Refrigerant

ON-VEHICLE INSPECTION

1. INSPECT REFRIGERANT VOLUME
a. Check the sight glass on the liquid tube sub assy A.
Test conditions:
- Engine is running at 1,500 rpm.
- Blower speed control switch is at HI.
- A/C switch is on.
- Temperature control dial is in the MAX. COOL position.
- Doors are fully open.

2. INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET
a. This is a method in which the trouble is located by using a manifold gauge set. Read the manifold gauge pressure when these conditions are established.
Test conditions:
- Temperature at the air inlet with the switch set at RECIRC is 30 to 35°C (86 to 95°F).
- Engine is running at 1,500 rpm.
- Blower speed control switch is at HI.
- Temperature control dial is at COOL.
- A/C switch is on.
- Doors are fully open.

1. Normally functioning refrigeration system.
Gauge reading:
Low pressure side:
0.15 to 0.25 MPa (1.5 to 2.5 kgf/sq.cm)
High pressure side:
1.37 to 1.57 MPa (14 to 16 kgf/sq.cm)