id0740a2802200
Climate Control Unit With RECIRCULATE/FRESH Lever Type
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 [MANUAL AIR CONDITIONER].)
4.Switch the ignition ON (engine off or on).
5.Connect the negative (-) lead of the tester to the body ground.
6.By inserting the positive (+) lead of the tester into the climate control unit connector, measure the voltage according to the terminal voltage table.
am2zzw00012421
|
Terminal Voltage Table (Reference)
| Terminal |
Signal name |
Connected to |
Measurement condition |
Voltage (V) |
Inspection item(s) |
|
|---|---|---|---|---|---|---|
|
A
|
—
|
—
|
—
|
—
|
—
|
|
|
B
|
—
|
—
|
—
|
—
|
—
|
|
|
C
|
—
|
—
|
—
|
—
|
—
|
|
|
D
|
Illumination (panel light control)
|
Instrument cluster
|
Light switch off
|
1.0 or less
|
Instrument cluster
|
|
|
Light switch on (TNS position) and panel light control MAX position
|
1.0 or less
|
|||||
|
Light switch on (TNS position) and panel light control MIN position
|
7.84
|
|||||
|
E
|
—
|
—
|
—
|
—
|
—
|
|
|
F
|
TNS signal
|
Electrical supply unit (ESU)
|
Light switch ON
|
B+
|
Electrical supply unit (ESU)
|
|
|
Light switch off
|
1.0 or less
|
|||||
|
G
|
A/C switch input
|
Instrument cluster
|
Ignition is switched ON (engine off or on) and A/C switch off
|
4.72
|
Instrument cluster
|
|
|
Ignition is switched ON (engine off or on) and A/C switch on
|
1.0 or less
|
|||||
|
H
|
—
|
—
|
—
|
—
|
—
|
|
|
I
|
—
|
—
|
—
|
—
|
—
|
|
|
J
|
IG1
|
C/U IG1 15 A
|
Ignition is switched ON (engine off or on)
|
B+
|
C/U IG1 15 A
|
|
|
Ignition is switched off
|
1.0 or less
|
|||||
|
K
|
—
|
—
|
—
|
—
|
—
|
|
|
L
|
—
|
—
|
—
|
—
|
—
|
|
|
M
|
GND
|
Instrument cluster
|
Under any condition
|
1.0 or less
|
Body ground
|
|
|
N
|
A/C switch illumination input
|
Instrument cluster
|
Ignition is switched ON (engine off or on)
|
B+
|
Instrument cluster
|
|
|
O
|
—
|
—
|
—
|
—
|
—
|
|
|
P
|
—
|
—
|
—
|
—
|
—
|
|
|
Q
|
—
|
—
|
—
|
—
|
—
|
|
|
R
|
—
|
—
|
—
|
—
|
—
|
|
|
S
|
Rear window defogger switch illumination
|
Instrument cluster
|
Rear window defogger switch off
|
12.22
|
Instrument cluster
|
|
|
Rear window defogger switch ON
|
1.686
|
|||||
|
T
|
—
|
—
|
—
|
—
|
—
|
|
|
U
|
Rear window defogger switch input
|
Instrument cluster
|
Ignition is switched ON (engine off or on) and rear window defogger switch off
|
4.72
|
Instrument cluster
|
|
|
Ignition is switched ON (engine off) and rear window defogger switch on
|
1.0 or less
|
|||||
|
V
|
—
|
—
|
—
|
—
|
—
|
|
|
W
|
MS CAN_H
|
CAN system related module
|
Terminal used for communication therefore determination based on terminal voltage is not possible.
|
|||
|
X
|
MS CAN_L
|
CAN system related module
|
Terminal used for communication therefore determination based on terminal voltage is not possible.
|
|||
Climate Control Unit With RECIRCULATE/FRESH Switch Type
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 [MANUAL AIR CONDITIONER].)
4.Switch the ignition ON (engine off or on).
5.Connect the negative (-) lead of the tester to the body ground.
6.By inserting the positive (+) lead of the tester into the climate control unit connector, measure the voltage according to the terminal voltage table.
am3zzw00017782
|
Terminal Voltage Table (Reference)
| Terminal |
Signal name |
Connected to |
Measurement condition |
Voltage (V) |
Inspection item(s) |
|
|---|---|---|---|---|---|---|
|
A
|
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
|
|||||
|
B
|
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+
|
|||||
|
C
|
+5V
|
Air intake actuator
|
Under any condition
|
5
|
• Related wiring harness
• Air intake actuator
• Climate control unit: terminal voltage (J)
|
|
|
D
|
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
|
|
|
Switch the ignition off
|
1.0 or less
|
|||||
|
E
|
Potentiometer input
|
Air intake actuator
|
RECIRCULATE
|
1.6
|
• Related wiring harness
• Air intake actuator
• Climate control unit: terminal voltage (C)
|
|
|
FRESH
|
3.2
|
|||||
|
F
|
B+
|
• INTERIOR 15 A
• ROOM 25 A
|
Under any condition
|
B+
|
• INTERIOR 15 A
• ROOM 25 A
|
|
|
G
|
Evaporator temperature sensor input
|
Evaporator temperature sensor
|
Compared with temperature detected by evaporator temperature sensor
|
Refer to graph 1
|
• Related wiring harness
• Evaporator temperature sensor
|
|
|
H
|
Blower fan speed control
|
Blower fan controller
|
• Related wiring harness
• Blower fan controller
|
|||
|
I
|
GND
|
Body ground
|
Under any condition
|
1.0 or less
|
Body ground
|
|
|
J
|
Sensor GND
|
• Air intake actuator
• Evaporator temperature sensor
|
Under any condition
|
1.0 or less
|
• Related wiring harness
• Climate control unit: terminal voltage (C)
|
|
|
K
|
MS_CAN_H
|
CAN related module
|
Because this terminal is for communication, integrity determination by terminal voltage is not possible.
|
• Related wiring harness
|
||
|
L
|
MS_CAN_L
|
CAN related module
|
Because this terminal is for communication, integrity determination by terminal voltage is not possible.
|
• Related wiring harness
|
||
|
Blower Fan Speed Control Signal
Fan stopped
adejjw00015506
|
Manual 1st
adejjw00015507
|
Manual 3rd
adejjw00015508
|
Manual 7th
adejjw00015509
|