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 °C (60).
• The A/C Evaporator Temperature Switch -E33- is installed correctly and its switch temperatures are correct.