Toyota Sequoia (2005). Manual - part 940

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 CONDITIONING

REFRIGERANT LINE

3749

AC1K4–04

–

AIR CONDITIONING

REFRIGERANT LINE

AC–23

3750

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 tightened

N·m

kgf·cm

ft·lbf

Receiver x Liquid tube

5.4

55

48 in.·lbf

Condenser x Discharge hose

5.4

55

48 in.·lbf

Condenser x Liquid tube

5.4

55

48 in.·lbf

Compressor x Discharge hose

10

100

7

Compressor x Suction hose

10

100

7

Liquid and suction tube (Nut)

5.4

55

48 in.·lbf

Liquid and suction tube x Rear A/C unit

5.4

55

48 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 CONDITIONING

COOLING UNIT

3751

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 

Ω

 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

Grommet

Insulator

Front
Console
Box

Console
Upper
Panel

Rear
Console
Box

–

AIR CONDITIONING

COOLING UNIT

AC–25

3752

COMPONENTS