Checking Vacuum System

Checking Vacuum System

1. Pull off vacuum hose on vacuum reservoir.

2. Switch on vacuum hand pump.

3. Switch on ignition.

4. Press air-circulation button and set temperature pre-selector switch to maximum cooling.




5. Generate vacuum. The fresh/circulation air flaps should close, as well as the heating valve.

6. If the fresh/circulation air flaps and the heating valve do not close, although the vacuum system has no leakage, check voltage at solenoid valves