Page 2817 of 3000

AC–74AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)
AC
DESCRIPTION
This sensor detects the position of the air inlet control servo motor and sends the appropriate signals to
the A/C amplifier. The position sensor is built in the air inlet control servo motor.
The position sensor's resistance changes as the air inlet control servo motor arm moves.
It outputs voltage (5 V) that is input to terminal 1 and terminal 3 via the variable resistor, and then to the A/
C amplifier.
The A/C amplifier determines the arm position based on the input voltage from the position sensor.
DTC B1432/32 Air Inlet Damper Position Sensor Circuit
DTC No. DTC Detection Condition Trouble Area
B1432/32Open or short in power source circuit in air inlet damper
position sensor circuit• Air inlet control servo motor (air inlet damper
position sensor)
• Harness or connector between air inlet control
servo motor (air inlet damper position sensor) and
A/C amplifier
• A/C amplifier
E109300E25
Page 2818 of 3000

AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–75
AC
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.
(c) Select the items below in the DATA LIST, and read the
display on the intelligent tester.
DATA LIST / AIR CONDITIONER
OK:
The display is as specified in the normal condition
column.
Result
B
C
1READ VALUE OF INTELLIGENT TESTER
I036321E22
Tester Display Measurement Item/Range Normal Condition Diagnostic Note
A/I DAMP POSAir inlet damper position / min.: -
14%, max.: 113.5%Damper is at
"RECIRCULATION": -10%
Damper is at "FRESH": 110%
Damper is at "HALF-
RECIRCULATION": 35 to 75%Open in the circuit: 50.0%
A/I DAMP TARGAir inlet damper target position /
min.: -14%, max.: 113.5%
Result Proceed to
NGA
OK (When troubleshooting according to the PROBLEM SYMPTOMS TABLE) B
OK (When troubleshooting according to the DTC) C
PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN IN PROBLEM SYMPTOMS TABLE
REPLACE A/C AMPLIFIER
Page 2819 of 3000
AC–76AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)
AC
A
(a) Remove the air inlet control servo motor.
(b) Disconnect the connector from the air inlet control servo
motor.
(c) Measure the resistance according to the value(s) in the
table below.
Standard resistance
(d) Measure the resistance according to the value(s) in the
table below.
Standard resistance
(e) As the air inlet control servo motor moves from
RECIRCULATION to FRESH, the resistance decreases
gradually without interruption.
NG
OK
2INSPECT AIR INLET CONTROL SERVO MOTOR
E145188E01
Tester Connection Condition Specified Condition
A16-1 - A16-2 Always 4.2 to 7.8 k
Tester Connection Condition Specified Condition
A16-3 - A16-2RECIRCULATION
position3.6 to 6.7 k
A16-3 - A16-2 FRESH position 0.6 to 1.1 k
E108925E09
REPLACE AIR INLET CONTROL SERVO
MOTOR
Page 2820 of 3000
AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–77
AC
(a) Disconnect the connector from the A/C amplifier.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance
NG
OK
3CHECK HARNESS AND CONNECTOR (AIR INLET CONTROL SERVO MOTOR - A/C
AMPLIFIER)
E145121E04
E143742E36
Tester Connection Condition Specified Condition
A9-28 (TPI) - A16-3 Always Below 1
A9-21 (SG-1) - A16-2 Always Below 1
A9-30 (S5-1) - A16-1 Always Below 1
A9-28 (TPI) - Body
groundAlways 10 k or higher
A9-21 (SG-1) - Body
groundAlways 10 k
or higher
A9-30 (S5-1) - Body
groundAlways 10 k
or higher
REPAIR OR REPLACE HARNESS OR
CONNECTOR
REPLACE A/C AMPLIFIER
Page 2821 of 3000

AC–78AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)
AC
DESCRIPTION
This sensor detects the position of the air outlet control servo motor and sends the appropriate signals to
the A/C amplifier. The position sensor is built in the air outlet control servo motor. The position sensor's
resistance changes as the air outlet control servo motor arm moves.
It outputs voltage (5 V) that is input to terminal 2 and terminal 3 via the variable resistor, and then to the A/
C amplifier. The A/C amplifier determines the arm position based on the input voltage from the position
sensor.
DTC B1433/33 Air Outlet Damper Position Sensor Circuit
DTC No. DTC Detection Condition Trouble Area
B1433/33Open or short in power source circuit in air outlet
damper position sensor circuit.• Air outlet control servo motor (air outlet damper
position sensor)
• Harness or connector between air outlet control
servo motor (air outlet damper position sensor) and
A/C amplifier
• A/C amplifier
E109300E01
Page 2822 of 3000

AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–79
AC
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.
(c) Select the items below in the DATA LIST, and read the
displays on the intelligent tester.
DATA LIST / AIR CONDITIONER
OK:
The display is as specified in the normal condition
column.
Result
B
1READ VALUE OF INTELLIGENT TESTER
I036321E27
Tester Display Measurement Item/Range Normal Condition Diagnostic Note
A/O DAMP POSAir outlet damper position / min.: -
14%, max.: 113.5%Damper is at "FACE": 0%
Damper is at "FACE/FOOT":
33.5%
Damper is at "FOOT": 53.5%
Damper is at "FACE/DEF": 73.5%
Damper is at "DEF": 100%Open in the circuit: 50.0%
A/O DAMP TARGAir outlet damper target position /
min.: -14%, max.: 113.5%
Result Proceed to
NGA
OK (When troubleshooting according to the PROBLEM SYMPTOM TABLE)B
OK (When troubleshooting according to the DTC) C
PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN IN PROBLEM SYMPTOMS TABLE
Page 2823 of 3000
AC–80AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)
AC
C
A
(a) Remove the air outlet control servo motor.
(b) Disconnect the connector from the air outlet control
servo motor.
(c) Measure the resistance according to the value(s) in the
table below.
Standard resistance
(d) Measure the resistance according to the value(s) in the
table below.
Standard resistance
(e) As the air outlet control servo motor moves from the
FACE side to the DEF side, the resistance decreases
gradually without interruption.
NG
OKREPLACE A/C AMPLIFIER
2INSPECT AIR OUTLET CONTROL SERVO MOTOR
E147338E01
Tester Connection Condition Specified Condition
A19-2 - A19-1 Always 4.2 to 7.8 k
Tester Connection Condition Specified Condition
A19-3 - A19-1 DEF position 0.8 to 1.6 k
A19-3 - A19-1 FACE position 3.4 to 6.2 k
E108925E05
REPLACE AIR OUTLET CONTROL SERVO
MOTOR
Page 2824 of 3000
AIR CONDITIONING – AIR CONDITIONING SYSTEM (for Automatic Air Conditioning Sys-
tem)AC–81
AC
(a) Disconnect the connector from the A/C amplifier.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance
NG
OK
3CHECK HARNESS AND CONNECTOR (AIR OUTLET CONTROL SERVO MOTOR - A/C
AMPLIFIER)
E145121E05
E143742E37
Tester Connection Condition Specified Condition
A9-29 (TPO) - A19-3 Always Below 1
A9-21 (SG-1) - A19-1 Always Below 1
A9-30 (S5-1) - A19-2 Always Below 1
A9-29 (TPO) - Body
groundAlways 10 k or higher
A9-21 (SG-1) - Body
groundAlways 10 k
or higher
A9-30 (S5-1) - Body
groundAlways 10 k
or higher
REPAIR OR REPLACE HARNESS OR
CONNECTOR
REPLACE A/C AMPLIFIER