Suzuki GRAND VITARA Owner's Manual page 1230

8B-28 Air Bag System:
Step
3 1) With ignition switch OFF, disconnect on connector "G01"
junction block assembly.
2) Check proper connection at "G01-15" terminal.
3) If OK, turn ignition switch ON and then check voltage
between "G01-15" terminal and body ground.
Is voltage 8 V or more?
4 1) With ignition switch OFF, reconnect SDM connector.
With ignition switch ON, does DTC B1017 exist?
NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components and ensure all components are properly mounted.
• Clear DTCs referring to "DTC Clearance: ", if any.
• Repeat "Air Bag Diagnostic System Check: " to confirm that the trouble has been corrected.
Action
"G01-15"
I5JB0A820024-01
Yes
Go to Step 4.
Substitute a known-
good SDM and recheck.
No
Check circuit from
battery to "G01"
connector and charging
system.
Check charging system
and repair as necessary
referring to "Generator
Test (Undercharged
Battery Check): in
Section 1J".