Ahoy Eggnog fan,

>So no CPS connection to ground at where the 10mm bolt head screw at the bell housing bracket and through the wire harness? I only recall the pickup coil CPS connector pinout for 1 and 2 t6ransceive signal with the wire harness and ECU. A floating ground, then? Some RF protection in the cable sheath?

I was surprised that there's no grounding of the CPS shield at the bell housing.
My sense is that poor shielding is a problem with some CPS. Hard to confirm
with failures spread out over weeks or months. I wonder about crappy bell housing grounds.. Does anyone ever service them?

Countermeasures for RFI on critical ECU inputs: CPS, AMM, Knock sensor
and Power stage control lines all shielded by Volvo can be snap ferrites
or added aluminum foil over the harnesses. Snap ferrites act as RF chokes.

Leaving the CPS shield un-grounded at the bell housing makes no sense to me.

Did you see the AMM FAQ from JDPorsche? There's another interesting subject.

Did you try some LED headlights yet?

BTW: KlausC is beating the odds, he just had cataract surgery on both eyes and is doing well, gaining weight and making blood platelets on his own.
I told him to fire Hospice, ask Mayo Clinic for a refund, and move to Canada to get better doctors.

Happy New Year, Bill