TOYOTA SEQUOIA 2001 Service Repair Manual

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.

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).

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

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.

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.

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.

AC3HO±02
I21378
I22633
2
1
AC±82
± AIR CONDITIONINGREAR BLOWER MOTOR
3809 Author: Date:
2005 SEQUOIA (RM1146U)
REAR BLOWER MOTOR
INSPECTION
1. REMOVE REAR SEAT OUTER BELT FLOOR AN-
CHORS
2. REMOVE BACK DOOR SCUFF PLATE
3. REMOVE REAR DOOR SCUFF PLATE RH
4. REMOVE REAR WINDOW SIDE GARNISH
5. REMOVE REAR QUARTER TRIM PANEL RH
6. REMOVE BLOWER MOTOR
(a) Disconnect the blower motor connector.
(b) Remove the 3 screws and blower motor.
7. INSPECT BLOWER MOTOR OPERATION
Connect the positive (+) lead from the battery to terminal 2 and
the negative (±) lead to terminal 1, then check that the motor op-
erates smoothly.
If operation is not as specified, replace the blower motor.
8. INSTALL BLOWER MOTOR
9. INSTALL REAR QUARTER TRIM PANEL RH
10. INSTALL REAR WINDOW SIDE GARNISH
11. INSTALL REAR DOOR SCUFF PLATE RH
12. INSTALL BACK DOOR SCUFF PLATE
13. INSTALL REAR SEAT OUTER BELT FLOOR AN-
CHORS

AC3HP±02
I21372
± AIR CONDITIONINGBLOWER MOTOR LINEAR CONTROLLER
AC±83
3810 Author: Date:
2005 SEQUOIA (RM1146U)
BLOWER MOTOR LINEAR
CONTROLLER
INSPECTION
1. REMOVE GLOVE COMPARTMENT PARTS
2. REMOVE LOWER NO. 2 FINISH PANEL
3. REMOVE LOWER CENTER COVER
4. REMOVE LOWER LH FINISH PANEL
5. REMOVE NO. 4 HEATER TO REGISTER DUCT
6. REMOVE BLOWER MOTOR LINEAR CONTROLLER
(a) Disconnect the connector.
(b) Remove the 2 screws and blower motor linear controller.
7. INSPECT BLOWER MOTOR LINEAR CONTROLLER
(See page DI±2374)
8. INSTALL BLOWER MOTOR LINEAR CONTROLLER
(a) Install the blower motor linear controller with the 2 screws.
(b) Connect the connector.
9. INSTALL NO. 4 HEATER TO REGISTER DUCT
10. INSTALL LOWER LH FINISH PANEL
11. INSTALL LOWER CENTER COVER
12. INSTALL LOWER NO. 2 FINISH PANEL
13. INSTALL GLOVE COMPARTMENT PARTS

AC3HQ±02
I21379
I22616
1 2
4
I17711
3
4 AC±84
± AIR CONDITIONINGPOWER TRANSISTOR (for Rear A/C)
3811 Author: Date:
2005 SEQUOIA (RM1146U)
POWER TRANSISTOR (for Rear
A/C)
INSPECTION
1. REMOVE REAR SEAT OUTER BELT FLOOR AN-
CHORS
2. REMOVE BACK DOOR SCUFF PLATE
3. REMOVE REAR DOOR SCUFF PLATE RH
4. REMOVE REAR WINDOW SIDE GARNISH
5. REMOVE REAR QUARTER TRIM PANEL RH
6. REMOVE REAR POWER TRANSISTOR
(a) Disconnect the connector.
(b) Remove the 2 screws and the rear power transistor.
7. INSPECT POWER TRANSISTOR OPERATION
(a) Connect the positive (+) lead to terminal 1 through a
12 V ± 3.4 W test bulb and the negative (±) lead to
terminal 4.
(b) Check the test bulb lights up when another positive (+)
lead is connected to terminal 2 through a 12 V ± 3.4 W test
bulb.
If operation is not as specified, replace the power transistor.
8. INSPECT POWER TRANSISTOR RESISTANCE
Measure the resistance between terminals 3 and 4.
Standard resistance: 2.0 to 2.4 kW
If resistance is not as specified, replace the power transistor.
9. INSTALL REAR POWER TRANSISTOR
10. INSTALL REAR QUARTER TRIM PANEL RH
11. INSTALL REAR WINDOW SIDE GARNISH
12. INSTALL REAR DOOR SCUFF PLATE RH
13. INSTALL BACK DOOR SCUFF PLATE

± AIR CONDITIONINGPOWER TRANSISTOR (for Rear A/C)
AC±85
3812 Author: Date:
2005 SEQUOIA (RM1146U)
14. INSTALL REAR SEAT OUTER BELT FLOOR AN-
CHORS