Suzuki GA413, Service Manual

Page: 722 / 1246

10B-28 AIR BAG SYSTEM
DIAGNOSTIC FLOW TABLE
DTC B1021:
STEP ACTION YES NO
1 1) With ignition switch OFF, disconnect contact coil
connector located near the base of the steering
column.
2) Check proper connection to contact coil at termi-
nals in “B” connector.
3) If OK then connect Special Tool (B) to contact
coil connector disconnected at step 1).
4) With ignition switch ON, is DTC B1021 current?
Go to step 2. Go to step 3.
2 1) With ignition switch OFF, disconnect SDM.
2) Check proper connection to SDM at terminals
“A9” and “A10”.
3) If OK then measure resistance between “A9”
and “A10” terminals with connected Special Tool
(B).
4) Is resistance 4.5 or less?
Substitute a known-
good SDM and re-
check. Repair high resistance
or open in “G” or “G/R”
wire circuit.
3 1) With ignition switch OFF, disconnect Special
Tool (B) then reconnect contact coil connector
located near the base of the steering column.
2) Remove driver air bag (inflator) module from
steering wheel (Refer to DRIVER AIR BAG (IN-
FLATOR) MODULE in SECTION 3C).
3) Check proper connection to driver air bag (infla-
tor) module at terminals in “C” connector.
4) If OK then connect Special Tool (B) to “C” con-
nector.
5) With ignition switch ON, is DTC B1021 current?
1) Ignition switch OFF.
2) Replace contact
coil assembly (Re-
fer to COMBINA-
TION SWITCH/
CONTACT COIL
AND COMBINA-
TION SWITCH AS-
SEMBLY in SEC-
TION 3C).
1) Ignition switch OFF.
2) Replace driver air
bag (inflator) module
(Refer to DRIVER
AIR BAG (INFLA-
TOR) MODULE in
SECTION 3C).
Fig. for STEP 1 and 2
Fig. for STEP 2 Fig. for STEP 3
Special Tool
(A): 09932-76010
(B): 09932-75010
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 DTC CLEARANCE), if any.
3) Repeat AIR BAG DIAGNOSTIC SYSTEM CHECK to confirm that the trouble has been corrected.