Initial Inspection

REFRIGERANT

ON VEHICLE INSPECTION

1. INSPECT REFRIGERANT VOLUME
a. Check the sight glass on the liquid tube.

Test conditions:
- Engine is running at 1,500 rpm
- Single A/C:
Blower speed control switch at "HI" position
- Dual A/C:
Front blower switch at "HI" position Rear blower switch at "HI" position
- A/C switch ON
- Single A/C:
Temperature control switch at "MAX. COOL" position
- Dual A/C:
Rear temperature control switch at "MAX. COOL" position Front driver side temperature control switch at "MAX. COOL" position
Front passenger side temperature control switch at "MAX. COOL" position
- Fully open the doors

2. INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET
a. This is a method in which 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 2,000 rpm
- Blower speed control switch is at "HI"
- Temperature control dial is at "COOL"

HINT: It should be noted that the gauge indications may vary slightly due to ambient temperature conditions.

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)