Checking Refrigerant System With Manifold Gauge

Since Refrigerant-134a (HFC-134a) is used in the air conditioning system in this vehicle, be sure to use manifold gauges, charging hoses and other air conditioning service tools for HFC-134a when checking the refrigerant system.

Conditions:
^ Run the engine at Idling
^ Air conditioning switch is "ON"
^ Run the blower motor at "HIGH" position
^ Temperature control lever set to "MAX COLD"
^ Air source selector lever at "CIRC"
^ Open the engine hood
^ Close all the doors




Normal pressure;
At ambient temperature:
Approx. 25 - 30°C (77 - 86°F)
Low-pressure side:
Approx. 147.1 - 294.2 kPa (21.3 - 42.7 psi)
High-pressure side:
Approx. 1372.9 - 1863.3 kPa (199.1 - 270.2 psi)
Refer to the table on refrigerant pressure-temperature relationship.

Connect the manifold gauge
Low-pressure hose (LOW) - Suction side
High-pressure hose (HI) - Discharge side