Suzuki RA410 Manual page 726

DIAGNOSTIC FLOW TABLE:
DTC 31 – POWER SOURCE VOLTAGE HIGH
STEP
1 1) With ignition switch OFF, disconnect SDM
("A") connector.
2) Check proper connection to SDM at "A4"
terminal.
3) If OK then ignition switch ON, and then
check voltage from "A4" terminal on SDM
("A") connector to body ground.
4) Is voltage 14 V or less?
2 1) With ignition switch OFF, reconnect SDM
("A") connector.
2) With ignition switch ON, is DTC 31 current?
Fig. for Step 1
NOTE:
Upon completion of inspection and repair work, perform following items.
1) Reconnect all air bag system components, ensure all components are properly mounted.
2) Clear diagnostic trouble codes (Refer to DIAGNOSTIC TROUBLE CODE (DTC) CLEARANCE), if any.
3) Repeat AIR BAG DIAGNOSTIC SYSTEM CHECK to confirm that the trouble has been corrected.
ACTION
"A4"
YES
Go to Step 2.
Substitute a known-good
SDM and recheck.
Special Tool
(A): 09932-76010
AIR BAG SYSTEM 10B-31
NO
Check Charging System
and repair as necessary.
(Refer to DIAGNOSIS in
SECTION 6H)
Check Charging System
and repair as necessary.
(Refer to DIAGNOSIS in
SECTION 6H)