sensor TOYOTA SIENNA 2007 Service Repair Manual

AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–119
AC
DESCRIPTION
This circuit turns the servo motor and changes each damper position by receiving the signals from the A/
C amplifier.
The rear air outlet damper servo motor switches the air outlet mode by rotating (normal, reverse) with
electrical power from the A/C amplifier.
WIRING DIAGRAM
INSPECTION PROCEDURE
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position and turn the
intelligent tester main switch on.
DTC B1449/49Rear Air Outlet Damper Control Servo Motor
Circuit
DTC No. DTC Detection Condition Trouble Area
B1449/49Rear air outlet damper position sensor value does not
change even if A/C amplifier operates rear air outlet
control servo motor.• Rear air outlet control servo motor
• Harness or connector between rear air outlet
control servo motor and A/C amplifier
• A/C amplifier
1READ VALUE OF INTELLIGENT TESTER
I036322E25

AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–11
AC
TERMINALS OF ECU
1. A/C AMPLIFIER
Terminal No. (Symbols) Wiring Color Terminal Description ConditionSpecified Condition
A9-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 V
A9-2 (MPX+) - A9-1
(GND)V - W-BMultiplex communication
signalIG SW: ON Pulse generation
A9-3 (MPX-) - A9-1 (GND) R-L - W-BMultiplex communication
signalIG SW: ON Pulse generation
A9-4 (SOL+) - A9-1 (GND) L - W-BA/C compressor operation
signalEngine is running
A/C switch: ON
Blower switch: LOPulse generation
(See waveform 2)
A9-5 (MGC) - A9-1 (GND) R-L - W-BA/C compressor magnetic
clutch operation signalIG SW: ON
Blower switch: LO
A/C switch: OFF
ON10 to 14 V Below 1 V
A9-6 (BLW) - A9-1 (GND) Y-P - W-BBlower motor speed
control signalIG SW: ON
Front blower: OperatePulse generation
(See waveform 1)
A9-8 (HRH) - A9-1 (GND) R-G - W-BRear A/C relay operation
signalIG SW: ON
Rear blower: OFF
ON10 to 14 V Below 1 V
A9-9 (LOCK) - A9-1
(GND)W-L - W-BA/C compressor lock
sensor signalEngine is running
Blower switch: LO
A/C switch: ONPulse generation
(See waveform 3)
A9-10 (S5-5) - A9-24 (SG-
6)P - W-GPower supply for A/C
pressure sensorIG SW: OFF
ON
A/C switch: ONBelow 1 V 4.5 to 5.5 V
A9-11 (TSP) - Body
groundY-B - Body groundA/C solar sensor signal
(Passenger side)IG SW: ON
Solar sensor subject to electric
light0.8 to 4.3 V
A9-12 (AMDH) - A9-1
(GND)L-Y - W-BAir mix control servo motor
signal (Driver side)IG SW: ON
Driver side set temp.: MAX.
COOL
MAX. HOTBelow 1 V
10 to 14 V
A9-13 (AMDC) - A9-1
(GND)L - W-BAir mix control servo motor
signal (Driver side)IG SW: ON
Driver side set temp.: MAX.
HOT
MAX. COOLBelow 1 V 10 to 14 V
A9-14 (AMPH) - A9-1
(GND)L-B - W-BAir mix control servo motor
signal (Front passenger
side)IG SW: ON
Passenger side set temp.: MAX.
COOL
MAX. HOTBelow 1 V
10 to 14 V
A9-15 (AMPC) - A9-1
(GND)L-W - W-BAir mix control servo motor
signal (Front passenger
side)IG SW: ON
Passenger side set temp.: MAX.
HOT
MAX. COOLBelow 1 V
10 to 14 V
A9-16 (AIF) - A9-1 (GND) BR-W - W-BAir inlet control servo
motor signalIG SW: ON
R/F SW: RECIRCULATION

FRESHBelow 1 V 10 to 14 V
A9-17 (AIR) - A9-1 (GND) R - W-BAir inlet control servo
motor signalIG SW: ON
R/F SW: FRESH

