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C-Class (W202) 1995-2000: C 200 CDI, C 220 CDI, C 270 CDI, C 180, C 200 K,C 230 K, C 220, C230, C 280

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Old 04-29-2012, 11:44 AM   #1
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Join Date: Nov 2011
Posts: 4
Drives: W202 C180 1993
1993 W202 C180 A/C problems help needed

Dear all
the PO of my car messed up the AC system's wiring pretty bad, summers are starting so i thought I should have a go and got a wiring diagram for the AC system for a 97 W202. That was all I could find :s

My 202 is a 1993 model with 1800cc and 5sp manual transmission. I need the wiring diagram for the Air conditioning system. I don't know what is the system is called exactly but the controls have two *****, two dials and four bottons (REHEAT, EC, REST, VENT).

I'd really appreciate if someone could get me a wiring diagram for my car.. chassis no: WDB2020182F017766

thanks
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syncview is offline   Reply With Quote
Old 05-06-2012, 01:16 AM   #2
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Join Date: Nov 2011
Posts: 4
Drives: W202 C180 1993
So i've got all my wiring corrected up and most of the things are working now.

I found out that the PO has REMOVED the evaporator temperature sensor for a reason that only GOD knows.

Anyways, i've ordered the part (part#210 830 07 72) and I was testing in the time being - fixed a evap sensor out of a corolla the, compressor runs but doesn't trip making things ICY. anyways, I can't seem to make the vents work properly, they work on vacuum and also the heater isn't working (i have replaced the duo valve and installed new coolant pipes). When I turn the dials to the heater, shouldn't it turn the compressor off and start blowing in warm air? or am I getting it wrong?

I have checked the vacuum switchover valve (y11/3) manually, it has four solenoids inside and all are working, when engine is running the vents and flaps actuated by the vacuum are working. but when I connect the valve and the CCU, the vacuum switchover valve doesn't seem to receive any input from the controller? is my CCU bad? :s
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Old 05-31-2012, 07:49 PM   #3
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Join Date: Oct 2011
Posts: 15
Drives: 2001 cl 600
hey bro i have a 1997 c280 and we cant get the center vents to work on my a/c also sometimes the a/c doesnt come on, i turn off the key and try again most times it comes on sometimes it doesnt. any ideas or help is appreciated.
nightmare cl600 is offline   Reply With Quote
Old 05-31-2012, 07:49 PM
 
 
 
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210830, 97, ac, air, c180, c280, car, conditioner, diagram, install, messes, problem, w202, wire, wiring, working



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