Suzuki Swift Sport 2004 Service & Repair Manual page 1059

Step
2 1) With ignition switch OFF, disconnect SDM connector.
2) Check proper connection to SDM at "L29-27" terminal.
3) If OK, turn ignition switch ON and then check voltage
between "L29-27" terminal on SDM connector and body
ground.
Special tool
(A): 09932-76010
"L29-27"
Is voltage 8 V or more?
3 1) With ignition switch OFF, disconnect on connector "L04"
junction block assembly.
2) Check proper connection at "L04-1" terminal.
3) If OK, turn ignition switch ON and then check voltage
between "L04-1" 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
(A)
I7RS0A820005-08
"L04-1"
I4RS0A820012-01
Air Bag System:
Yes
Go to Step 4.
Go to Step 4.
Substitute a known-
good SDM and recheck.
8B-21
No
Go to step 3.
Check circuit from
battery to "L04"
connector and charging
system.
Check charging system
and repair as necessary
referring to "Generator
Test (Undercharged
Battery Check) in
Section 1J".