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ar8uuw00001540
CLIMATE CONTROL UNIT INSPECTION [MANUAL AIR CONDITIONER]
id0740a2802200
1. Switch the ignition to ON.
2. Connect the negative (-) lead of the tester to body ground.
3. By inserting the positive (+) lead of the tester into each climate control unit terminal, measure the voltage according to the terminal voltage table.
Terminal voltage table (reference)
ar8uuw00001540
|
|
Terminal |
Signal name |
Connected to |
Measurement condition |
Voltage (V) |
Inspection item(s) |
|---|---|---|---|---|---|
|
A
|
B+
|
ROOM 15 A fuse
|
Under any condition
|
B+
|
• ROOM 15 A fuse
• Related wiring harness
|
|
B
|
ACC
|
Ignition switch
|
Ignition switch ACC
|
B+
|
• Ignition switch
• Related wiring harness
|
|
Ignition switch LOCK
|
1.0 or less
|
||||
|
C
|
TNS
|
TNS relay
|
When light switch TNS
|
B+
|
• light switch
• Related wiring harness
|
|
When light switch OFF
|
1.0 or less
|
||||
|
D
|
Panel light control
|
Panel light control switch
|
Light switch ON and panel light control switch at max
|
1.0 or less
|
• Panel light control switch
• Related wiring harness
|
|
Light switch ON and panel light control switch at min
|
11.5
|
||||
|
E
|
IG2
|
Ignition switch
|
Ignition switch ON
|
B+
|
• Ignition switch
• Related wiring harness
|
|
Ignition switch LOCK or ACC
|
1.0 or less
|
||||
|
F
|
Vehicle speed
|
Instrument cluster
|
When vehicle driving
|
1.0 or less
|
• Instrument cluster
• Related wiring harness
|
|
G
|
Shield GND
|
A/C amplifier
|
Under any condition
|
1.0 or less
|
• A/C amplifier
• Related wiring harness
|
|
H
|
GND
|
Body ground
|
Under any condition
|
1.0 or less
|
• Related wiring harness
|
|
I
|
Serial signal 1
|
A/C amplifier
|
Inspect the continuity in the wiring harness between climate control unit terminal I and A/C amplifier terminal 1R.
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.
|
Continuity
|
• A/C amplifier
• Related wiring harness
|
|
J
|
MS-CAN_H
|
CAN related module
|
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.
|
• Related wiring harness
|
|
|
K
|
Serial signal 2
|
A/C amplifier
|
Inspect the continuity in the wiring harness between climate control unit terminal K and A/C amplifier terminal 1P.
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.
|
Continuity
|
• A/C amplifier
• Related wiring harness
|
|
L
|
MS-CAN_L
|
CAN related module
|
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.
|
• Related wiring harness
|
|