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ac5wzw00001919
CLIMATE CONTROL UNIT INSPECTION [MANUAL AIR CONDITIONER]
id0740a2802200
1. Remove the climate control unit with the connector connected. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER].)
2. Switch the ignition ON (engine off or on).
3. Connect the negative (-) lead of the tester to the body ground.
4. By inserting the positive (+) lead of the tester into the climate control unit connector, measure the voltage according to the terminal voltage table.
ac5wzw00001919
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Terminal Voltage Table (Reference)
|
Terminal |
Signal name |
Connected to |
Measurement condition |
Voltage (V) |
Inspection item(s) |
|---|---|---|---|---|---|
|
A
|
TNS signal
|
Front body control module (FBCM)
|
TNS OFF
|
1.0 or less
|
• Related wiring harness
• Front body control module (FBCM)
|
|
TNS ON
|
B+
|
||||
|
B
|
Illumination (-)
|
Instrument cluster
|
Headlight ON and panel light control MAX
|
2.0
|
• Instrument cluster
• Related wiring harness
|
|
Headlight ON and panel light control MIN
|
9.65
|
||||
|
C
|
Motor operation
|
Air intake actuator
|
Switched to RECIRCULATE
|
B+
|
• Related wiring harness
• Air intake actuator
|
|
Switched to FRESH
|
1.0 or less
|
||||
|
D
|
Ground
|
Body ground
|
Under any condition
|
1.0 or less
|
• Related wiring harness
|
|
E
|
Motor operation
|
Air intake actuator
|
Switched to RECIRCULATE
|
1.0 or less
|
• Related wiring harness
• Air intake actuator
|
|
Switched to FRESH
|
B+
|
||||
|
F
|
Sensor GND
|
Evaporator temperature sensor
|
Under any condition
|
1.0 or less
|
• Related wiring harness
• Evaporator temperature sensor
|
|
G
|
Blower fan ON/OFF signal
|
Fan switch
|
Fan stopped
|
B+
|
• Related wiring harness
• Resistor
• Fan switch terminal voltage (D)
|
|
Fan on
|
1.0 or less
|
||||
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H*1
|
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
• Climate control unit: terminal voltage (F)
|
|
I
|
Blower fan position signal
|
Fan switch
|
3rd, 4th
|
1.0 or less
|
• Related wiring harness
• Resistor
• Fan switch terminal voltage (D)
|
|
off, 1st, 2nd
|
B+
|
||||
|
J
|
B+
|
ROOM 15 A fuse
|
Under any condition
|
B+
|
• Related wiring harness
• ROOM 15 A fuse
|
|
K
|
LIN
|
Front body control module (FBCM)
|
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.
|
• Related wiring harness
|
|
|
L
|
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
|
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