Measuring low pressure in order to localize a fault
WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Both high and low pressure can be measured. Connect both the high and low pressure hoses (red and blue)
Connect the blue hose between terminal 10 on the station and the low pressure connection on the air conditioning (A/C) system.
Turn the switch (1) to the PV position.
Turn the switch (2) to the test position.
Start the engine. Start the air conditioning (A/C) system.
The low pressure valve now operates depending on the value displayed by the low pressure gauge (14).