A/C pressure switch
Racer
Joined: Jun 2006
Posts: 408
Likes: 0
From: Elkton MD
Power to LPS A/C switch
My '95 with C60 manual temp control always had power to that LPS switch. Lots of searching and measuring led to taking the 'head' out of the dash. The Service Manual shows a rotary switch inside the head that controls cooling/heating function but to my surprise, the 'head' actually has transistor logic for control. The transistor that feeds that LPS was shorted (and looked like a peeled banana). 79 cents at Radio Shack and I was back in business.
You may have an open circuit transistor, therefore never voltage to LPS.
There are many other possibilities, like a malfunctioned high pressure circuit to investigate.
One caveat; the manual temperature control cable connection on the C60 is also different from what's shown in the service manual. I broke mine getting it loose so be very careful. As I recall (faintly) the disconnect direction is up not to the side.
Good luck and hope this windy reply helps.
You may have an open circuit transistor, therefore never voltage to LPS.
There are many other possibilities, like a malfunctioned high pressure circuit to investigate.
One caveat; the manual temperature control cable connection on the C60 is also different from what's shown in the service manual. I broke mine getting it loose so be very careful. As I recall (faintly) the disconnect direction is up not to the side.
Good luck and hope this windy reply helps.
