Code 21 - Driver Air Bag Initiator Circuit Resistance High - Suzuki sq-416-420-625 Service Manual

10B-32 AIR BAG SYSTEM
CODE 21 – DRIVER AIR BAG INITIATOR CIRCUIT RESISTANCE HIGH (Page 1 of 2)
1. SDM
2. Contact coil assembly
3. Driver air bag (inflator) module
CAUTION:
D When measurements are requested in this chart use specified digital multimeter with correct terminal
adapter from special tool (Connector test adapter kit).
D When a check for proper connection is requested refer to "Intermittents and Poor Connections" in
this section.
D When an open in air bag wire harness, damaged wire harness, connector or terminal is found, replace
wire harness, connectors and terminals as an assembly.
DTC WILL SET WHEN:
The combined resistance of the driver air bag (inflator) module, contact coil assembly, harness wiring and connec-
tor terminal contact is above a specified value for specified time.
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
terminals in "C" connector.
3) If OK then connect Special Tool (B) to contact
coil connector disconnected at step 1).
4) 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,
referring to the figure below.
4) If OK then measure resistance between "A6"
and "A7" terminals with connected Special Tool
(B).
5) Is resistance 3.5 f or less?
ACTION
: Shorting bar
: Air bag harness
YES
Go to step 2.
Substitute a known-
good SDM and
recheck.
NO
Go to step 3 on the
next page.
Repair high resistance
or open in "G" or "G/R"
wire circuit.