RECIRCULATIONBelow 1 V 10 to 14 V
A9-18 (IG) - A9-1 (GND) R-Y - W-B Power source (IG) IG SW: LOCK
ON Below 1 V 10 to 14 V
A9-19 (ACC) - A9-1 (GND) P - W-B Accessory (ON) IG SW: ACC 10 to 14 V
A9-20 (B) - A9-1 (GND) W-L - W-B Power source (Back-up) Always 10 to 14 V
E145189E01

AC–12AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)
AC
A9-21 (SG-1) - A9-1
(GND)GR-L - W-B Signal ground Always Below 1 V
A9-22 (SG-4) - A9-1
(GND)Y - W-B Signal ground Always Below 1 V
A9-23 (SG-5) - A9-1
(GND)W-R - W-B Signal ground Always Below 1 V
A9-24 (SG-6) - A9-1
(GND)W-G - W-B Signal ground Always Below 1 V
A9-26 (TPD) - A9-21 (SG-
1)GR-B - GR-LAir mix control servo motor
position signal (for driver
side)IG SW: ON
Driver side set temp. MAX. HOT
MAX. COOL1.0 4.0 V
A9-27 (TPP) - A9-21 (SG-
1)L-R - GR-LAir mix control servo motor
position signal (for front
passenger side)IG SW: ON
Passenger side set temp. MAX.
HOT
MAX. COOL1.0
4.0 V
A9-28 (TPI) - A9-21 (SG-
1)GR - GR-LAir inlet control servo
motor position signalIG SW: ON
Front R/F switch FRESH

RECIRCULATION1.0 4.0 V
A9-29 (TPO) - A9-21 (SG-
1)LG - GR-LAir outlet control servo
motor position signalIG SW: ON
Front mode switch: FOOT

DEF.1.0 4.0 V
A9-30 (S5-1) - A9-21 (SG-
1)P-L - GR-LPower source for servo
motor position sensorsIG SW: LOCK
ON Below 1 V 5.0 V
A9-31 (TSD) - Body
groundY- R - B o d y g r o u n dA/C solar sensor signal
(Driver side)IG SW: ON
Solar sensor subject to electric
light0.8 to 4.3 V
A9-32 (TAM) - A9-1 (GND) B-R - W-BA/C ambient temperature
sensor signalIgnition switch ON at 25
C
(77F)1.35 to 1.75 V
A9-33 (TR) - A9-23 (SG-5) G-W - W-RA/C room temperature
sensor signalIG SW: ON
Front cabin temp.: 25
C (77F)
40C (104F)1.8 to 2.2 V
1.2 to 1.6 V
A9-34 (TE) - A9-22 (SG-4) G-B - YFront A/C evaporator
temperature sensor signalFront evaporator temp.: 0
C
(32
F) 15C (59F)2.0 to 2.4 V 1.4 to 1.8 V
A9-35 (PRE) - A9-24 (SG-
6)V - W-GA/C pressure sensor
signalStart engine, Operate A/C
system, Refrigerant pressure:
Abnormal pressure (more than
3140 kPa (32.0 kgf/cm
2, 455
psi))4.74 V or higher
A9-35 (PRE) - A9-24 (SG-
6)V - W-GA/C pressure sensor
signalStart engine, Operate A/C
system, Refrigerant pressure:
Abnormal pressure (less than
196 kPa (2.0 kgf/cm
2, 28 psi))Below 0.76 V
A9-35 (PRE) - A9-24 (SG-
6)V - W-GA/C pressure sensor
signalStart engine, Operate A/C
system, Refrigerant pressure:
Abnormal pressure (more than
3140 kPa (32.0 kgf/cm
2, 455
psi) and less than 196 kPa (2.0
kgf/cm
2, 28 psi))0.76 to 4.74 V
A9-37 (ILL-) - A9-1 (GND) W-R - W-BIllumination signal
(Rheostat)Illumination light Max. Position Below 1 V
A9-38 (ILL+) - A9-1 (GND) G - W-B Illumination signalLight control switch TAIL or
HEAD10 to 14 V
A9-39 (AOD) - A9-1
(GND)G-O - W-BAir outlet control servo
motor drive signalIG SW: ON
Front mode switch: FOOT

DEF.Below 1 V 10 to 14 V
A9-40 (AOF) - A9-1 (GND) O - W-BAir outlet control servo
motor drive signalIG SW: ON
Front mode switch: DEF.

