Toyota Tundra 2005 Service - Repair - Maintenance page 3373

AC-8
Condition : Does not cool
Symptom seen in
refrigeration system
z Pressure too high on both low
and high pressure sides
z Pressure too low on high pres-
sure side
AIR CONDITIONING
Probable cause
Internal leak in compressor
3.
(a)
(b)
1GR-FE Engine
Magnetic clutch not engaged
Magnetic clutch engaged
2UZ-FE Engine
Magnetic clutch not engaged
Magnetic clutch engaged
If idle speed is not as specified, check the Idle control system.
4.
(a)
- AIR CONDITIONING SYSTEM
(9) Insufficient compressor compression
Diagnosis
z Low compression
z Leak from valve or broken sliding
parts
INSPECT IDLE-UP SPEED
Warm up the engine.
Inspect idle-up speed when the following conditions are
established.
z
Warm up engine
z
Blower speed control switch at "HI" position
z
A/C switch ON
z
Temperature control dial at "COOL" position
Magnetic clutch condition
INSPECT FOR LEAKAGE OF REFRIGERANT
Perform under the following conditions:
z
Stop the engine.
z
Secure good ventilation (If not, the gas leak detec-
tor may react to volatile gases witch are not refriger-
ant, such as evaporated gasoline and exhaust gas.)
z
Repeat the test 2 or 3 times.
z
Make sure that there is some refrigerant remaining
in the refrigeration system.
When the compressor is OFF: approx. 392 to 588
kPa (4 to 6 kgf/ cm
Author :
Remedy
Repair or replace compressor
Idle-up speed
-
700 ± 50 rpm
700 ± 50 rpm
-
750 ± 50 rpm
800 ± 50 rpm
2
, 57 to 85 psi)
Date :
I01393
5035