2001 TOYOTA SEQUOIA air conditioning

AC3GW±02
I21420
Lower LH
Finish Panel
Lower Cover

O±Ring
Suction
Tube
Liquid Tube

O±Ring
Clamp
Cooling Unit
Heater to Register
Duct No. 4
Cowl Side Trim RH
Front Door Scuff Plate RH
Lower No. 2
Finish Panel
Glove Compartment Door
Upper Unit Case
Evaporator
Thermistor
Lower Unit Case

Packing
O±Ring
Grommet
Drain Hose
Packing
Blower Controller
N´m (kgf´cm, in.´lbf) : Specified torque
Non±reusable part
3.5 (36, 31)
Liquid and Suction Tube
Expansion
Valve
Clamp
GrommetInsulator
Front
Console
Box Console
Upper
Panel
Rear
Console
Box
± AIR CONDITIONINGCOOLING UNIT
AC±25
3752 Author: Date:
2005 SEQUOIA (RM1146U)
COMPONENTS

AC3GX±02
I21360
I03838
SST
I03839
SST
Push
SSTPull
Release
Lever AC±26
± AIR CONDITIONINGCOOLING UNIT
3753 Author: Date:
2005 SEQUOIA (RM1146U)
REMOVAL
1. DISCHARGE REFRIGERANT FROM REFRIGERATION
SYSTEM
HINT:
At the time of installation, refer to the following:

Evacuate air from the refrigeration system.

Charge the system with refrigerant and inspect for leak-
age of refrigerant.
Specified amount:
Single A/C: 750 ± 50 g (26.45 ± 1.76 oz.)
Dual A/C: 1050 ± 50 g (37.03 ± 1.76 oz.)
2. DISCONNECT LIQUID AND SUCTION TUBE
(a) Using SST, remove the 2 piping clamps.
SST 09870±00015 (Suction tube)
09870±00025 (Liquid tube)
(1) Install SST to the piping clamp.
HINT:
Confirm the directions of the piping clamp claw and SST using
the illustration on the caution label.
(2) Push down SST and release the clamp lock.
NOTICE:
Be careful not to deform the tubes, when pushing SST.
(3) Pull SST slightly and push the release lever, then re-
move the piping clamp with SST.
(4) Remove the piping clamp from SST.
(b) Disconnect both tubes.

I06919
Disconnect the tube
by hand
Screwdriver
Tube
I06878
Connect Wrong
Gap
I21374
± AIR CONDITIONINGCOOLING UNIT
AC±27
3754 Author: Date:
2005 SEQUOIA (RM1146U)
NOTICE:

Do not use tools like a screwdriver to remove the
tube.

Cap the openings immediately to keep moisture or
dirt out of the system.
HINT:
At the time of reassembly, refer to the following:

Lubricate 4 new O±rings with compressor oil and install
them to the tubes.

After connection, check the claw of the piping clamp is se-
curely engaged.
3. REMOVE CONSOLE UPPER PANEL
4. REMOVE REAR CONSOLE BOX
5. REMOVE FRONT CONSOLE BOX
6. REMOVE GLOVE COMPARTMENT PARTS
7. REMOVE LOWER NO. 2 FINISH PANEL
8. REMOVE LOWER LH FINISH PANEL
9. REMOVE LOWER COVER (See page BO±89)
10. REMOVE NO. 4 HEATER TO REGISTER DUCT
11. REMOVE COOLING UNIT
(a) Disconnect the connectors.
(b) Remove the 3 screws and the bolt, then the cooling unit.

AC3GY±02
I21421
I21422
AC±28
± AIR CONDITIONINGCOOLING UNIT
3755 Author: Date:
2005 SEQUOIA (RM1146U)
DISASSEMBLY
1. REMOVE BLOWER MOTOR LINEAR CONTROLLER
Remove the 2 screws and blower motor linear controller.
2. SEPARATE UPPER AND LOWER UNIT CASES
(a) Disconnect the connector clamp of the thermistor from
the upper unit case.
(b) Using a knife, cut off each packing.
(c) Remove the clip, 6 screws, and grommet.
(d) Separate the upper and lower unit cases, then pull out the
thermistor from the evaporator.
3. REMOVE EVAPORATOR FROM LOWER UNIT CASE
HINT:
At the time of reassembly, refer to the following:
If the evaporator is replaced, add compressor oil to the com-
pressor.
Add 40 to 50 cc (1.4 to 1.7 fl.oz.)
Compressor oil: ND±OIL 8 or equivalent
4. REMOVE EXPANSION VALVE
Using a hexagon wrench (5.0 mm (0.20 in.)), remove the 2 bolts
and separate the expansion valve, evaporator and tubes.
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
HINT:
At the time of reassembly, refer to the following item:
Lubricate 4 new O±rings with compressor oil and install them
to the tubes and valve.

AC3GZ±02
± AIR CONDITIONINGCOOLING UNIT
AC±29
3756 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. CHECK EVAPORATOR FINS FOR BLOCKAGE
If the fins are clogged, clean them with compressed air.
2. CHECK FOR CRACKS AND SCRATCHES
If necessary, repair or replace damaged parts.
3. INSPECT THERMISTOR RESISTANCE (See page DI±2325)

AC3H0±01
AC±30
± AIR CONDITIONINGCOOLING UNIT
3757 Author: Date:
2005 SEQUOIA (RM1146U)
REASSEMBLY
Reassembly is in the reverse order of disassembly (See page AC±28).

AC3H1±01
± AIR CONDITIONINGCOOLING UNIT
AC±31
3758 Author: Date:
2005 SEQUOIA (RM1146U)
INSTALLATION
Installation is in the reverse order of removal (See page AC±26).

AC3H2±02
I21423
Non±reusable part
Instrument Panel
Reinforcement Defroster Nozzle
Center Heater To Register Duct
Brace No.1
Brace No.2
Heater To
Register Duct
No. 1
Heater Unit
Cooling Unit
Heater Radiator
Foot Air Duct Air Vent DuctHeater Unit Case
O±Ring
ClampGrommet
Heater Radiator
PipePacking
Clamp
Clamp
Clamp
Air Outlet Servomotor
Aspirator Hose
Air Mix Servomotor
Heater to
Register
Duct No. 4
Rear Foot Duct
AC±32
± AIR CONDITIONINGHEATER UNIT
3759 Author: Date:
2005 SEQUOIA (RM1146U)
HEATER UNIT
COMPONENTS