FOOTBelow 1 V 10 to 14 V
A10-1 (FOOT) - A9-1
(GND)G-Y - W-BRear air outlet control
servo motor signalIG SW: ON
Rear mode switch: FACE

FOOTBelow 1 V 10 to 14 V Terminal No. (Symbols) Wiring Color Terminal Description ConditionSpecified Condition

AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–13
AC
(a) Waveform 1:
A10-2 (FACE) - A9-1
(GND)LG-B - W-BRear air outlet control
servo motor signalIG SW: ON
Rear mode switch: FOOT
FA C EBelow 1 V 10 to 14 V
A10-3 (MHH) - A9-1
(GND)V-Y - W-BRear air mix control servo
motor signalIG SW: ON
Rear set temp.: MAX. COOL

MAX. HOTBelow 1 V 10 to 14 V
A10-4 (MCH) - A9-1
(GND)GR-L - W-BRear air mix control servo
motor signalIG SW: ON
Rear set temp.: MAX. HOT

MAX. COOLBelow 1 V 10 to 14 V
A10-5 (BLWH) - A9-1
(GND)L-W - W-BRear blower motor control
signalIG SW: ON
Rear A/C blower: Operate1.7 to 2.0 V
A10-6 (VMH) - A9-1
(GND)P-B - W-BRear blower motor control
signalIG SW: ON
Rear A/C blower: Operate0 to 9 V
A10-7 (SWD) - A9-1
(GND)B - W-BCommunication signal (for
Rear A/C control)Rear A/C operated Pulse generation
A10-8 (DPD) - A9-1 (GND) W - W-BCommunication signal (for
Rear A/C control)Rear A/C operated Pulse generation
A10-9 (CLKR) - A9-1
(GND)V-R - W- BCommunication signal (for
Rear A/C control)Rear A/C operated Pulse generation
A10-10 (STX) - A9-1
(GND)B-O - W-BCommunication signal (for
Rear A/C control)Rear A/C operated Pulse generation
A10-11 (BLK) - A9-1
(GND)R-G - W-BCommunication signal (for
Rear A/C control)Rear A/C operated Pulse generation
A10-12 (S5) - A10-13 (SG) P-L - W-RPower source for rear air
outlet control servo motor
position sensorIG SW: LOCK
ON Below 1 V 5.0 V
A10-13 (SG) - A9-1 (GND) W-R - W-B Signal ground Always Below 1 V
A10-14 (SGND) - A9-1
(GND)BR-R - W-B Signal ground Always Below 1 V
A10-16 (RDSW) - A9-1
(GND)Y-G - W-B DEF relay signalIG SW: ON
RDEF SW: OFF
ON11 to 14 V Below 1 V
A10-17 (TEC) - A10-13
(SG)P-G - W-RRear evaporator
temperature sensor signalRear evaporator temp.: 0
C
(32
F) 15C (59F)2.0 to 2.4 V 1.4 to 1.8 V
A10-18 (TR) - A10-14
(SGND)G-R - BR-RRear room temperature
sensor signalIG SW: ON
Rear cabin temp.: 25
C (77F)
15C (59F)1.8 to 2.2 V
1.2 to 1.6 V
A10-20 (TPM) - A10-13
(SG)G - W-RRear air outlet control
servo motor position
signalIG SW: ON
Rear mode switch: FOOT

FA C E1.0 4.0 V
A10-21 (TPH) - A10-13
(SG)B - W-RRear air mix control servo
motor position signalIG SW: ON
Rear set temp. MAX. HOT

MAX. COOL1.0 4.0 V Terminal No. (Symbols) Wiring Color Terminal Description ConditionSpecified Condition
E103396E01
Item Contents
Terminal No. (Symbols) A9-6 (BLW) - A9-1 (GND)
Tool Setting 1 V/DIV., 500
s/DIV.
Vehicle ConditionIG SW: ON
Blower switch: ON

