Suzuki SY413 Service Manual page 2510

CODE 21 – DRIVER AIR BAG INITIATOR CIRCUIT RESISTANCE HIGH (Page 2 of 2)
NOTE:
Before executing items in this table, be sure to perform "AIR BAG DIAGNOSTIC CHECK FLOW TABLE".
STEP
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 ter-
minals in "C" connector.
3) If OK then connect special tool (B) to contact
coil connector disconnected at Step 1.
With ignition switch ON, is DTC 21 current?
2 1) With ignition switch OFF, disconnect SDM.
2) Check proper connection to SDM at terminals
"A6" and "A7".
3) Release shorting bar in SDM connector, refer-
ring to the figure below.
4) If OK then measure resistance between "A6"
and "A7" terminals with connected special tool
(B).
Is resistance 3.5 W or less?
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 Section 3C1).
3) Check proper connection to driver air bag (in-
flator) module at terminals in "D" connector.
4) If OK then connect special tool (B) to driver air
bag (inflator) module disconnected at Step 1.
With ignition switch ON, is DTC 21 current?
Fig. for STEP 1 and 2
Special Tool
(B): 09932-75010
1. "BASE OF COLUMN"
NOTE:
Upon completion of inspection and repair work, perform the following procedure.
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 FLOW TABLE" to confirm that the trouble has been
corrected.
ACTION
Fig. for STEP 2
1. Paper
Special Tool
(A): 09932-76010
YES
Go to Step 2.
Substitute a known-
good SDM and re-
check.
1) Ignition switch OFF.
2) Replace contact coil
assembly (Refer to
Section 3C1).
Fig. for STEP 3
1. "STEERING WHEEL"
AIR BAG SYSTEM 9J-41
NO
Go to Step 3.
Repair high resistance
or open in "G" or "G/R"
wire circuit.
1) Ignition switch OFF.
2) Replace driver air
bag (inflator) module
(Refer to Section
3C1).
Special Tool
(B): 09932-75010