Suzuki Liana RH413 Service Manual page 908

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