Suzuki GRAND VITARA 2005 Service Manual page 724

10B-14 Body Electrical Control System:
NOTE
• As each terminal voltage is affected by the battery voltage, confirm that it is 11 V or more when
ignition switch is ON.
• Voltage with asterisk (*) can not be measured by voltmeter because it is pulse signal.
Check it with oscilloscope if necessary.
BCM connector "G30"
Terminal
G30-1 Power source (IG)
G30-2 Power source (ACC)
G30-3 Key reminder switch
Serial communication line for
G30-4
HVAC control module
Serial communication line for
G30-5 information display and HVAC
control module
G30-6 Rear wiper switch
G30-7 Rear wiper INT switch
G30-8
G30-9 Front fog light switch (if equipped)
G30-10 Lighting switch (HEAD)
G30-11 Lighting switch (CLEARANCE)
Ground for body electrical
G30-12
controller
G30-13
G30-14
G30-15
G30-16 Theft deterrent light
G30-17
G30-18
G30-19 Serial communication line of SDM
G30-20
G30-21
Circuit Normal voltage
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10 – 14 V Ignition switch is at ON position
Ignition switch is at any position other than ON
0 V
position
10 – 14 V Ignition switch is at ACC or ON position
Ignition switch is at any position other than ACC or
0 V
ON position
10 – 14 V Ignition key is inserted to ignition key cylinder
0 V Ignition key is pulled out from ignition key cylinder
*0 – 1 V
↑↓
Refer to "Reference waveform No. 1: "
10 – 14 V
*0 – 1V
↑↓
Refer to "Reference waveform No. 2: "
10 – 14 V
*0 – 1 V
↑↓
Refer to "Reference waveform No. 3: "
10 – 14 V
Ignition switch is at ON position and rear wiper
0 V
switch is at ON position
0 – 1 V
↑↓
Refer to "Reference waveform No. 3: "
10 – 14 V
Ignition switch is at ON position and rear wiper
0 V
switch is at INT position
—
Lighting switch is at CLEARANCE position and
10 – 14 V
front fog light switch is at ON position
Lighting switch is at CLEARANCE position and
0 V
front fog light switch is at OFF position
Lighting switch is at any position other than HEAD
10 – 14 V
position
0 V Lighting switch is at HEAD position
10 – 14 V Lighting switch is at OFF position
Lighting switch is at any position other than OFF
0 V
position
0 V Ignition switch is at each position
—
—
—
10 – 14 V Theft deterrent light is not lit up
0 V Theft deterrent light is lit up
—
—
*0 – 1 V
↑↓
Refer to "Reference waveform No. 4: "
4 – 6 V
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Condition
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