Refrigerant

AIR CONDITIONING: REFRIGERANT: ON-VEHICLE INSPECTION

ON-VEHICLE INSPECTION

1. INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET

(a) Check the sight glass of the cooler unit refrigerant liquid pipe E.
(1) Set the vehicle according to the conditions below.

(2) Check the sight glass under these conditions.

HINT: Bubbles in the sight glass with the room temperature higher than usual can be considered normal if cooling is sufficient.

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.
Gauge readings (Reference)
Test conditions:
- Temperature at the air inlet with the switch set at RECIRC is 30 to 35°C (86 to 95°F)
- Blower speed control switch at "HI" position
- Temperature control switch at "MAX COLD" position
- A/C switch ON
- Fully open doors

(1) The refrigeration system functions normally
Gauge reading:
Low-pressure side:
0.15 to 0.25 MPa (1.5 to 2.5 kgf/cm2)
High-pressure side:
1.37 to 1.57 MPa (14 to 16 kgf/cm2)
(2) Moisture present in refrigeration system