1985-1998 [Subscribe to Daily Digest] |
 | [Main 9000 Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Switch repair Posted by Ari [Email]  (#2847) [Profile/Gallery]
(more from Ari) on Thu, 20 Dec 2001 09:49:10
In Reply to: Electric Seats - not hot, John T, Thu, 20 Dec 2001 08:36:09 Members do not see ads below this line. - Help Keep This Site Online - Signup |
The seat controllers aren't pots (potentiometers). The knob is a four position rotary switch. There is a temperature sensor in the seat. The controller compares the temperature of the seat sensor, and if it's colder than the setting on the rotary switch, it closes a relay, supplying 12 volts to the seat heater. Once the seat temperature is hotter than the sensor, the relay opens. The 0 setting is off, and each of the other settings (1,2,3) correspond to higher seat temperatures.
Inside the controller is a little circuit board with an amplifier chip, some resistors and capacitors, and a relay. You can open the case. Check out Quasi's site, specifically, http://quasimotors.gar.net/seat_heater_bulbs.htm
That will get the case open. Yes, he has a different system than mine, but it works, so I don't knock it.
Once the case is open, clean the switch contacts. If the switch works at 3, it'll work at 1 and 2 if the contacts are cleaned. It's worked for me in the past.
If it still won't work and you don't feel like delving into the electronics, hit a junkyard. All the seat controllers from the 9000 and 900 are the same, so you don't need to find one ffrom the exact same year or model.
Good luck!
posted by 140.157....
, Thu, 20 Dec 2001 09:49:10 <-- Viewing This Message, Thu, 20 Dec 2001 16:11:18
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
 |
 |
 |
 |
 |
