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ac9uuw00007360
REAR CLIMATE CONTROL UNIT INSPECTION
id074000805500
1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)
2. Remove the rear console panel. (See REAR CONSOLE REMOVAL/INSTALLATION.)
3. Remove the rear climate control unit with the connector connected. (See REAR CLIMATE CONTROL UNIT REMOVAL/INSTALLATION.)
4. Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)
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 rear climate control unit terminal and measure the voltage according to the terminal voltage table.
ac9uuw00007360
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Terminal voltage table (reference)
|
Terminal |
Signal name |
Connected to |
Measurement condition |
Voltage (V) |
Inspection item (s) |
|
|---|---|---|---|---|---|---|
|
A
|
Motor operation (VENT)
|
Rear airflow mode actuator
|
Moving towards VENT
|
B+
|
• Related wiring harness
• Rear airflow mode actuator
|
|
|
Moving towards HEAT
|
1.0 or less
|
|||||
|
B
|
IG2
|
Front body control module (FBCM)
|
Switch the ignition ON (engine off or on)
|
B+
|
• Related wiring harness
• Front body control module (FBCM)
|
|
|
Switch the ignition off
|
1.0 or less
|
|||||
|
C
|
Motor operation (HEAT)
|
Rear airflow mode actuator
|
Moving towards HEAT
|
B+
|
• Related wiring harness
• Rear airflow mode actuator
|
|
|
Moving towards VENT
|
1.0 or less
|
|||||
|
D
|
—
|
—
|
—
|
—
|
—
|
|
|
E
|
Motor operation (COLD)
|
Rear air mix actuator
|
Moving towards HOT
|
1.0 or less
|
• Related wiring harness
• Rear air mix actuator
|
|
|
Moving towards COLD
|
B+
|
|||||
|
F
|
Blower motor feedback
|
• Power MOS FET
• Rear blower motor
|
Fan stopped
|
B+
|
• Related wiring harness
• Power MOS FET
• Rear blower motor
• Rear blower relay
• R.HEATER 40 A fuse
|
|
|
Fan: manual 1st
|
10.7
|
|||||
|
Fan: manual 3rd
|
8.4
|
|||||
|
Fan: manual 5th
|
4.4
|
|||||
|
G
|
Motor operation (HOT)
|
Rear air mix actuator
|
Moving towards HOT
|
B+
|
• Related wiring harness
• Rear air mix actuator
|
|
|
Moving towards COLD
|
1.0 or less
|
|||||
|
H
|
Blower fan speed control
|
• Power MOS FET
• Rear blower motor
|
Switch the ignition off
|
1.0 or less
|
• Related wiring harness
• Power MOS FET
• Rear blower motor
|
|
|
Fan stopped (Switch the ignition ON (engine off or on))
|
1.0 or less
|
|||||
|
Airflow mode: VENT
|
Fan: manual 1st
|
2.2
|
||||
|
Fan: manual 3rd
|
2.3
|
|||||
|
Fan: manual 5th
|
2.5
|
|||||
|
I
|
—
|
—
|
—
|
—
|
—
|
|
|
J
|
—
|
—
|
—
|
—
|
—
|
|
|
K
|
—
|
—
|
—
|
—
|
—
|
|
|
L
|
—
|
—
|
—
|
—
|
—
|
|
|
M
|
—
|
—
|
—
|
—
|
—
|
|
|
N
|
—
|
—
|
—
|
—
|
—
|
|
|
O
|
Sensor GND
|
• Rear air mix actuator
• Rear airflow mode actuator
|
Under any condition
|
1.0 or less
|
• Related wiring harness
• Rear climate control unit: terminal voltage (W)
|
|
|
P
|
LIN
|
Front climate control unit
|
Because this terminal is for communication, integrity determination by terminal voltage is not possible.
|
|||
|
Q
|
Potentiometer input
|
Rear airflow mode actuator
|
VENT
|
1.0
|
• Related wiring harness
• Rear airflow mode actuator
• Rear climate control unit: terminal voltage (W)
|
|
|
BI-LEVEL
|
2.2
|
|||||
|
HEAT
|
3.5
|
|||||
|
R
|
GND
|
Body ground
|
Under any condition
|
1.0 or less
|
• Related wiring harness
|
|
|
S
|
Potentiometer input
|
Rear air mix actuator
|
Set temperature at MAX HOT
|
3.4
|
• Related wiring harness
• Rear air mix actuator
• Rear climate control unit: terminal voltage (W)
|
|
|
Set temperature at MAX COLD
|
1.2
|
|||||
|
T*1
|
LIN
|
Rear seat warmer control unit
|
Because this terminal is for communication, integrity determination by terminal voltage is not possible.
|
|||
|
U
|
—
|
—
|
—
|
—
|
—
|
|
|
V
|
B+
|
• ROOM 25 A fuse
• INTERIOR 10 A fuse
|
Under any condition
|
B+
|
• Related wiring harness
• ROOM 25 A fuse
• INTERIOR 10 A fuse
|
|
|
W
|
+5V
|
• Rear air mix actuator
• Rear airflow mode actuator
|
Under any condition
|
5
|
• Related wiring harness
• Rear air mix actuator
• Rear airflow mode actuator
• Rear climate control unit: terminal voltage (O)
|
|
|
X
|
IG1
|
With i-stop
• IGNITION relay (IG1_STAB)
• METER2 15A fuse
Without i-stop
• C/U IG1 15 A fuse
|
Switch the ignition ON (engine off or on)
|
B+
|
• Related wiring harness
• C/U IG1 15 A fuse
• IGNITION relay (IG1_STAB)
• METER2 15A fuse
|
|
|
Switch the ignition off
|
1.0 or less
|
|||||