Date registered: Jul 2008
Vehicle: C200 Kompressor M111 2.0L Avantgarde Year 2002
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Quoted: 1 Post(s)
The fan could be switched on by the engine-radiator temp and the working condition of climate system. It's not too easy to decide.
I think B12 is independently by it's own with some related logic with climate system.
It will still switch the fan on untill freon pressure-temperature drop to the lower level that B12 switch off the fan.
I suspect that the B12 is stick to be on all the time. This may be because of sensor short circuit. You can measure with meter to know it's logic, by pull the plug out and measure the contact pins.
W203 C200K M111 2002
Denso Iridium IK20
Ground wires SARD
Last edited by DangTH; 04-27-2010 at 09:58 AM.