Quick Check of Refrigerant Charge Amount

WARNING: This page is about a different car, the 2003 Suzuki XL-7 and 2003 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.

The following procedure can be used for quickly checking whether the A/C system has a proper charge of refrigerant or not.

Start engine and warm up to normal operating temperature (ECT more than 85 °C, 180 °F).
Operate A/C at the following conditions for a few minutes.
- Main (front) A/C switch at ON position
- Rear A/C main switch at ON position (if equipped)
- Front blower speed selector at max position
- Rear blower motor switch at max position (if equipped)
- Air flow selector at face position
- Temperature selector at max cool position
- Vehicle door at all open
- Air inlet door at recirculation position
Look at the sight glass (1) and compare what is observed with the symptoms listed in the table.

Fig 1: Sight Glass Inspection Chart
Courtesy of SUZUKI OF AMERICA CORP.

NOTE: For specified amount of refrigerant, refer to OPERATION PROCEDURE FOR CHARGING A/C WITH REFRIGERANT .

Fig 2: Looking At Sight Glass
Courtesy of SUZUKI OF AMERICA CORP.