E320 2001 stuck in EC mode

[johnqle]

My E320 was stuck in EC mode (light on) and thus could not get AC to work.
I found several related topics on benzworld.com and mercedesshop.com forums explaining how to run the on-board diagnosis via N22 control module and got the following readings:

01: 98 in-car temp
02: 76 outside temp
03: 69 heater-core temp left
04: 69 heater-core temp right
05: 73 evaporator temp sensor
06: 66 ECT sensor
07: 04 refrigerant pressure
08: 67 refrigerant temp sensor

I also got the following Faulty codes:

EB1419 electromagnetic clutch
EB1234 sun sensor (safe to ignore based on read articles)

I then followed the instructions posted by Sokoloff (MB bulletin 37/99-2) and could turn off the EC mode:
http://www.mercedesshop.com/shopforu...ad.php?t=86110

I have not yet replaced the evaporator nor the refrigerant temperature sensor at this point. My AC is still not blowing cold air though.

The faulty electromagnetic clutch code EB1419 does not sound like a simple problem to me. So, before replacing any unnecessary parts, just wonder if any MB tech gurus here can point me to the right direction?

Appreciate much your inputs...
John

[Matt L]

EB1419 is probably the problem. Disconnect the clutch electrical connection at the compressor, and check the resistance to ground. If it's open, that's the problem. While you're down there, make sure that you can turn the compressor shaft. If the compressor locks up, a heat-sensitive fuse blows to cut off the clutch current.