Volkswagen Polo Service & Repair Manual: Test Requirements

Volkswagen Polo Service & Repair Manual / Refrrigerant R134a Servicing / Pressures, Checking / Checking with Expansion Valve and Receiver/Dryer, without Regulated A/C Compressor / Test Requirements

Radiator and condenser are clean (clean if necessary).

The ribbed belt for the A/C compressor and alternator tensioned correctly.

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

The doors reach their end position.

The engine is warm.

Evaporator and heater not drawing in secondary air (at maximum fresh-air blower speed).

With engine running and A/C system set to maximum cooling output, pay attention to the following points:

The fresh air blower is running.

The coolant fan must be running or it must be switched on.

The recirculation/fresh air door must be in the “recirculation” position.

Ambient temperature is greater than 15 ⁰C.

The A/C Evaporator Temperature Switch -E33- is installed correctly and its switch temperatures are correct.

Checking with Expansion Valve and Receiver/Dryer, without Regulated A/C Compressor

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Checking

– Turn off the ignition. – Connect pressure gauge battery (A/C service station). – Take pr ...

Other materials:

Pressure Relief Valve
Caution Non-approved tools or materials such as leak sealing additives can cause damage or malfunctions in the system. Only use tools and materials approved by the manufactu ...

Explanation of Test Results
1 - Type of test. 2 - Battery test result. 3 - Measured voltage 4 - Measured cold start value. 5 - Cold st ...

Midtronics Battery Tester -MCR340VKT-, Troubleshooting
Sometimes the display shows the malfunction or the messages based on the condition. The following is a list of the most frequent displayed messages together with suggested solutions. Note Refer to the MCR3 ...