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Bentley Volkswagen.Golf.Jetta.R32.Official.Factory.Repair.Manual.1999-2005

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A/C refrigerant system, servicing<br />

Página 5 de 51<br />

Diagnostic<br />

of Engine<br />

Control<br />

Module<br />

(ECM).<br />

Function:<br />

-F129-<br />

switches<br />

the<br />

coolant<br />

fan -V7-<br />

to next<br />

higher<br />

speed<br />

when<br />

pressure<br />

increases<br />

in<br />

refrigerant<br />

circuit.<br />

-F129-<br />

switches off<br />

A/C clutch<br />

whenever<br />

excessive<br />

refrigerant<br />

system<br />

pressure is<br />

present (e.g.:<br />

insufficient air<br />

flow over<br />

condensor or<br />

if system is<br />

overcharged).<br />

-F129-<br />

switches<br />

off A/C<br />

clutch<br />

whenever<br />

insufficient<br />

refrigerant<br />

system<br />

pressure<br />

is present<br />

(e.g.:<br />

refrigerant<br />

has<br />

leaked<br />

out).<br />

http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Next&type=repair&id=...<br />

13/2/<strong>2005</strong>

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