Suzuki GRAND VITARA Owner's Manual page 1165

HVAC Control Module Voltage Table
Wire
Terminal
color
G52-1 PPL/RED Power supply
Electric power source
G52-2 WHT
for back-up
Serial communication
G52-3 PPL/WHT line of data link
connector
G52-4 RED/YEL Illumination switch
G52-5 RED/GRN Illumination ground
G52-6 PNK/BLK Alarm indicator
Rear defogger driving
G52-8 BLK/RED
signal
Serial communication
G52-10 YEL/RED
line from BCM
Serial communication
G52-11 PNK/GRN
line to BCM
Ground for sunload
G52-12 YEL
sensor
G52-13 BLK/RED Ground for sensors
Output of 5 V power
G52-14 RED/WHT source for position
sensor of actuators
Blower motor control
G52-15 RED/BLK
voltage feedback
G52-16 PPL/GRN Blower motor controller
Ground for HVAC
G52-17 BLK
control module
G52-18 PNK Sunload sensor signal
Circuit Normal value
10 – 14 V
10 – 14 V
10 – 14 V
0 – 1 V
10 – 14 V
0 – 1 V
—
10 – 14 V
0 – 1 V
Refer to "Inspection of BCM and its Circuits: in Section 10B".
Refer to "Reference waveform No. 1: ".
0 – 1 V
0 – 1 V
4 – 6 V
Approx. 12 V
Approx. 8 V
Approx. 7 V
Approx. 5.5 V
Approx. 4.5 V
Approx. 3 V
Approx. 1.3 V
Approx. 0.3 V
Less than 0.3 V
0 – 1 V
Approx. 4.2 V
Approx. 5.7 V
0 – 1 V
Approx. 3 V
Approx. 5 V
Air Conditioning System:
Condition
Ignition switch turned ON.
Constantly.
Ignition switch turned ON.
Ignition switch turned ON, lighting switch OFF
position.
Ignition switch turned ON, lighting switch ON
position.
Constantly.
Ignition switch turned ON, rear defogger switch ON.
Ignition switch turned ON, rear defogger switch OFF.
Constantly.
Constantly.
Ignition switch turned ON.
Ignition switch turned ON, blower speed selector
OFF.
Ignition switch turned ON, blower speed selector 1st
position.
Ignition switch turned ON, blower speed selector 2nd
position.
Ignition switch turned ON, blower speed selector 3rd
position.
Ignition switch turned ON, blower speed selector 4th
position.
Ignition switch turned ON, blower speed selector 5th
position.
Ignition switch turned ON, blower speed selector 6th
position.
Ignition switch turned ON, blower speed selector 7th
position.
Ignition switch turned ON, blower speed selector 8th
position.
Ignition switch turned ON, blower speed selector
OFF.
Ignition switch turned ON, blower speed selector 1st
– 7th position.
Ignition switch turned ON, blower speed selector 8th
position.
Constantly.
Ignition switch turned ON, amount of insolation is
500 W/m 2
Ignition switch turned ON, amount of insolation is 0
W/m 2
7B-56
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