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M.
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Reged: 10/09/2010
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Posts: 282
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Loc: Costa del Poole
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Re: Aircon- compressor clutch not being activated
[re: Tim A.]
14/09/2014 12:32
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The diagnostic output tests suggest that the relay that controls the compressor will switch-
[quote]
-Remove the jumper wire after about 4 seconds, and the LED test light will then begin to blink out the 3433 and the radiator fan will step through the 3 speeds of its operation.
Now insert the jumper wire again for about 4 seconds and remove, then the code 3434 will be blinked out, and the A/C compressor relay will click on and off.
Insert the jumper wire again for about 4 seconds and remove, then the code 3443 will be blinked out, and the fuel gauge should show approximately 15 gal, the coolant temperature gauge should show approximately 80C (176F), and the interior lights are switched on.
Insert the jumper wire again for 4 seconds and remove, then the code 3444 will be blinked out, and the warning buzzer in the instrument cluster will sound.
Insert the jumper wire again for 4 seconds and remove, then the fault code 0000 will be displayed (LED will flash on/off at 2.5 second intervals to signify the 0000 code) The fault code memory will now be erased.
[/quote].
Now. It may be that the diagnostics don't all function due to difference between LHD and RHD models.
The radiator electric fan is now functioning, after some wiring repairs. But the radiator fan is only controlled when the AC is on. The diag tests would likely be independent.
However. After some digging, the aircon system pressure is down, anyway. There is no pressure at the schrader valves
85 WR quattro
90 V8 Silver, 91 V8 Black, 93 V8 Lago
93 100e quattro V6. Titan, i think
Edited by Mark Hanman (14/09/2014 12:41)
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Re: Aircon- compressor clutch not being activated
