TOYOTA SIENNA 2007 Service Repair Manual

AC–214AIR CONDITIONING – AIR INLET CONTROL SERVO MOTOR (for Manual Air Conditioning
System)
AC
AIR INLET CONTROL SERVO
MOTOR (for Manual Air
Conditioning System)
ON-VEHICLE INSPECTION
1. INSPECT AIR INLET CONTROL SERVO MOTOR
(a) Remove the air inlet control servo motor.
(b) Connect the positive (+) lead from the battery to
terminal 5 and negative (-) lead to terminal 1, then
check that the lever turns to "RECIRCULATION"
side smoothly.
(c) Connect the positive (+) lead from the battery to
terminal 5 and negative (-) lead to terminal 2, then
check that the lever turns to "FRESH" side
smoothly.
NOTICE:
While using the battery during inspection, do
not bring the positive and negative tester
probes too close to each other as a short circuit
may occur.
If the operation is not as specified, replace the air
inlet control servo motor.
E145188E03

AIR CONDITIONING – AIR OUTLET CONTROL SERVO MOTORAC–215
AC
AIR OUTLET CONTROL SERVO
MOTOR
ON-VEHICLE INSPECTION
1. INSPECT AIR OUTLET CONTROL SERVO MOTOR
(a) Remove the air outlet control servo motor.
(b) Connect the positive (+) lead from the battery to
terminal 4 and negative (-) lead to terminal 5, then
check that the lever turns to "DEF" position.
(c) Connect the positive (+) lead from the battery to
terminal 5 and negative (-) lead to terminal 4, then
check that the lever turns to "FACE" position.
NOTICE:
While using the battery during inspection, do
not bring the positive and negative tester
probes too close to each other as a short circuit
may occur.
If the operation is not as specified, replace the air
outlet control servo motor.
E147338E03

AC–216AIR CONDITIONING – AIR OUTLET CONTROL SERVO MOTOR (for Rear Air Conditioning
System)
AC
AIR OUTLET CONTROL SERVO
MOTOR (for Rear Air Conditioning
System)
ON-VEHICLE INSPECTION
1. INSPECT REAR AIR OUTLET CONTROL SERVO
MOTOR
(a) Inspect servo motor operation.
(1) Connect the positive (+) lead from the battery
to terminal 4 and negative (-) lead to terminal 5,
then check that the arm turns to "FOOT" side
smoothly.
(2) Connect the positive (+) lead from the battery
to terminal 5 and negative (-) lead to terminal 4,
then check that the arm turns to "FACE" side
smoothly.
If the operations are not as specified, replace
the rear air conditioning blower assembly (rear
air outlet control servo motor).
E145190E03

AC–218AIR CONDITIONING – AIR MIX CONTROL SERVO MOTOR (for Front Passenger Side)
AC
AIR MIX CONTROL SERVO
MOTOR (for Front Passenger Side)
ON-VEHICLE INSPECTION
1. INSPECT AIR MIX CONTROL SERVO MOTOR
(a) Remove the air mix control servo motor.
(b) Connect the positive (+) lead from the battery to
terminal 4 and negative (-) lead to terminal 5, then
check that the lever turns to "COOL" side smoothly.
(c) Connect the positive (+) lead from the battery to
terminal 5 and negative (-) lead to terminal 4, then
check that the lever turns to "HOT" side smoothly.
NOTICE:
While using the battery during inspection, do
not bring the positive and negative tester
probes too close to each other as a short circuit
may occur.
If the operation is not as specified, replace the air
mix control servo motor.
E109236E09

AIR CONDITIONING – AIR MIX CONTROL SERVO MOTOR (for Rear Air Conditioning Sys-
tem)AC–219
AC
AIR MIX CONTROL SERVO
MOTOR (for Rear Air Conditioning
System)
ON-VEHICLE INSPECTION
1. INSPECT REAR AIR MIX CONTROL SERVO MOTOR
(a) Inspect servo motor operation.
(1) Connect the positive (+) lead from the battery
to terminal 4 and negative (-) lead to terminal 5,
then check that the arm turns to "HOT" side
smoothly.
(2) Connect the positive (+) lead from the battery
to terminal 5 and negative (-) lead to terminal 4,
then check that the arm turns to "COOL" side
smoothly.
If the operations are not as specified, replace
the rear radiator unit sub-assembly (rear air mix
control servo motor).
E145192E03

AC–220AIR CONDITIONING – REAR BLOWER RESISTOR
AC
REAR BLOWER RESISTOR
ON-VEHICLE INSPECTION
1. INSPECT REAR BLOWER MOTOR CONTROLLER
(a) Measure resistance according to the value(s) in the
table below..
Standard resistance
If the resistance is not as specified, replace the rear
blower motor controller.
(b) Inspect the rear blower motor controller.
(1) Connect the positive (+) lead to terminal 3
through a 12 V to 3.4 W test bulb and negative
(-) lead to terminal 1.
(2) Connect the three 1.5 V dry cell batteries'
positive (+) lead to terminal 2, and the negative
(-) lead to terminal 1. Then check that the test
bulb comes on.
OK:
The test bulb comes on.
If operation is not as specified, replace the rear
blower motor controller.
E032877Tester Connection Condition Specified Condition
3 - 4 Always 2.0 to 2.4 k
E147379E02

