7B-69 Air Conditioning System: Automatic Type
Reference Waveform
NOTE
The shape of waveform varies with engine
coolant temperature.
Waveform at 0
°
C (32
°
F)
Waveform at 40
°
C (104
°
F)
Waveform at 80
°
C (176
°
F)
G77-21 YEL/GRN
Air intake actuator
(FRESH AIR)
about 0.0 V Ignition switch ON, Air intake switch OFF position
10.0 – 14.0 V Ignition switch ON, Air intake switch ON position
G77-22
YEL/RED
Air intake actuator
(RECIRCULATION AIR)
about 0.0 V Ignition switch ON, Air intake switch ON position
10.0 – 14.0 V Ignition switch ON, Air intake switch OFF position
G77-23
—
—
—
—
G77-24 YEL/GRN ECT signal
Reference
waveform
No.1
Ignition switch ON
G77-25 BLK/ORN Ground
about 0.0 V Full-time
G77-26 RED/WHT
Air flow control actuator
and Temperature control
actuator
about 5.0 V Ignition switch ON
G77-27
YEL
Sunload sensor
G77-28
WHT
Temperature control
actuator position sensor
about 4.0 V
Ignition switch ON, Temperature selector MAX COOL
position
about 1.0 V
Ignition switch ON, Temperature selector MAX HOT
position
G77-29
YEL/BLK
Outside temperature
sensor
0 – 2.0 V
Ignition switch ON, outside temperature sensor
above 10
°
C (50
°
F)
1.5 – 14.0 V
Ignition switch ON, outside temperature sensor below
25
°
C (77
°
F)
G77-30 WHT/BLK
A/C evaporator outlet
sensor
about 2.12 V
Ignition switch ON, Engine coolant temperature 4.3
°
C (39.74
°
F)
about 2.07 V
Ignition switch ON, Engine coolant temperature 5.5
°
C (41.9
°
F)
Terminal Wire Color
Circuit
Normal
Voltage
Condition
Measurement terminal G77-24 to G77-25
Oscilloscope setting
CH1: 5 V / DIV
TIME: 200 ms / DIV
Measurement condition Ignition switch turned ON
I3RH0A722018-01
I3RH0A722019-01
I3RH0A722020-01
Содержание Liana RH413
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