A/C clutch / compressor relay

[Gonzokew]

hi, a/c on my s3 isn't working.

I've had it fully gassed with an automotive machine that found no leaks.

When I turn econ mode off the fan comes on, but clutch doesn't kick in.

The climate control codes says the clutch is getting 14v but at the plug it gets 6v then every 4 seconds gets a blip of 12v. I've traced the cable and continuity seems ok and for it to be every 4 seconds seems strange.

Is there a relay that controls this?

Is it worth linking out the pressure switch too?

S3 BAM for those who are wondering.

Thanks