AIR CONDITIONING – COMPRESSOR AND MAGNETIC CLUTCHAC–227
AC
REMOVAL
1. RECOVER REFRIGERANT FROM REFRIGERATION
SYSTEM (See page AC-172)
2. REMOVE FRONT WHEEL RH
3. REMOVE FRONT FENDER APRON SEAL RH (See
page EM-26)
4. REMOVE V-RIBBED BELT (See page EM-6)
5. REMOVE RADIATOR AND FAN ASSEMBLY
(See page CO-28)
6. DISCONNECT DISCHARGE HOSE SUB-ASSEMBLY
(a) Remove the bolt and disconnect the discharge hose
sub-assembly from the compressor and magnetic
clutch.
(b) Remove the O-ring from the discharge hose sub-
assembly.
NOTICE:
Seal the openings of the disconnected parts
using vinyl tape to prevent entry of moisture and
foreign matter.
7. DISCONNECT SUCTION HOSE SUB-ASSEMBLY
(a) Remove the bolt and disconnect the suction hose
sub-assembly from the compressor and magnetic
clutch.
(b) Remove the O-ring from the suction hose sub-
assembly.
NOTICE:
Seal the openings of the disconnected parts
using vinyl tape to prevent entry of moisture and
foreign matter.
8. REMOVE COMPRESSOR AND MAGNETIC CLUTCH
(a) Disconnect the connector.
(b) Release the 2 clamps and wire harness.
(c) Remove the 2 bolts and 2 nuts.
E145264
E145265
E145255

AC–228AIR CONDITIONING – COMPRESSOR AND MAGNETIC CLUTCH
AC
(d) Using a "TORX" socket wrench (E8), remove the 2
stud bolts and the compressor and magnetic clutch.
E145254

AIR CONDITIONING – COMPRESSOR AND MAGNETIC CLUTCHAC–229
AC
DISASSEMBLY
1. REMOVE MAGNETIC CLUTCH ASSEMBLY
(a) Place the compressor and magnetic clutch in a vise.
(b) Using locking pliers, hold the magnetic clutch hub.
(c) Remove the bolt, magnetic clutch hub, and
magnetic clutch washers.
HINT:
There is no set number of magnetic clutch washers
because they are used for adjustment.
(d) Using a snap ring expander, remove the snap ring
and magnetic clutch rotor.
NOTICE:
Take care not to damage the seal cover of the
bearing when removing the snap ring.
(e) Remove the screw and disconnect the connector.
(f) Using a snap ring expander, remove the snap ring
and magnetic clutch stator.
INSPECTION
1. INSPECT MAGNETIC CLUTCH CLEARANCE
(a) Set the dial indicator to the magnetic clutch hub.
(b) Connect the battery positive lead to the terminal 1 of
the magnet clutch connector and the negative lead
to the earth wire. Turn on and off the magnetic
clutch and measure the clearance.
Standard clearance:
0.35 to 0.60 mm (0.013 to 0.023 in.)
If the measured value is not within the standard
range, remove the magnetic clutch hub and adjust it
with the magnetic clutch washers.
NOTICE:
Adjustment can be performed with 3 or less
magnetic clutch washers.
E145256
E145258
E145259
E145263

AC–230AIR CONDITIONING – COMPRESSOR AND MAGNETIC CLUTCH
AC
2. INSPECT COMPRESSOR OIL
(a) When replacing the compressor and magnetic
clutch with a new one, after gradually removing the
refrigerant gas from the service valve, drain the
following amount of oil from the new compressor
and magnetic clutch before installation.
Standard:
(Oil capacity inside new compressor and
magnetic clutch:
225 + 15 cc (7.6 + 0.5 fl.oz.)) - (Remaining oil
amount in the removed compressor and
magnetic clutch) = (Oil amount to be
removed when replacing)
NOTICE:
• When checking the compressor oil level,
observe the precautions on the cooler
removal / installation.
• Because compressor oil remains in the pipes
of the vehicle, if a new compressor and
magnetic clutch is installed without removing
some oil inside, the oil amount becomes
excessive, preventing heat exchange in the
refrigerant cycle and causing refrigerant
failure.
• If the remaining oil in the removed
compressor and magnetic clutch is too small
in volume, check for oil leakage.
• Be sure to use ND-OIL 8 for compressor oil.
3. INSPECT COMPRESSOR AND MAGNETIC CLUTCH
(a) Disconnect the connector from the compressor and
magnetic clutch.
E145186E03