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

AC–164AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Manual Air Conditioning System)
AC
TERMINALS OF ECU
1. A/C AMPLIFIER
HINT:
Check from the rear of the connector while it is
connected to the A/C amplifier.
E145189E02
Terminal No.
(Symbols)Wiring Color Description Condition Specified Condition
A9-1 (S5) - A9-26 (SG) BR-R - LG-RPower supply for air mix
control damper position
sensorIgnition switch: ON 4.5 to 5.5 V
A9-3 (TE) - A9-7 (SG-4) G-B - YA/C evaporator
temperature sensor signalIgnition switch: ON
Evaporator temperature:
0
C (32F)2.0 to 2.4 V
A9-3 (TE) - A9-7 (SG-4) G-B - YA/C evaporator
temperature sensor signalIgnition switch: ON
Evaporator temperature:
15
C (59F)1.4 to 1.8 V
A9-4 (MPX+) - Body
groundV - Body groundMultiplex communication
systemMultiplex communication
circuitPulse generation
A9-5 (MPX-) - Body
groundR-L - Body groundMultiplex communication
systemMultiplex communication
circuitPulse generation
A9-6 (GND) - Body ground W-B - Body groundGround for main power
supplyAlways Below 1 V
A9-7 (SG-4) - Body
groundY - Body groundGround for A/C evaporator
temperature sensorAlways Below 1 V
A9-8 (FTIN) - A9-6 (GND) B-O - W-BMode control switch
operation signalIgnition switch: ON
Rear mode control switch
(FOOT): OFF4.5 to 5.5 V
A9-8 (FTIN) - A9-6 (GND) B-O - W-BMode control switch
operation signalIgnition switch: ON
Rear mode control switch
(FOOT): ONBelow 1 V
A9-9 (BLIN) - A9-6 (GND) W - W-BMode control switch
operation signalIgnition switch: ON
Rear mode control switch
(B/L): OFF4.5 to 5.5 V
A9-9 (BLIN) - A9-6 (GND) W - W-BMode control switch
operation signalIgnition switch: ON
Rear mode control switch
(B/L): ONBelow 1 V
A9-10 (FCIN) - A9-6
(GND)BR-B - W-BMode control switch
operation signalIgnition switch: ON
Rear mode control switch
(FACE): OFF4.5 to 5.5 V
A9-10 (FCIN) - A9-6
(GND)BR-B - W-BMode control switch
operation signalIgnition switch: ON
Rear mode control switch
(FACE): ONBelow 1 V
A9-11 (RDSW) - A9-6
(GND)Y- G - W - BRear defogger operation
signalIgnition switch: ON
REAR DEF switch: OFF4.5 to 5.5 V
A9-11 (RDSW) - A9-6
(GND)Y- G - W - BRear defogger operation
signalIgnition switch: ON
REAR DEF switch: ONBelow 1 V

AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Manual Air Conditioning System)AC–165
AC
A9-12 (SOL+) - A9-6
(GND)W-L - W-BA/C compressor operation
signalEngine is runningA/C
switch: ON
Front blower control dial:
LOPulse generation
(See waveform 1)
A9-13 (AOD) - A9-6
(GND)G-O - W-BAir outlet control servo
motor operation signalIgnition switch: ON
Front mode control dial:
FOOTBelow 1 V
A9-13 (AOD) - A9-6
(GND)G-O - W-BAir outlet control servo
motor operation signalIgnition switch: ON
Front mode control dial:
DEF11 to 14 V
A9-14 (AOF) - A9-6 (GND) L-O - W-BAir outlet control servo
motor operation signalIgnition switch: ON
Front mode control dial:
DEFBelow 1 V
A9-14 (AOF) - A9-6 (GND) L-O - W-BAir outlet control servo
motor operation signalIgnition switch: ON
Front mode control dial:
FOOT11 to 14 V
A9-15 (FOOT) - A9-6
(GND)G-Y - W-BRear air outlet control
servo motor operation
signalIgnition switch: ON
Rear mode control switch
(FOOT): OFFBelow 1 V
A9-15 (FOOT) - A9-6
(GND)G-Y - W-BRear air outlet control
servo motor operation
signalIgnition switch: ON
Rear mode control switch
(FOOT): ON11 to 14 V
A9-16 (FACE) - A9-6
(GND)LG-B - W-BRear air outlet control
servo motor operation
signalIgnition switch: ON
Rear mode control switch
(FACE): OFFBelow 1 V
A9-16 (FACE) - A9-6
(GND)LG-B - W-BRear air outlet control
servo motor operation
signalIgnition switch: ON
Rear mode control switch
(FACE): ON11 t o 1 4 V
A9-17 (+B) - A9-6 (GND) W-L - W-B Power source (Battery) Always 11 to 14 V
A9-18 (IG) - A9-6 (GND) R-Y - W-B Power source (IG) Ignition switch: OFF Below 1 V
A9-18 (IG) - A9-6 (GND) R-Y - W-B Power source (IG) Ignition switch: ON 11 to 14 V
A9-19 (MHH) - A9-6
(GND)V- Y - W- BRear air mix control servo
motor operation signalIgnition switch: ON
Rear temperature control
dial: MAX COLDBelow 1 V
A9-19 (MHH) - A9-6
(GND)V- Y - W- BRear air mix control servo
motor operation signalIgnition switch: ON
Rear temperature control
dial: MAX HOT11 t o 1 4 V
A9-20 (MCH) - A9-6
(GND)GR-L - W-BRear air mix control servo
motor operation signalIgnition switch: ON
Rear temperature control
dial: MAX HOTBelow 1 V
A9-20 (MCH) - A9-6
(GND)GR-L - W-BRear air mix control servo
motor operation signalIgnition switch: ON
Rear temperature control
dial: MAX COLD11 to 14 V
A9-21 (S5) - A9-6 (GND) B-W - W-BPower supply for mode
control switchIgnition switch: ON 4.5 to 5.5 V
A9-22 (S5-1) - A9-27 (SG-
1)P-L - GR-LPower supply for air outlet
control damper position
sensorIgnition switch: ON 4.5 to 5.5 V
A9-23 (S5) - A9-6 (GND) P-L - W-BPower supply for rear air
outlet control damper
position sensorIgnition switch: ON 4.5 to 5.5 V
A9-24 (TSET) - A9-6
(GND)R-G - W-BRear temperature control
dial operation signalIgnition switch: ON
Rear temperature control
dial: ON0 to 5 V
A9-25 (BSET) - A9-6
(GND)GR-G - W-BRear blower control dial
operation signalIgnition switch: ON
Rear blower control dial:
ON0 to 5 V
A9-26 (SG) - Body ground LG-R - Body groundGround for air mix control
damper position sensorAlways Below 1 V Terminal No.
(Symbols)Wiring Color Description Condition Specified Condition

