TOYOTA SIENNA 2007 Service Repair Manual

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

AC–14AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)
AC
(b) Waveform 2:
(c) Waveform 3:
DIAGNOSIS SYSTEM
1. CHECK DLC3
(a) The vehicle's ECM uses the ISO 15765-4 for
communication. The terminal arrangement of the
DLC3 complies with SAE J1962 and matches the
ISO 15765-4 format.
HINT:
Connect the cable of the intelligent tester to the
DLC3, turn the ignition switch to the ON position
and attempt to use the tester. If the display indicates
that a communication error has occurred, there is a
problem either with the vehicle or with the tester.
If communication is normal when the tester is
connected to another vehicle, inspect the DLC3 of
the original vehicle.
If communication is still not possible when the tester
is connected to another vehicle, the problem may be
in the tester itself. Consult the Service Department
listed in the tester's instruction manual.
E106664E02
Item Contents
Terminal No. (Symbols) A9-4 (SOL+) - A9-1 (GND)
Tool Setting 5 V/DIV., 500
s/DIV.
Vehicle ConditionEngine is running
A/C switch: ON
E116941E01
Item Contents
Terminal No. (Symbols) A9-9 (LOCK) - A9-1 (GND)
Tool Setting 200 mV/DIV., 100 ms./DIV.
Vehicle ConditionEngine is running
Blower switch: LO
A/C switch: ON
H100769E16
Symbol (Terminal No.) Terminal Description Condition Specified Condition
SIL (7) - SG (5) Bus "+" line During transmission Pulse generation
CG (4) - Body ground Chassis ground Always Below 1
SG (5) - Body ground Signal ground Always Below 1
BAT (16) - Body ground Battery positive Always 11 to 14 V
CANH (6) - CANL (14) HIGH-level CAN bus line Ignition switch OFF*54 to 69
CANH (6) - Battery positive HIGH-level CAN bus line Ignition switch OFF* 1 M or higher
CANH (6) - CG (4) HIGH-level CAN bus line Ignition switch OFF* 3 M
or higher
CANL (14) - Battery positive LOW-level CAN bus line Ignition switch OFF* 1 M
or higher
CANL (14) - CG (4) LOW-level CAN bus line Ignition switch OFF* 3 M
or higher

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–168AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Manual Air Conditioning System)
AC
(b) Waveform 2:
E116941E04
Item Contents
Terminal No.
(Symbols)A10-2 (LOCK) - A9-30 (SG-6)
Tool Setting 200 mV/DIV., 10 ms/DIV.
Vehicle ConditionEngine is running
A/C switch: ON
Front blower control dial: LO

AC–16AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)
AC
CHECK MODE PROCEDURE
1. LIST OF OPERATION METHODS
By operating each of the A/C control switches as shown
in the diagram below, it is possible to enter the diagnosis
check mode.