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

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Pressures, checking on vehicles<br />

Página 6 de 33<br />

caused by inadequate bending<br />

radii.<br />

- Check refrigerant pipes and<br />

hoses for external damage.<br />

- If no fault is found, flush<br />

refrigerant circuit with compressed<br />

air and nitrogen.<br />

Pressure in refrigerant circuit in<br />

line with table or higher.<br />

- Start engine.<br />

- Set air conditioning system to<br />

maximum cooling output.<br />

Note:<br />

- If the low pressure switch was<br />

removed to connect the service<br />

station, bridge the electrical<br />

connections in the corresponding<br />

connector for the pressure<br />

measurement.<br />

- A/C compressor is driven by the<br />

engine via A/C Clutch N25 .<br />

- A/C Compressor Regulator Valve<br />

N280 is activated by Climatronic<br />

Control Module J255 .<br />

<strong>Repair</strong> Manual, Heating & Air<br />

Conditioning, <strong>Repair</strong> Group 87 ,<br />

If compressor is not driven with<br />

engine running or regulating<br />

valve is not actuated:<br />

- Establish and eliminate cause<br />

e.g. by checking air conditioner<br />

DTC memory.<br />

- Observe test conditions.<br />

- Check voltage supply for A/C<br />

Clutch N25 , if this is OK, repair<br />

A/C clutch.<br />

- Check activation of A/C<br />

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

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

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