2007 TOYOTA SIENNA Service Repair Manual

light overheating maintenance reset seat adjustment deactivate airbag AUX

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Page 2753 of 3000

TOYOTA SIENNA 2007 Service Repair Manual PS–42POWER STEERING – RACK AND PINION POWER STEERING GEAR
PS
16. INSPECT AND ADJUST FRONT WHEEL ALIGNMENT
HINT:
(See page SP-4)

Page 2754 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AC–6AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)
AC
HOW TO PROCEED WITH
TROUBLESHOOTING
NEXT
(a) Confirm problem symptoms.
NEXT
NEXT
NEXT
NEXT
1VEHICLE B

Page 2755 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–7
AC
NEXT
NEXT
NEXT
NEXT
NEXT
9TERMINALS OF ECU
10CIRCUIT INSPECTION
11IDENTIFICATION OF PROBLEM
12REPAIR O

Page 2756 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AC–8AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)
AC
PROBLEM SYMPTOMS TABLE
Front A/C:
Symptom Suspected Area See page
Whole functions of the A/C system do

AC–8AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)
AC
PROBLEM SYMPTOMS TABLE
Front A/C:
Symptom Suspected Area See page
Whole functions of the A/C system do not operateIG power source circuitAC-149
ACC power source circuitAC-152
A/C amplifierAC-253
Air Flow Control: No blower operationBlower motor circuitAC-127
A/C amplifierAC-253
Air Flow Control: No blower control Blower motor circuitAC-127
Air Flow Control: Insufficient air outBlower motor circuitAC-127
A/C amplifierAC-253
Temperature Control: Cool air does not come outVolume of refrigerantAC-168
Drive belt tension -
Refrigerant pressureAC-168
Compressor circuitAC-134
Pressure sensor circuitAC-51
Air mix control servo motor circuit (Passenger side)AC-93
Air mix control servo motor circuit (Driver side)AC-108
Air mix damper position sensor circuit (Passenger side)AC-69
Air mix damper position sensor circuit (Driver side)AC-81
Room temperature sensor circuitAC-25
Ambient temperature sensor circuitAC-28
A/C amplifierAC-253
Multiplex communication circuit (CAN)CA-7
Multiplex communication circuit (BEAN)MP-4
Temperature Control: Warm air does not come outAir mix control servo motor circuit (Passenger side)AC-93
Air mix control servo motor circuit (Driver side)AC-108
Air mix damper position sensor circuit (Passenger side)AC-69
Air mix damper position sensor circuit (Driver side)AC-81
Ambient temperature sensor circuitAC-28
Room temperature sensor circuitAC-25
Evaporator temperature sensor circuitAC-32
A/C amplifierAC-253
Heater radiatorAC-187
Multiplex communication circuit (CAN)CA-7
Multiplex communication circuit (BEAN)MP-4
Temperature Control: Output air is warmer or cooler
than the set temperature or response is slowRoom temperature sensor circuitAC-25
Ambient temperature sensor circuitAC-28
Solar sensor circuit (Passenger side)AC-42
Solar sensor circuit (Driver side)AC-64
Air mix damper position sensor circuit (Passenger side)AC-69
Air mix damper position sensor circuit (Driver side)AC-81
Air mix control servo motor circuit (Passenger side)AC-93
Air mix control servo motor circuit (Driver side)AC-108
A/C amplifierAC-253
Temperature Control: No temperature control (only
Max. cool or Max. warm)Air mix control servo motor circuit (Passenger side)AC-93
Air mix control servo motor circuit (Driver side)AC-108
Air mix damper position sensor circuit (Passenger side)
AC-69
Air mix damper position sensor circuit (Driver side)AC-81
A/C amplifierAC-253

Page 2757 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–9
AC
Rear A/C:
No air inlet controlAir inlet damper control servo motor circuitAC-98
Air inlet damper posit

AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–9
AC
Rear A/C:
No air inlet controlAir inlet damper control servo motor circuitAC-98
Air inlet damper position sensor circuitAC-73
A/C amplifierAC-253
No air outlet controlAir outlet damper position sensor circuitAC-77
Air outlet control servo motor circuitAC-103
A/C amplifierAC-253
Engine idle up does not occur, or is continuousCompressor circuitAC-134
A/C amplifierAC-253
Displayed set temperature value does not match up
with operation of temperature control switchA/C amplifierAC-253
Brightness does not change when rheostat volume or
light control switch is turnedA/C amplifierAC-253
Unable to access the diagnosis mode A/C amplifierAC-253
DTC is not recorded. Set mode is cleared when IG
switch is turned offBack-up power source circuitAC-154
A/C amplifierAC-253
Symptom Suspected Area See page
Whole functions of the A/C system do not operateA/C amplifierAC-253
Rear air conditioning relay circuitAC-142
Rear air conditioning control panel circuitAC-139
Air Flow Control: No blower operationRear blower motor circuitAC-144
A/C amplifierAC-253
Air Flow Control: No blower controlRear blower motor circuitAC-144
A/C amplifierAC-253
Air Flow Control: Insufficient air outRear blower motor circuitAC-144
A/C amplifierAC-253
Temperature Control: Cool air does not come outVolume of refrigerantAC-168
Drive belt tension -
Refrigerant pressureAC-168
Compressor circuitAC-134
Pressure sensor circuitAC-51
Ambient temperature sensor circuitAC-28
Rear evaporator temperature sensor circuitAC-35
A/C amplifierAC-253
Temperature Control: Warm air does not come outRear air mix control servo motor circuitAC-113
Rear air mix damper position sensor circuitAC-85
Ambient temperature sensor circuitAC-28
Rear room temperature sensor circuitAC-39
Rear evaporator temperature sensor circuitAC-35
A/C amplifierAC-253
Heater radiatorAC-187
Temperature Control: Output air is warmer or cooler
than the set temperature or response is slowRear room temperature sensor circuitAC-39
Ambient temperature sensor circuitAC-28
Rear air mix damper position sensor circuitAC-85
Rear air mix control servo motor circuitAC-113
A/C amplifierAC-253
Temperature Control: No temperature control (only
Max. cool or Max. hot)Rear air mix control servo motor circuitAC-113
Rear air mix damper position sensor circuitAC-85
A/C amplifierAC-253 Symptom Suspected Area See page

Page 2758 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AC–10AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)
AC
No air outlet controlRear air outlet damper position sensor circuitAC-89
Rear air outlet control serv

Page 2759 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AC–40AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)
AC
DESCRIPTION
This sensor detects the rear cabin temperature that is used as the basis for temperature

Page 2760 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–41
AC
(c) Select the item below in the DATA LIST, and read the
display on the intelligent tester.
DATA LIS

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