AC–166AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Manual Air Conditioning System)
AC
A9-27 (SG-1) - Body
groundGR-L - Body groundGround for air outlet
control damper position
sensorAlways Below 1 V
A9-28 (SG) - Body ground V-W - Body groundGround for rear A/C
control assemblyAlways Below 1 V
A9-29 (SG) - Body ground W-R - Body groundGround for rear air outlet
control damper position
sensorAlways Below 1 V
A9-30 (SG-6) - Body
groundW-G - Body groundGround for A/C lock
sensor, A/C pressure
sensor and A/C ambient
temperature sensorAlways Below 1 V
A9-35 (THOT) - A9-6
(GND)L-B - W-BAir mix control servo motor
operation signalIgnition switch: ON
Front temperature control
dial: MAX. COLDBelow 1 V
A9-35 (THOT) - A9-6
(GND)L-B - W-BAir mix control servo motor
operation signalIgnition switch: ON
Front temperature control
dial: MAX. HOT11 to 14 V
A9-36 (TCOL) - A9-6
(GND)P-G - W-BAir mix control servo motor
operation signalIgnition switch: ON
Front temperature control
dial: MAX. HOTBelow 1 V
A9-36 (TCOL) - A9-6
(GND)P-G - W-BAir mix control servo motor
operation signalIgnition switch: ON
Front temperature control
dial: MAX. COLD11 to 14 V
A9-38 (A/CB) - A9-6
(GND)B - W-B Power source (Battery)Ignition switch: ON
Front blower control dial:
OFFBelow 1 V
A9-38 (A/CB) - A9-6
(GND)B - W-B Power source (Battery)Ignition switch: ON
Front blower control dial:
ON11 to 14 V
A9-40 (ACC) - A9-6 (GND) P - W-B Power source (ACC) Ignition switch: OFF Below 1 V
A9-40 (ACC) - A9-6 (GND) P - W-B Power source (ACC) Ignition switch: ACC 11 to 14 V
A10-2 (LOCK) - A9-30
(SG-6)L - W-G A/C lock sensor signalEngine is running
Front blower control dial:
LO
A/C switch: ONPulse generation
(See waveform 2)
A10-6 (BLWC) - A9-6
(GND)L-W - W-BRear blower motor
operation signalIgnition switch: ON
Rear blower control dial:
ON1.7 to 2.0 V
A10-7 (VMC) - A9-6
(GND)P-B - W-BRear blower motor
operation signalIgnition switch: ON
Rear blower control dial:
ON0 to 9 V
A10-9 (TAM) - A9-30 (SG-
6)
B-R - W-GA/C ambient temperature
sensor signalIgnition switch: ON
Ambient temperature:
25C (77F)1.35 to 1.75 V
A10-9 (TAM) - A9-30 (SG-
6)B-R - W-GA/C ambient temperature
sensor signalIgnition switch: ON
Ambient temperature:
40
C (104F)0.85 to 1.25 V
A10-10 (PRE) - A9-30
(SG-6)V - W-GA/C pressure sensor
signalStart engine
Operate A/C system
Refrigerant pressure:
Abnormal pressure (more
than 3140 kPa (32.0 kgf/
cm
2, 455 psi))4.74 V or higher
A10-10 (PRE) - A9-30
(SG-6)V - W-GA/C pressure sensor
signalStart engine
Operate A/C system
Refrigerant pressure:
Abnormal pressure (less
than 196 kPa (2.0 kgf/cm
2,
28 psi))Below 0.76 V Terminal No.
(Symbols)Wiring Color Description Condition Specified Condition

AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Manual Air Conditioning System)AC–167
AC
(a) Waveform 1:
A10-10 (PRE) - A9-30
(SG-6)V - W-GA/C pressure sensor
signalStart engine
Operate A/C system
Refrigerant pressure:
Normal pressure (less
than 3140 kPa (32.0 kgf/
cm
2, 455 psi) and more
than 196 kPa (2.0 kgf/cm2,
28 psi))0.76 to 4.74 V
A10-11 (TPO) - A9-27
(SG-1)LG - GR-LAir outlet control damper
position sensor signalIgnition switch: ON
Front mode control dial:
FOOT
DEF1.0 to 4.0 V
A10-12 (TP) - A9-26 (SG) L-R - LG-RAir mix control damper
position sensor signalIgnition switch: ON
Front temperature control
dial: MAX. HOT
MAX.
COLD1.0 to 4.0 V
A10-19 (REC) - A9-6
(GND)GR-R - W-BAir inlet control servo
motor operation signalIgnition switch: ON
R/F switch: FRESHBelow 1 V
A10-19 (REC) - A9-6
(GND)GR-R - W-BAir inlet control servo
motor operation signalIgnition switch: ON
R/F switch:
RECIRCULATION11 to 14 V
A10-20 (FRS) - A9-6
(GND)W-L - W-BAir inlet control servo
motor operation signalIgnition switch: ON
R/F switch:
RECIRCULATIONBelow 1 V
A10-20 (FRS) - A9-6
(GND)W-L - W-BAir inlet control servo
motor operation signalIgnition switch: ON
R/F switch: FRESH11 to 14 V
A10-21 (HRC) - A9-6
(GND)R-G - W-BRear blower motor
operation signalIgnition switch: ON
Rear blower control dial:
OFF11 to 14 V
A10-21 (HRC) - A9-6
(GND)R-G - W-BRear blower motor
operation signalIgnition switch: ON
Rear blower control dial:
ONBelow 1 V
A10-22 (MGC) - A9-6
(GND)R-L - W-BA/C compressor magnetic
clutch relay operation
signalIgnition switch: ON
A/C switch: OFF11 t o 1 4 V
A10-22 (MGC) - A9-6
(GND)R-L - W-BA/C compressor magnetic
clutch relay operation
signalIgnition switch: ON
A/C switch: ONBelow 1 V
A10-23 (TPH) - A9-29
(SG)B - W-RRear air mix control
damper position sensor
signalIgnition switch: ON
Rear temperature control
dial: MAX. HOT
MAX.
COLD1.0 to 4.0 V
A10-24 (TPM) - A9-29
(SG)G - W-RRear air outlet control
damper position sensor
signalIgnition switch: ON
Rear mode control switch:
FOOT
FACE1.0 to 4.0 V Terminal No.
(Symbols)Wiring Color Description Condition Specified Condition
E106664E04
Item Contents
Terminal No.
(Symbols)A9-12 (SOL+) - A9-6 (GND)
Tool Setting 5 V/DIV., 500
s/DIV.
Vehicle ConditionEngine is running
A/C switch: ON
Front blower control dial: LO

