Suzuki Wagon R RB310 Supplementary Service Manual page 181

10B-28 AIR BAG SYSTEM
DIAGNOSTIC FLOW TABLE
DTC B1021 : Driver Air Bag Initiator Circuit Resistance High
Step
1 1) With ignition switch OFF, disconnect contact coil con-
nector "G65" behind steering wheel.
2) Check proper connection to contact coil at terminals
in "G65" connector.
3) If OK, then connect Special Tools (B) and (C) to con-
tact coil connector "G65" disconnected at step 1).
With ignition switch ON, is DTC B1021 current?
2 1) With ignition switch OFF, disconnect SDM connector
"G66".
2) Check proper connection to SDM at terminals "G66-
27" and "G66-26".
3) If OK, release shorting bar in SDM connector insert-
ing release tool (1) included in special tool (A).
4) Measure resistance between "G66-27" and "G66-26"
terminals with connected Special Tools (B) and (C) to
"G65" connector.
Is resistance 5.1 Ω or less?
3 1) With ignition switch OFF, disconnect Special Tools (B)
and (C) from "G65" connector, then reconnect contact
coil connector "G65" as it was.
2) Remove driver air bag (inflator) module from steering
wheel (Refer to DRIVER AIR BAG (INFLATOR) MOD-
ULE in Section 3C).
3) Check proper connection to driver air bag (inflator)
module at terminals in "Q08" connector.
4) If OK, then connect Special Tools (B) and (C) to "Q08"
connector.
With ignition switch ON, is DTC B1021 current?
[A]
(A)
"GRN/RED"
(B)
3
"GRN"
[A] : Fig. for STEP 1 and 2
[B] : Fig. for STEP 2
[C] : Fig. for STEP 3
Special tool
(A) : 09932-76010
(B) : 09932-75010
(C) : 09932-78310
Action
[B]
2
(C)
1. Release tool
2. SDM connector "G66"
3. Contact coil connector "G65"
Go to step 2.
Substitute a known-
good SDM and
recheck.
Ignition switch OFF.
Replace contact coil
assembly (Refer to
COMBINATION
SWITCH/CON-
TACT COIL AND
COMBINATION
SWITCH ASSEM-
BLY in Section 3).
1
(A)
"G66-26" "G66-27"
(A)
Yes No
Go to step 3.
Repair high resis-
tance or open in
"GRN/RED" or "GRN"
wire circuit.
Ignition switch OFF.
Replace driver air
bag (inflator) module
(Refer to DRIVER
AIR BAG (INFLA-
TOR) MODULE in
Section 3).
[C]
"Q08"