TOYOTA SEQUOIA 2001 Service Repair Manual

I21390
X10
AC3HC±02
I21395
Marking A
B
I21396Marking B AC±46
± AIR CONDITIONINGREAR A/C UNIT
3773 Author: Date:
2005 SEQUOIA (RM1146U)
REASSEMBLY
1. ASSEMBLE REAR A/C UNIT
(a) Install the insulator and heater radiator.
(b) Install the shaft and sliding door.
(c) Assemble the A/C unit and install the 10 screws.
(d) Install the blower case, clamp and 2 screws.
2. INSTALL AIR OUTLET SERVOMOTOR
(a) Align marking A on the grid part of the case with the side
of sliding door rack B.
(b) Install the servomotor with the 3 screws.
HINT:
The projection on the gear (marking B) shall be positioned verti-
cally.
3. INSTALL EVAPORATOR
4. INSTALL EXPANSION VALVE
5. INSTALL WATER VALVE
6. INSTALL THERMISTOR
7. INSTALL POWER TRANSISTOR
8. INSTALL BLOWER MOTOR

AC3HD±01
± AIR CONDITIONINGREAR A/C UNIT
AC±47
3774 Author: Date:
2005 SEQUOIA (RM1146U)
INSTALLATION
Installation is in the reverse order of removal (See page AC±40).

AC1KT±05
I21425
Lower LH
Finish Panel
Cooling Unit
Blower Unit
Air Inlet Servomotor
Blower Motor
Heater to Register
Duct No. 4
Front Door Scuff Plate RH
Blower Unit Case
Lower Cover
Lower No. 2
Finish Panel
Glove Compartment Door
Cowl Side
Trim RH
Front
Console
Box
Console
Upper Panel
Rear
Console Box AC±48
± AIR CONDITIONINGBLOWER UNIT
3775 Author: Date:
2005 SEQUOIA (RM1146U)
BLOWER UNIT
COMPONENTS

AC1KU±06
I21448
± AIR CONDITIONINGBLOWER UNIT
AC±49
3776 Author: Date:
2005 SEQUOIA (RM1146U)
REMOVAL
1. REMOVE CONSOLE UPPER PANEL
2. REMOVE REAR CONSOLE BOX
3. REMOVE FRONT CONSOLE BOX
4. REMOVE LOWER LH FINISH PANEL
5. REMOVE GLOVE COMPARTMENT DOOR
6. REMOVE LOWER NO. 2 FINISH PANEL
7. REMOVE LOWER COVER
8. REMOVE COOLING UNIT (See page AC±26)
9. REMOVE BLOWER UNIT
(a) Disconnect the connector from the blower motor.
(b) Disconnect the connector from the air inlet servomotor.
(c) Remove the nut, bolt and blower unit.

AC3HE±02
I21450
I21449
AC±50
± AIR CONDITIONINGBLOWER UNIT
3777 Author: Date:
2005 SEQUOIA (RM1146U)
DISASSEMBLY
1. REMOVE BLOWER MOTOR
Remove the 3 screws and blower motor.
2. REMOVE AIR INLET SERVOMOTOR
Remove the 3 screws and servomotor.

AC1KW±04
± AIR CONDITIONINGBLOWER UNIT
AC±51
3778 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
INSPECT AIR INLET SERVOMOTOR OPERATION (See page DI±2358)

AC1KX±01
AC±52
± AIR CONDITIONINGBLOWER UNIT
3779 Author: Date:
2005 SEQUOIA (RM1146U)
REASSEMBLY
Reassembly is in the reverse order of disassembly (See page AC±50).

AC1KY±01
± AIR CONDITIONINGBLOWER UNIT
AC±53
3780 Author: Date:
2005 SEQUOIA (RM1146U)
INSTALLATION
Installation is in the reverse order of removal (See page AC±49).

AC1KZ±05
I21361
3
3
I21362
12
AC±54
± AIR CONDITIONINGCOMPRESSOR AND MAGNETIC CLUTCH
3781 Author: Date:
2005 SEQUOIA (RM1146U)
COMPRESSOR AND MAGNETIC
CLUTCH
ON±VEHICLE INSPECTION
1. SET MANIFOLD GAUGE SET (See page AC±18)
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 AC±3)
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 AC±19)
8. CHECK FOR LEAKAGE OF GREASE FROM CLUTCH
BEARING
9. CHECK FOR SIGNS OF OIL ON PRESSURE PLATE
If necessary, repair or replace.
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 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.
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 W at 20°C (68°F)
If resistance is not as specified, replace the compressor.

AC1L0±05
I21363
Compressor Stator

Snap RingRotor
Shim Pressure Plate
18 (184, 12.3)
10 (100, 7)
Drive BeltCompressor
O±Ring
N´m (kgf´cm, ft´lbf) : Specified torque
Cooler Bracket47 (480, 35)

Non±reusable part
25 (255, 18)
± AIR CONDITIONINGCOMPRESSOR AND MAGNETIC CLUTCH
AC±55
3782 Author: Date:
2005 SEQUOIA (RM1146U)
COMPONENTS