Corolla CE Sedan L4-1794cc 1.8L DOHC MFI (2001)
Evaporator Case: Testing and Inspection
On-Vehicle Inspection
COOLING UNIT
ON-VEHICLE INSPECTION
1. REMOVE FRONT DOOR SCUFF PLATE RH
2. REMOVE COWL SIDE TRIM RH
3. REMOVE LOWER PANEL
4. REMOVE BLOWER RESISTOR
a. Disconnect the connector.
b. Remove the 2 screws and the blower resistor.
5. INSPECT EVAPORATOR AND FITTINGS FOR LEAKAGE
Using a gas leak detector, check for leakage.
If there leakage, check the tightening torque at the joints or check the evaporator.
6. CHECK QUANTITY OF GAS DURING REFRIGERATION CYCLE
7. SET ON MANIFOLD GAUGE SET
8. RUN ENGINE
a. Run the engine at 1,500 rpm for at least 5 minutes.
b. Then check that the high pressure reading is 1.37 - 1.57 MPa (14 - 16 kg/sq.cm, 199 - 228 psi).
9. CHECK EXPANSION VALVE
If the expansion valve is faulty, low pressure reading will drop to 0 kPa (0 kg/sq.cm, 0 psi).
HINT: When the low pressure drops to 0 kPa (0 kg/sq.cm, 0 psi), feel the receiver's IN and OUT sides for no temperature difference.
10. INSPECT THERMISTOR RESISTANCE
a. Disconnect the connector.
b. Measure resistance between terminals 3 and 4.
Standard resistance: 1,500 Ohms at 25 °C (77 °F)
If resistance is not as specified, replace the thermistor.
