Page 3809 of 4323

AC3IB±02
I21380
I21383
AC±74
± AIR CONDITIONINGREAR A/C EXPANSION VALVE
3801 Author: Date:
2005 SEQUOIA (RM1146U)
REAR A/C EXPANSION VALVE
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:
Dual A/C: 1050 ± 50 g (37.03 ± 1.76 oz.)
2. DRAIN ENGINE COOLANT FROM RADIATOR
HINT:
It is not necessary to drain out all coolant.
3. REMOVE REAR SEAT OUTER BELT FLOOR AN-
CHORS
4. REMOVE BACKDOOR SCUFF PLATE
5. REMOVE REAR DOOR SCUFF PLATE RH
6. REMOVE UPPER BACK DOOR GARNISH
7. REMOVE REAR WINDOW SIDE GARNISH RH
8. REMOVE REAR QUARTER TRIM PANEL RH
9. REMOVE QUARTER PILLAR GARNISH RH
10. DISCONNECT LIQUID AND SUCTION TUBES
Remove the 2 bolts and disconnect both tubes.
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
NOTICE:
Cap the openings immediately to keep moisture or dirt out
of the system.
HINT:
At the time of installation, refer to the following:
Lubricate 2 new O±rings with compressor oil and install them
to the tubes.
11. REMOVE AIR DUCT
(a) Remove the 3 clips and cover.
(b) Remove the 2 air ducts.
(c) Disconnect the connectors and wire harness clamps.
Page 3810 of 4323
I21799
I21384
I21387
Nut A:
Nut B:
± AIR CONDITIONINGREAR A/C EXPANSION VALVE
AC±75
3802 Author: Date:
2005 SEQUOIA (RM1146U)
12. REMOVE EXPANSION VALVE
(a) Remove the 4 screws and 2 brackets.
(b) Pry out the packing.
HINT:
At the time of installation, refer to the following:
Do not refuse the packing.
(c) Using a hexagon wrench (5.0 mm (0.20 in.)), remove the
2 bolts.
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
(d) Remove the 3 bolts.
(e) Lift the A/C unit until the tube and accessary can be re-
moved.
(f) Remove the tube and accessary.
(g) Remove the holder and disconnect the heat sensing
tube.
(h) Loosen the 2 nuts and remove the expansion valve.
Torque:
Nut A: 13 N´m (135 kgf´cm, 10 in.´lbf)
Nut B: 22 N´m (235 kgf´cm, 16 in.´lbf)
HINT:
At the time of installation, refer to the following:
Lubricate 2 new O±rings with compressor oil and install them
to the expansion valve.
Page 3811 of 4323
AC3IC±01
AC±76
± AIR CONDITIONINGREAR A/C EXPANSION VALVE
3803 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
INSPECT EVAPORATOR
(a) Check evaporator fins for blockage.
If the fins are clogged, clean them with compressor air.
NOTICE:
Never use water to clean the evaporator.
(b) Check fitting for cracks or scratches.
If necessary, repair or replace.
Page 3812 of 4323
AC3ID±01
± AIR CONDITIONINGREAR A/C EXPANSION VALVE
AC±77
3804 Author: Date:
2005 SEQUOIA (RM1146U)
INSTALLATION
Installation is in the reverse order of removal (See page AC±74).
Page 3813 of 4323
AC3HK±02
I21801
COOL
WARM AC±78
± AIR CONDITIONINGWATER VALVE
3805 Author: Date:
2005 SEQUOIA (RM1146U)
WATER VALVE
ON±VEHICLE INSPECTION
1. WARM UP ENGINE
2. DISCONNECT WATER VALVE CONTROL CABLE
3. INSPECT WATER VALVE OPERATION
(a) Check that warm air comes out the vent when the water
valve lever is moved to the ºWARMº position.
(b) Check that cool air comes out when the water valve is
moved to the ºCOOLº position.
If operation is not as specified, replace the water valve.
4. CONNECT WATER VALVE CONTROL CABLE
Page 3814 of 4323
AC3HL±02
I21369
I21370
I21371
± AIR CONDITIONINGWATER VALVE
AC±79
3806 Author: Date:
2005 SEQUOIA (RM1146U)
REMOVAL
1. DRAIN ENGINE COOLANT FROM RADIATOR
HINT:
It is not necessary to drain out all the coolant.
2. DISCONNECT WATER VALVE CONTROL CABLE
FROM WATER VALVE
Disconnect the control cable.
3. DISCONNECT WATER HOSES
(a) Using pliers, grip the claws of the hose clips and slide the
hose clips along the hose.
(b) Disconnect the water hoses.
HINT:
At the time of installation, refer to the following:
Heater radiator pipe:
Push the water hose onto the heater radiator pipe up to
the second ridge on the pipe.
Water valve:
Push the water hose onto the water valve pipe till touching
the body of the water valve.
4. REMOVE WATER VALVE
Remove the bolt and water valve.
Page 3815 of 4323
AC3HM±02
I21801
COOL
WARM
I22637
COOL AC±80
± AIR CONDITIONINGWATER VALVE
3807 Author: Date:
2005 SEQUOIA (RM1146U)
INSTALLATION
Installation is in the reverse order of removal (See page
AC±79).
1. AFTER INSTALLATION, CHECK WATER VALVE OP-
ERATION
(a) Turn the ignition switch to ON.
(b) Operate temperature control switches to ºMAX. COOLº
and ºMAX. WARMº, then check water valve operation, as
shown in the illustration.
If operation is not as specified, proceed to the next step.
2. ADJUST WATER VALVE CONTROL CABLE
(a) Disconnect the control cable.
(b) Turn the ignition switch to ON.
(c) Set temperature control switches to ºMAX. COOLº.
(d) Set the water valve lever to the ºCOOLº position, connect
the control cable and lock the clamp.
HINT:
Lock the clamp while lightly pushing the outer cable in the direc-
tion shown by the arrow in the illustration.
Page 3816 of 4323
I11143
AC3HN±02
N16762
21
± AIR CONDITIONINGBLOWER MOTOR
AC±81
3808 Author: Date:
2005 SEQUOIA (RM1146U)
BLOWER MOTOR
INSPECTION
1. REMOVE BLOWER MOTOR
(a) Disconnect the connector.
(b) Remove the 3 screws and motor.
2. INSPECT BLOWER MOTOR OPERATION
Connect the positive (+) lead from the battery to terminal 1 and
the negative (±) lead to terminal 2, then check that the motor op-
erates smoothly.
If operation is not as specified, replace the blower motor.
3. INSTALL BLOWER MOTOR
(a) Install the motor with the 3 screws.
(b) Connect the connector.