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Suzuki SX4 Service Manual page 1068

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7B-74 Air Conditioning System: Automatic Type
Terminal Wire Color
Electric load signal for
G20-8
BLU/WHT
blower motor
Evaporator temperature
G20-9
WHT/BLK
sensor signal
Inside air temperature
G20-10
PNK/BLK
sensor signal
G20-11
Output of 5 V power
source for air flow control
G20-12
WHT
actuator position sensor
and temperature control
actuator position sensor
Serial communication line
G20-13
YEL
of BCM
G20-14
Air flow control actuator
G20-15
BRN/YEL
(FACE)
Air flow control actuator
G20-16 BRN/WHT
(DEF)
Air intake actuator
G20-17
GRN
(FRESH AIR)
Air intake actuator
G20-18
RED
(RECIRCULATION AIR)
Air intake actuator (MIX
G20-19 GRN/RED
AIR)
G20-20
G20-21 GRN/WHT A/C switch signal
G20-22
RED/BLK Electric power source
Ground for HVAC control
G20-23
BLK/ORN
module
G20-24
ORN
Ground for sensors
Normal
Circuit
Voltage
10 – 14 V
0 – 2 V
Approx. 2.6 V
Approx. 1.7 V
Approx. 1.0 V
Approx. 2.5 V
Approx. 3.7 V
4 – 6 V
Refer to "Reference waveform No. 2: Automatic Type".
10 – 14 V
0 – 1 V
10 – 14 V
0 – 1 V
0 – 1 V
10 – 14 V
0 – 1 V
10 – 14 V
10 – 14 V
0 – 1 V
Refer to "Reference waveform No. 1: Automatic Type".
10 – 14 V
Below 0.5 V Ignition switch turned ON
Below 0.5 V Ignition switch turned ON
Condition
• Ignition switch turned ON, blower speed selector
OFF or 1st position
• Ignition switch turned ON, blower speed selector
from 1st to 2nd position
• Ignition switch turned ON, blower speed selector
between 3rd and HIGH position
• Ignition switch turned ON, blower speed selector
from 3rd to 2nd position
Ignition switch turned ON, evaporator temperature 0
°C (32 °F)
Ignition switch turned ON, evaporator temperature
15 °C (59 °F)
Ignition switch turned ON, evaporator temperature
30 °C (86 °F)
Ignition switch turned ON, room temperature 25 °C
(77 °F)
Ignition switch turned ON, room temperature 0 °C
(32 °F)
Ignition switch turned ON
Ignition switch turned ON, air flow control actuator is
working in operation from "DEF" to "FACE" position
Ignition switch turned ON, except the above
condition
Ignition switch turned ON, air flow control actuator is
working in operation from "FACE" to "DEF" position
Ignition switch turned ON, except the above
condition
Ignition switch turned ON, air intake selector "FRE"
position
Ignition switch turned ON, air intake selector "REC"
position
Ignition switch turned ON, air intake selector "REC"
position
Ignition switch turned ON, air intake selector "FRE"
position
Ignition switch turned ON, air intake selector "FRE"
or "REC" position
Ignition switch turned ON, air intake selector is
working in operation from "FRE" to "REC" or "REC"
to "FRE" position
Ignition switch turned ON

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