2007 TOYOTA SIENNA ECO mode

BC–34BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
BC
NG
OK
(a) Install the ABS 1 fuse.
(b) Disconnect the skid control ECU connector.
(c) Measure the voltage according to the value(s) in the
table below.
Standard voltage
NG
OK
(a) Measure the resistance according to the value(s) in the
table below.
Standard resistance
NG
OK
(a) Reconnect the skid control ECU connector.
(b) Connect the intelligent tester to the DLC3.
(c) Turn the ignition switch to the ON position and turn the
intelligent tester main switch on.
(d) Start the engine.
(e) Select the ACTIVE TEST mode on the intelligent tester.
ABS:REPLACE FUSE (ABS 1 FUSE)
2INSPECT SKID CONTROL ECU (+BM TERMINAL VOLTAGE)
C113872E02
Tester Connection Condition Specified Condition
S3-24 (+BM) - Body
groundAlways 10 to 14 V
REPAIR OR REPLACE HARNESS OR
CONNECTOR (+BM CIRCUIT)
3INSPECT SKID CONTROL ECU (GND TERMINAL CONTINUITY)
C058919E22
Tester Connection Specified Condition
S3-1 (GND1) - Body ground Below 1
S3-23 (GND2) - Body ground Below 1
REPAIR OR REPLACE HARNESS OR
CONNECTOR (GND CIRCUIT)
4PERFORM ACTIVE TEST BY INTELLIGENT TESTER (ABS MOTOR RELAY)
Item (Display) Vehicle Condition / Test Details Diagnostic Note
ABS MOT RELAY Turns ABS motor relay ON / OFF Operating sound of motor is heard

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

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

AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–25
AC
(b) As each damper, motor and relay automatically
operate actuator check at 1-second intervals from
step No. 1 to No. 10 continuously, check the
temperature and air flow visually and by hand.
If the slower display is desired, press the DEF
switch and change it to step operation. Each time
the DEF switch is pressed, the display changes by 1
step.
HINT:
• Codes are displayed from smaller to larger
numbers in order.
• To cancel the check mode, press the OFF switch.
Step No.Display
codeConditions
Fr. Blower
levelFr. Air flow
ventAir inlet
damperMagnetic
clutchFr. Driver,
passenger
side air
mix
damperRr. Blower
levelRr. Air flow
ventRr. Air mix
damper
1 0 0 FACE FRESH OFF"COOL"
side
(Full
closed)0 FACE1"COOL"
side
(Full
closed)
2 1 1 FACE FRESH OFF"COOL"
side
(Full
closed)1 FACE1"COOL"
side
(Full
closed)
3 2 16 FACE FRESH ON"COOL"
side
(Full
closed)10 FACE1"COOL" /
"HOT"
(40% open)
4316FACEFRESH /
RECIRCUL
AT I O NON"COOL"
side
(Full
closed)10 FACE2"COOL" /
"HOT"
(40% open)
5416FACERECIRCUL
AT I O NON"COOL" /
"HOT"
(50% open)10 B/L"COOL" /
"HOT"
(40% open)
6516B/LRECIRCUL
AT I O NON"COOL" /
"HOT"
(50% open)10 B/L"COOL" /
"HOT"
(60% open)
7616FOOTRECIRCUL
AT I O NON"HOT" side
(Full open)10 B/L"COOL" /
"HOT"
(60% open)
8716FOOTRECIRCUL
AT I O NON
"HOT" side
(Full open)10 FOOT"COOL" /
"HOT"
(60% open)
9816FOOT /
DEF.RECIRCUL
AT I O NON"HOT" side
(Full open)10 FOOT"COOL" /
"HOT"
(86.5%
open)
10931DEF.RECIRCUL
AT I O NON"HOT" side
(Full open)31 FOOT"COOL" /
"HOT"
(86.5%
open)

AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–15
AC
NOTICE:
*: Before measuring the resistance, leave the
vehicle as is for at least 1 minute and do not
operate the ignition switch, any other switches
or the doors.
DTC CHECK / CLEAR
1. DTC CHECK (SENSOR CHECK)
(a) After the indicator check is completed, the system
enters the DTC check mode automatically.
(b) Read the codes displayed on the panel. Refer to the
list of codes (See page AC-19) when reading the
codes. (Trouble codes are output at the temperature
display.)
(c) If the slower display is desired, press the DEF
switch and change it to the step operation. Each
time the DEF switch is pressed, the display changes
by 1 step.
2. CLEARING DTC
(a) To clear diagnostic trouble codes, there are 2 ways.
(1) During sensor check, press the "DEF" switch
and "A/C" switch at the same time.
(2) Remove the ECU-B fuse in the engine room
junction block for 20 seconds or longer to clear
the DTC memory.
I035391E01
I035391E02
I035414E02

AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–25
AC
(b) As each damper, motor and relay automatically
operate actuator check at 1-second intervals from
step No. 1 to No. 10 continuously, check the
temperature and air flow visually and by hand.
If the slower display is desired, press the DEF
switch and change it to step operation. Each time
the DEF switch is pressed, the display changes by 1
step.
HINT:
• Codes are displayed from smaller to larger
numbers in order.
• To cancel the check mode, press the OFF switch.
Step No.Display
codeConditions
Fr. Blower
levelFr. Air flow
ventAir inlet
damperMagnetic
clutchFr. Driver,
passenger
side air
mix
damperRr. Blower
levelRr. Air flow
ventRr. Air mix
damper
1 0 0 FACE FRESH OFF"COOL"
side
(Full
closed)0 FACE1"COOL"
side
(Full
closed)
2 1 1 FACE FRESH OFF"COOL"
side
(Full
closed)1 FACE1"COOL"
side
(Full
closed)
3 2 16 FACE FRESH ON"COOL"
side
(Full
closed)10 FACE1"COOL" /
"HOT"
(40% open)
4316FACEFRESH /
RECIRCUL
AT I O NON"COOL"
side
(Full
closed)10 FACE2"COOL" /
"HOT"
(40% open)
5416FACERECIRCUL
AT I O NON"COOL" /
"HOT"
(50% open)10 B/L"COOL" /
"HOT"
(40% open)
6516B/LRECIRCUL
AT I O NON"COOL" /
"HOT"
(50% open)10 B/L"COOL" /
"HOT"
(60% open)
7616FOOTRECIRCUL
AT I O NON"HOT" side
(Full open)10 B/L"COOL" /
"HOT"
(60% open)
8716FOOTRECIRCUL
AT I O NON
"HOT" side
(Full open)10 FOOT"COOL" /
"HOT"
(60% open)
9816FOOT /
DEF.RECIRCUL
AT I O NON"HOT" side
(Full open)10 FOOT"COOL" /
"HOT"
(86.5%
open)
10931DEF.RECIRCUL
AT I O NON"HOT" side
(Full open)31 FOOT"COOL" /
"HOT"
(86.5%
open)