id0740a1802200
1.Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)
2.Remove the following parts:
3.Remove the climate control unit with the connector connected. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
4.Connect the negative battery terminal.
5.Switch the ignition ON (engine off or on).
6.Connect the negative (-) lead of the tester to body ground.
7.Insert the positive (+) lead of the tester into each climate control unit terminal and measure the voltage according to the terminal voltage table.
am2zzw00012419
|
Terminal voltage table (reference)
| Terminal |
Signal name |
Connected to |
Measurement condition |
Voltage (V) |
Inspection item (s) |
|
|---|---|---|---|---|---|---|
|
A
|
MS_CAN_L
|
CAN related module
|
Because this terminal is for communication, integrity determination by terminal voltage is not possible.
|
• Related wiring harness
|
||
|
B
|
MS_CAN_H
|
CAN related module
|
Because this terminal is for communication, integrity determination by terminal voltage is not possible.
|
• Related wiring harness
|
||
|
C
|
GND
|
Body ground
|
Under any condition
|
1.0 or less
|
• Related wiring harness
|
|
|
D
|
Sensor GND
|
• Air intake actuator
• Air mix actuator
• Airflow mode actuator
• Cabin temperature sensor
• Evaporator temperature sensor
|
Under any condition
|
1.0 or less
|
• Related wiring harness
• Climate control unit: terminal voltage (P)
|
|
|
E
|
—
|
—
|
—
|
—
|
—
|
|
|
F
|
Potentiometer input
|
Air mix actuator
|
Set temperature at MAX HOT
|
3.9
|
• Related wiring harness
• Air mix actuator
• Climate control unit: terminal voltage (P)
|
|
|
Set temperature at MAX COLD
|
1.0
|
|||||
|
G
|
Blower fan speed control
|
Blower fan controller
|
• Related wiring harness
• Blower fan controller
|
|||
|
H
|
Potentiometer input
|
Airflow mode actuator
|
VENT
|
4.0
|
• Related wiring harness
• Airflow mode actuator
• Climate control unit: terminal voltage (P)
|
|
|
BI-LEVEL
|
3.3
|
|||||
|
HEAT
|
2.5
|
|||||
|
HEAT/DEF
|
1.7
|
|||||
|
DEFROSTER
|
0.9
|
|||||
|
I
|
—
|
—
|
—
|
—
|
—
|
|
|
J
|
Solar radiation sensor input
|
Solar radiation sensor
|
Sunlight shined directly on solar radiation sensor
|
Voltage value is output
|
• Related wiring harness
• Climate control unit: terminal voltage (P)
• Solar radiation sensor
|
|
|
Blocking light to solar radiation sensor
|
1.0 or less
|
|||||
|
K
|
—
|
—
|
—
|
—
|
—
|
|
|
L
|
—
|
—
|
—
|
—
|
—
|
|
|
M
|
Motor operation (RECIRCULATE)
|
Air intake actuator
|
• Moving towards RECIRCULATE
*1
• Moving towards FRESH
*2
|
B+
|
• Related wiring harness
• Air intake actuator
|
|
|
• Moving towards FRESH
*1
• Moving towards RECIRCULATE
*2
|
1.0 or less
|
|||||
|
N
|
Cabin temperature sensor input
|
Cabin temperature sensor
|
Compared with temperature detected by cabin temperature sensor
|
Refer to graph 1
|
• Related wiring harness
• Cabin temperature sensor
• Climate control unit: terminal voltage (D)
|
|
|
O
|
Motor operation (FRESH)
|
Air intake actuator
|
• Moving towards RECIRCULATE
*1
• Moving towards FRESH
*2
|
1.0 or less
|
• Related wiring harness
• Air intake actuator
|
|
|
• Moving towards FRESH
*1
• Moving towards RECIRCULATE
*2
|
B+
|
|||||
|
P
|
+5V
|
• Air intake actuator
• Air mix actuator
• Airflow mode actuator
• Solar radiation sensor
|
Under any condition
|
5
|
• Related wiring harness
• Air intake actuator
• Air mix actuator
• Airflow mode actuator
• Solar radiation sensor
• Climate control unit: terminal voltage (D)
|
|
|
Q
|
Motor operation (VENT)
|
Airflow mode actuator
|
Moving towards VENT
|
B+
|
• Related wiring harness
• Airflow mode actuator
|
|
|
Moving towards DEFROSTER
|
1.0 or less
|
|||||
|
R
|
Evaporator temperature sensor input
|
Evaporator temperature sensor
|
Compared with temperature detected by evaporator temperature sensor
|
Refer to graph 2
|
• Related wiring harness
• Evaporator temperature sensor
• Climate control unit: terminal voltage (D)
|
|
|
S
|
Motor operation (DEFROSTER)
|
Airflow mode actuator
|
Moving towards DEFROSTER
|
B+
|
• Related wiring harness
• Airflow mode actuator
|
|
|
Moving towards VENT
|
1.0 or less
|
|||||
|
T
*1
|
Potentiometer input
|
Air intake actuator
|
RECIRCULATE
|
1.7
|
• Related wiring harness
• air intake actuator
• Climate control unit: terminal voltage (P)
|
|
|
FRESH
|
3.2
|
|||||
|
U
|
Motor operation (COLD)
|
Air mix actuator
|
Moving towards HOT
|
1.0 or less
|
• Related wiring harness
• Air mix actuator
|
|
|
Moving towards COLD
|
B+
|
|||||
|
V
|
B+
|
INTERIOR 15 A fuse
|
Under any condition
|
B+
|
• Related wiring harness
• INTERIOR 15 A fuse
|
|
|
W
|
Motor operation (HOT)
|
Air mix actuator
|
Moving towards HOT
|
B+
|
• Related wiring harness
• Air mix actuator
|
|
|
Moving towards COLD
|
1.0 or less
|
|||||
|
X
|
IG1
|
C/U IG1 15 A fuse
|
Switch the ignition ON (engine off or on)
|
B+
|
• Related wiring harness
• C/U IG1 15 A fuse
|
|
|
|
Blower Fan Speed Control Signal
Fan stopped
adejjw00015506
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Manual 1st
adejjw00015507
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Manual 3rd
adejjw00015508
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Manual 7th
adejjw00015509
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