Volkswagen Golf Service & Repair Manual: Test prerequisites

Volkswagen Golf Service & Repair Manual / Air conditioning system with refrigerant R134a / Checking pressures on vehicles / Checking systems with an expansion valve and reservoir (without regulated air conditioner compressor) / Test prerequisites

Radiator and condenser must be clean (clean them if necessary).

The V-belt for air conditioner compressor and alternator is correctly tensioned.

All air ducts, covers and seals are OK and properly installed.

The flaps reach their end positions.

The engine is at operating temperature.

The evaporator and heating do not draw any uncooled air at highest fresh air blower speed.

With the engine running and the air conditioning system set to full power, check the following points:

The fresh air blower is running

The radiator fan is running or is switched on.

The fresh air and air recirculation flap is set to “recirculate”.

The ambient temperature is more than 15^oC.

The temperature switch for evaporator -E33- is correctly fitted and its switching temperatures are correct.

Checking systems with an expansion valve and reservoir (without regulated air conditioner compressor)

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Checking

Switch off ignition. – Connect manifold gauge (air conditioner service station). – Read pressure gauge. ...

Other materials:

Warning lamp
First read and observe the introductory information and safety warnings Lit up Possible cause Solution Fault in the alternator. Proceed to a qualified workshop. The electrical system should be checked. Switch off all elec ...

Tools and materials commercially available
Fin comb Charging hoses 5/8"-18 UNF valve Note Use charging hoses in different colours, 1800 mm ...

Introduction
This chapter contains information on the following subjects: → Ashtray in the drink holder → Cigarette lighter Additional information and warnings: Electrical sockets Accessories, modifications, repairs and renewal of parts WARNING Improper use of t ...