Plutoe

There have been all sorts of misinformation broadcasted on why, when and under what circumstances does your electric suction fan function!!

No more whining about----Oh my gosh my girlfriend thinks my fan is running to slow or wow do I really need a new fan or Oh gosh my fan dosen't run or is that putz at kiddy benz correct-can I remove my fan blades!!

To help correct that misinformation, I have attached a file describing the detailed function and control of the electric suction fan

AMGAffalterbach

+420

Spoko

Well,
Thanks for the info. it explains the function of the electric suction fan. however the code i got says open circuit. trying to figure it out where the open circuit could occur. Have VIS/ASRA software but I can't find the electrical diagram. do you have more info on this topic, specifically for C320 gas engine. any suggestions appreciated
Daniel

konigstiger

VIN?

P2073 Electric suction fan for engine or air conditioning: Open circuit (P1999)
P2074 Y22/6 (variable intake manifold switchover valve): (P1999)
P2074 Y22/6 (variable intake manifold switchover valve): Short circuit to ground (P1999)

tjts1

M112/m113 manifold has only one vacuum motor.