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

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A/C refrigerant system, troubleshooting<br />

Página 3 de 10<br />

87-133<br />

A/C refrigerant system pressures,<br />

checking<br />

Check A/C refrigerant system pressures using<br />

these three tests:<br />

1 - Air temperature drop from center instrument<br />

panel outlet (A/C system cooling performance)<br />

2 - A/C system high pressure<br />

3 - A/C system low pressure<br />

The combined results of all three steps<br />

determine which part of the A/C system is<br />

causing the problem, see table Page 87-137 .<br />

Test conditions<br />

A/C refrigerant system fully charged; discharge,<br />

evacuate and recharge system if necessary<br />

Condenser and radiator clean and free of<br />

obstructions (spray clean if necessary)<br />

Air distribution can be adjusted correctly using<br />

control knobs (all air distribution flaps reach end<br />

positions)<br />

Wiring OK per wiring diagram<br />

Outside (ambient) air temperature between 20-<br />

30 C (68-86 F)<br />

Drive belts for A/C compressor and Generator<br />

in good condition and properly tensioned<br />

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

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

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