TOYOTA SEQUOIA 2001 Service Repair Manual

AC1JY±05
EM6656
AC±16
± AIR CONDITIONINGDRIVE BELT
3743 Author: Date:
2005 SEQUOIA (RM1146U)
REMOVAL
REMOVE DRIVE BELT
Loosen the drive belt tension by turning the drive belt tensioner
counterclockwise, and remove the drive belt.

EM6656
AC3GT±02
± AIR CONDITIONINGDRIVE BELT
AC±17
3744 Author: Date:
2005 SEQUOIA (RM1146U)
INSTALLATION
INSTALL DRIVE BELT
Turn the drive belt tensioner counterclockwise then install the
drive belt.

I21359
Low
Pressure
Charging
HoseSingle A/C:
Dual A/C:
High Pressure
Charging HoseAC1K0±04
N04392
Sleeve AC±18
± AIR CONDITIONINGMANIFOLD GAUGE SET
3745 Author: Date:
2005 SEQUOIA (RM1146U)
MANIFOLD GAUGE SET
SET ON
1. CONNECT CHARGE HOSE TO MANIFOLD GAUGE
SET
Tighten the nuts by hand.
CAUTION:
Do not connect the wrong hoses.
2. CONNECT QUICK DISCONNECT ADAPTERS TO
CHARGING HOSES
Tighten the nuts by hand.
3. CLOSE BOTH VALVES OF MANIFOLD GAUGE SET
4. REMOVE CAPS FROM SERVICE VALVES ON RE-
FRIGERANT LINE
5. CONNECT QUICK DISCONNECT ADAPTERS TO SER-
VICE VALVES
HINT:
Push the quick disconnect adapter onto the service valve, then
slide. Slide the sleeve of the quick disconnect adapter down-
ward to lock it.

AC1K1±05
N06553
± AIR CONDITIONINGMANIFOLD GAUGE SET
AC±19
3746 Author: Date:
2005 SEQUOIA (RM1146U)
SET OFF
1. CLOSE BOTH VALVES OF MANIFOLD GAUGE SET
2. DISCONNECT QUICK DISCONNECT ADAPTERS
FROM SERVICE VALVES ON REFRIGERANT LINE
HINT:
Slide the sleeve of the quick disconnect adapter upward to un-
lock the adapter and remove it from the service valve.
3. INSTALL CAPS TO SERVICE VALVES ON REFRIGER-
ANT LINE

AC1K2±03
AC±20
± AIR CONDITIONINGREFRIGERANT LINE
3747 Author: Date:
2005 SEQUOIA (RM1146U)
REFRIGERANT LINE
ON±VEHICLE INSPECTION
1. INSPECT HOSE AND TUBE CONNECTIONS FOR LOOSENESS
2. INSPECT HOSES AND TUBES FOR LEAKAGE
Using a gas leak detector, check for leakage of refrigerant.

AC3GU±02
I21436
Suction Tube
Suction Hose
5.4 (55, 48 in.´lbf)
Liquid Tube
N´m (kgf´cm, ft´lbf) : Specified torque Single A/C:
Discharge Hose
Liquid Tube
Liquid
Tube
Dual A/C:
Front Side:
Suction Tube
Suction Hose
Discharge Hose
Liquid
Tube
5.4 (55, 48 in.´lbf)
5.4 (55, 48 in.´lbf)
5.4 (55, 48 in.´lbf)
10 (100, 7)
5.4 (55, 48 in.´lbf)
5.4 (55, 48 in.´lbf)
10 (100, 7)
± AIR CONDITIONINGREFRIGERANT LINE
AC±21
3748 Author: Date:
2005 SEQUOIA (RM1146U)
LOCATION

I21437
Dual A/C:
Rear Side:
Liquid Tube
Suction Tube
5.4 (55, 48)
N´m (kgf´cm, in.´lbf) : Specified torque
AC±22
± AIR CONDITIONINGREFRIGERANT LINE
3749 Author: Date:
2005 SEQUOIA (RM1146U)

AC1K4±04
± AIR CONDITIONINGREFRIGERANT LINE
AC±23
3750 Author: Date:
2005 SEQUOIA (RM1146U)
REPLACEMENT
1. DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM
2. REPLACE FAULTY TUBE OR HOSE
NOTICE:
Cap the openings immediately to keep moisture or dirt out of the system.
3. TIGHTEN JOINT OF BOLT OR NUT TO SPECIFIED TORQUE
NOTICE:
Do not exceed specified torque.
Part tightenedN´mkgf´cmft´lbf
Receiver x Liquid tube5.45548 in.´lbf
Condenser x Discharge hose5.45548 in.´lbf
Condenser x Liquid tube5.45548 in.´lbf
Compressor x Discharge hose101007
Compressor x Suction hose101007
Liquid and suction tube (Nut)5.45548 in.´lbf
Liquid and suction tube x Rear A/C unit5.45548 in.´lbf
4. EVACUATE AIR IN REFRIGERATION SYSTEM AND CHARGE SYSTEM WITH 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.)
5. INSPECT FOR LEAKAGE OF REFRIGERANT
Using a gas leak detector, check for leakage of refrigerant.
6. INSPECT AIR CONDITIONING OPERATION

AC3GV±02
I21372
I21373
AC±24
± AIR CONDITIONINGCOOLING UNIT
3751 Author: Date:
2005 SEQUOIA (RM1146U)
COOLING UNIT
ON±VEHICLE INSPECTION
1. INSPECT FOR LEAKAGE OF REFRIGERANT
(a) Remove the console box assembly.
(b) Remove the glove compartment door.
(c) Remove the lower No. 2 finish panel.
(d) Remove the heater to register duct No. 4.
(e) Remove the lower LH finish panel.
(f) Remove the lower cover (See page BO±89).
(g) Remove the blower controller.
(1) Disconnect the connector.
(2) Remove the 2 screws and blower motor linear con-
troller.
(h) Using a gas leak detector, check for leakage.
If there is leakage, check the tightening torque at the joints or
check the evaporator.
(i) Install the blower motor linear controller with the 2 screws.
(j) Install the lower cover.
(k) Install the lower LH finish panel.
(l) Install the lower No.2 finish panel.
(m) Install the glove compartment door (See page BO±97).
2. INSPECT EXPANSION VALVE
(a) Set the manifold gauge set.
(b) Run the engine.
(c) Check quantity of gas with the sight glass in refrigeration
cycle.
(1) Run the engine at 1,500 rpm for at least 5 minutes.
(2) Then check that the high pressure reading is 1.37
to 1.57 Mpa (14 to 16 kgm/cm
2, 199 to 228 psi).
(d) Check the expansion valve.
If the expansion valve is faulty, the low pressure reading will
drop to 0 kPa (0 kgf/cm
2, 0 psi).
HINT:
When the low pressure reading drops to 0 kPa (0 kgf/cm
2, 0
psi), there is no difference in temperature between the IN and
OUT sides of the receiver.
3. INSPECT THERMISTOR RESISTANCE
(a) Disconnect the connector.
(b) Measure the resistance between terminals.
Standard resistance: 1,500 W at 25°C (77°F)
If resistance is not as specified, replace the thermistor.

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