shuld i bay the sealring allso or i will get it directly with the sensor?
thanx allot for all the digrams that u have send thay was vary helpfull.
one last think whay the fan is stell working? its no mor connection to the temperature sensor (B12)?
allso when i disconnect the outside temperature sensor the fan is off!!
thanx allot for the feedback.
The seal ring you may ask at the air-con shop, they may have the same size for you. I think it is rubber O-ring. But if they don't have, you could buy the seal ring from your dealer and also the dryer cartridge if you need to replace too.
If disconnect outside temp sensor, it report minus...Celcies. That's mean the cabin need to be warm. Then the compressor will cut off and the fan is shut down that commanded from climate system.
For sensor B12, I think the sensor logic coud be NC ( normal contact ) when freon pressure low and the fan is shut off.
Other logic, sensor break contact ( contact open ) when freon pressure is high as compressor engage, the fan turn on.
And when the connector disconnected or the wire break, it is the same condition of sensor contact open and the fan turn on. This is my understand.
Other thing in the same sensor is the temperature value that might have effect to fan control too.
I know that some car will switch to safe mode when some sensor malfunction. The air-con still operate and the fan can turn on by command from climate system.