Toyota T100 1996, Руководство по обслуживанию, Страница: 1979 / 2062

I01393
Condition : Does not cool
AC − 8
− AIR CONDITIONING AIR CONDITIONING SYSTEM
1996 TOYOTA T100 (RM449U)
(9) Defective compression compressor
Symptom seen in
refrigeration system
Probable cause Diagnosis Remedy
Pressure too high on low and
high pressure sides
Pressure too low on high pres-
sure side
Internal leak in compressor
Compression defective
Valve leaking or broken sliding
parts
Repair or replace compressor
3. INSPECT IDLE − UP SPEED
(a) Warm up engine.
(b) Inspect idle − up speed when the these conditions are es-
tablished.
Warm up engine
Blower speed control switch at ”HI” position
A/C switch ON
Temperature control dial at ”COOL” position
Magnetic clutch condition Idle − up speed
3RZ − FE Engine −
Magnetic clutch not engaged 700 ± 50 rpm
Magnetic clutch engaged 900 ± 50 rpm
5VZ − FE Engine −
Magnetic clutch not engaged 700 ± 50 rpm
Magnetic clutch engaged 850 ± 50 rpm
If idle speed is not as specified, check idle control system.
4. INSPECT FOR LEAKAGE OF REFRIGERANT
(a) Perform in these conditions:
Stop engine.
Secure good ventilation (If the gas leak detector
may not react to volatile gases which are not refrig-
erant, such as evaporated gasoline and exhaust
gas.)
Repeat the test 2 or 3 times.
Make sure that there is some refrigerant remaining
in the refrigeration system.
When compressor is OFF: approx. 392
− 588 kPa
(4 − 6 kgf/ cm
2
, 57 − 85 psi)