Toyota Tundra 2005 Service - Repair - Maintenance page 3417

AC-52
AIR CONDITIONING - COMPRESSOR AND MAGNETIC CLUTCH (1GR-FE)
COMPRESSOR AND MAGNETIC
CLUTCH (1GR-FE)
ON-VEHICLE INSPECTION
1. SET MANIFOLD GAUGE SET (See page
2. START ENGINE
3. INSPECT COMPRESSOR FOR METALLIC SOUND
Check if a metallic sound can be heard from the compressor
when the A/C switch is on.
If a metallic sound cannot be heard, replace the compressor as-
sembly.
4. INSPECT REFRIGERANT PRESSURE
(See page
5. STOP ENGINE
6. INSPECT VISUALLY FOR LEAKAGE OF REFRIGER-
ANT FROM SAFETY SEAL
Using a gas leak detector, check for leakage of refrigerant.
If there is any leakage, replace the compressor assembly.
7. REMOVE MANIFOLD GAUGE SET
(See page
8. CHECK FOR LEAKAGE OF GREASE FROM CLUTCH
BEARING
9. CHECK FOR SIGNS OF OIL ON PRESSURE PLATE
If necessary, repair or replace the pressure plate.
10. INSPECT MAGNETIC CLUTCH BEARING FOR NOISE
(a) Start the engine.
(b) Check if abnormal noise is heard from near the compres-
sor when the A/C switch is OFF.
If abnormal noise is being emitted, replace the magnetic clutch.
11. INSPECT MAGNETIC CLUTCH OPERATION
(a) Disconnect the connector.
(b) Connect the positive (+) lead from the battery to terminal
3 on the magnetic clutch connector and the negative (-)
lead to body ground.
(c) Check that the magnetic clutch is energized.
If operation is not as specified, replace the magnetic clutch.
I28951
12. INSPECT COMPRESSOR LOCK SENSOR RESIS-
TANCE
(a) Disconnect the connector.
(b) Measure the resistance between terminals 1 and 2.
Standard resistance:
165 to 205 Ω at 20°C (68°F)
If resistance is not as specified, replace the compressor.
I28951
AC-3 )
AC-22 )
Author :
AC3SD-01
AC-20 )
Date :
5079