Toyota AVENSIS 2000 Supplement Manual page 750

AVENSIS/CORONA SUP (RM781E)
AIR CONDITIONING
COMPRESSOR AND MAGNETIC
CLUTCH
ON–VEHICLE INSPECTION
1.
Check there is abnormal metallic sound from the compressor
when the A/C switch is ON.
If abnormal metallic sound is heard, replace the compressor as-
sembly.
2.
3.
Using a gas leak detector, check for leakage of refrigerant.
If there is any leakage, replace the compressor assembly.
4.
2
(a)
(b)
1
If resistance is not as specified, replace the sensor.
5.
I12997
6.
7.
(a)
(b)
If abnormal noise is being emitted, replace the magnetic clutch.
8.
3
(a)
(b)
(c)
If operation is not as specified, replace the magnetic clutch.
I12998
– COMPRESSOR AND MAGNETIC CLUTCH
INSPECT COMPRESSOR FOR METALLIC SOUND
INSPECT REFRIGERANT PRESSURE (See page
AC–1)
INSPECT VISUALLY FOR LEAKAGE OF REFRIGER-
ANT
INSPECT COMPRESSOR LOCK SENSOR RESIS-
TANCE
Disconnect the connector.
Measure resistance between terminals 1 and 2 .
Standard resistance:
165 – 205 Ω at 20 °C (68 °F)
CHECK FOR LEAKAGE OF GREASE FROM CLUTCH
BEARING
CHECK FOR SIGNS OF OIL ON PRESSURE PLATE OR
ROTOR
INSPECT MAGNETIC CLUTCH BEARING FOR NOISE
Start engine.
Check for abnormal noise from the compressor when the
A/C switch is OFF.
INSPECT MAGNETIC CLUTCH OPERATION
Disconnect the connector.
Connect the positive (+) lead form the battery to terminal
3 and the negative (–) lead to the body ground.
Check that the magnetic clutch energized.
AC–11
AC1GA–05