On-Vehicle Inspection
1. INSPECT EXPANSION VALVEa. Check quantity of gas during refrigeration cycle.
b. Set on manifold gauge set.
c. Start engine.
d. Operate the A/C system.
e. Inspect the expansion valve.
1. Run engine at 1,500 rpm for a least 5 minutes.
2. Check the high pressure reading is 1.37 - 1.57 MPa (14 - 16 kgf/Sq.cm, 19 g - 288 psi).
3. Check the low pressure reading.
If the low pressure reading is 0 kPa (0 kgf/Sq.cm, 0 psi), replace the expansion valve.
2. REMOVE THESE PARTS:
a. Rear door scuff plate RH
b. Rear floor mat support plate
c. Quarter trim panel RH
3. INSPECT THERMISTOR RESISTANCE
a. Disconnect the connector.
b. Measure resistance between terminals 3 and 4.
Standard resistance: Approx. 1.5 K Ohms at 25° C (77° F)
If resistance is not as specified, proceed to "INSPECTION" .
4. INSPECT MAGNETIC VALVE CONTINUITY
a. Disconnect the connector.
b. Check the continuity exists between terminals 1 and 2.
If resistance is not as specified, proceed to "INSPECTION".
5. CHECK FOR LEAKAGE OF REFRIGERANT
a. Remove the power transistor.
b. Using a gas leak detector, check for leakage of refrigerant.
If there is leakage, check the evaporator or tightening torque at the joints.