Need diagnostic help for rear spoiler

[cgmillard]

Hello from a new member!

I've searched this board for a similar issue and can't seem to find one, so here goes:

I recently bought a plain-Jane 97 Boxster in pretty good condition, but the spoiler does not extend or retract automatically or manually. The warning indicator light does come on at the appropriate speed. Based on other posts, I replaced the relays and checked the fuse, still no action.

Got the VOM out and checked the operation of the manual switch, and it appears to be functioning properly. Went back to the wiring connector to the spoiler motor itself, and I can get it to raise and lower by applying 12 v to it, so the motor functions.

Any suggestions as to further diagnostic steps (Bentley is of no help)? Are there switches or sensors that detect the position of the spoiler that might be maladjusted?

Thanks in advance for any help.

Cliff