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Discussion Starter #1
Hello, I've come across an odd problem. The car is a Renault Scenic RX4 ,'01 model. The compressor clutch doesn't engage unless I provide power directly from the battery. When I do, the ac does blow cold air in the cabin as is set. Fuses, both in the cabin box and engine compartment seem to be fine. Any ideas on how I could fix this? Is there a wiring diagram for the AC unit? Thanks!
 

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if fuses fine and a/c works if forced, most likely pressure switch fault either low pressure or a faulty switch
 

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Super fantastic Mod Technical Supremo Nice Guy
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I've changed the switch but the problem is still present. I'd like to check the wiring, Is there a wiring diagram or service manual available?
 

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I've changed the switch but the problem is still present. I'd like to check the wiring, Is there a wiring diagram or service manual available?
Probably, But not on here due to copyright rules.
Haynes?
 

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Super fantastic Mod Technical Supremo Nice Guy
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but if you should post your Oval plate Without the vin visible, will look , and try and see If I have one and try to make you a test plan up.
But only if you post your plate, and If I forget you bump the thread. :wink2:
You just type BUMP after a day, If I have not replied,,,
its my age..:grin2::grin2:

Or so I have been told..:crying2:
 

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Super fantastic Mod Technical Supremo Nice Guy
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Under bonnet fuse box, bottom row, consists of relays and fuses

Second relay in is your aircon relay
Check For a break in the wiring from track 1 on the clutch to the wiring on the


switch you have changed at track D,
 

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Discussion Starter #9 (Edited)
Under bonnet fuse box, bottom row, consists of relays and fuses

Second relay in is your aircon relay
Check For a break in the wiring from track 1 on the clutch to the wiring on the


switch you have changed at track D,
The switch valve I changed, is 5V while the clutch is 12V. Are they connected through the cabin aircon panel?
By second relay, do you mean the white one in the center column?
Also, any ideas why there is a diode missing in D9?Could that be the reason why it's not working?Shouldn't it be there?( http://knigaproavto.ru/shemy/en/renault/scenic/368-19962003-renault-scenic-i-fuse-box-diagram.html)

 
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