AC–18AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)
AC
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
Using the intelligent tester to read the Data List allows
the values or states of switches, sensors, actuators and
other items to be read without removing any parts. This
non-intrusive inspection can be very useful because
intermittent conditions or signals may be discovered
before parts or wiring is disturbed. Reading the Data List
information early in troubleshooting is one way to save
diagnostic time.
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) From the display on the tester, read the "DATA
LIST".
AIR CONDITIONER / DATA LIST
Tester Display Measurement Item/Range Normal Condition Diagnostic Note
ROOM TEMPRoom temperature sensor / min.:
-6.5
C (20.3F), max.: 57.25C
(135.05
F)Actual cabin temperature -
AMBI TEMP SENSAmbient temperature sensor /
min.: -23.3
C (-9.94F), max.:
65..95C (150.71F)Actual ambient temperature -
AMBI TEMPAdjusted ambient temperature /
min.: -30.8
C (-23.44F), max.:
50.8
C (123.44F)--
EVAP TEMPEvaporator temperature sensor /
min.: -29.7
C (-21.46F), max.:
59.55
C (139.19F)Actual evaporator temperature -
SOLAR SENS-DSolar sensor (D side) / min.: 0,
max.: 255Changes depending on
brightness (D side)-
SOLAR SENS-PSolar sensor (P side) / min.: 0,
max.: 255Changes depending on
brightness (P side)-
COOLANT TEMPEngine coolant temperature /
min.: 1.3
C (34.34F), max.:
90.55C (194.99F)Actual engine coolant
temperature-
SET TEMP-DSet temperature (D side) / min.: 0,
max. 255Actual set temperature (D side) -
SET TEMP-PSet temperature (P side) / min.: 0,
max. 255Actual set temperature (P side) -
ESTIMATE TEMP-DEstimated temperature (D side) /
min.: -358.4
C (-613.12F), max.:
358.4
C (677.12F)--
ESTIMATE TEMP-PEstimated temperature (P side) /
min.: -358.4
C (-613.12F), max.:
358.4
C (677.12F)--
A/M DAMP POS-DAir mix damper position (D side) /
min.: -14%, max.: 113.5%Changes depending on the set
temperature (D side)-
A/M DAMP POS-PAir mix damper position (P side) /
min.: -14%, max.: 113.5%Changes depending on the set
temperature (P side)-
A/I DAMP POSAir inlet damper position / min.: -
14%, max.: 113.5%Changes depending on air inlet
damper position-
A/O DAMP POSAir outlet damper position / min.: -
14%, max.: 113.5%Changes depending on air outlet
damper position-
A/M DAMP TARG-DAir mix damper target position (D
side) / min.: -14%, max.: 113.5%Changes depending on the set
temperature (D side)-
A/M DAMP TARG-PAir mix damper target position (P
side) / min.: -14%, max.: 113.5%Changes depending on the set
temperature (P side)-