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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 7 de 10<br />

87-137<br />

Test 1<br />

Temperature<br />

from center air<br />

vent 1)<br />

Test 2<br />

High<br />

pressure 2)<br />

Test 3<br />

Low<br />

pressure 2)<br />

Possible<br />

causes of<br />

incorrect<br />

readings<br />

Corrective<br />

measures<br />

Normal Normal Normal None ---<br />

Too high Normal Normal Temperature flap<br />

position<br />

incorrect<br />

Adjust temperature<br />

flap cable<br />

Too high Too low Normal Compressor Replace<br />

compressor<br />

Normal Too low Normal Compressor Replace<br />

compressor<br />

Normal Normal Too high or<br />

too low<br />

Too high Normal Too high or<br />

too low<br />

Expansion valve<br />

or compressor<br />

Clean/replace<br />

expansion valve or<br />

replace compressor<br />

Normal<br />

Too high or<br />

too low<br />

Too high or<br />

too low<br />

1) Normal air outlet temperature approx. 6 C (43 F). For higher ambient temperatures<br />

and/or higher humidity, specified air temperature from center instrument panel vent can<br />

be slightly higher.<br />

2)<br />

For normal system temperatures and pressures Page 87-120 .<br />

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

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

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