YH4
GRAND
VITARA
7. SDM
7-1. “AIR BAG” warning lamp driver circuit
4. “AIR BAG” warning lamp in combination meter
5. “AIR BAG” fuse in “AIR BAG” fuse box
6. Connection detection pin
1. From main fuse
2. Ignition switch
3. “IG
.
COIL METER” fuse in J/B
: Air bag harness
10B-16 AIR BAG SYSTEM
TABLE A – “AIR BAG” WARNING LAMP COMES “ON” STEADY (Page 1 of 2)
CAUTION:
When measurements are requested in this chart use specified digital multimeter with correct terminal
adapter from special tool (Connector test adapter kit).
When a check for proper connection is requested refer to “Intermittent and Poor Connections” in this
section.
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.
STEP ACTION YES NO
1 1) Ignition switch OFF.
2) Remove and inspect “AIR BAG” fuse.
3) Is fuse good?
Go to step 2. “BI/R” wire short to ground.
After repair, replace
“AIR BAG” fuse.
2 1) Disconnect SDM.
2) Check proper connection to SDM at
terminal “A16”.
3) If OK then check voltage between “A16”
terminal of SDM connector and body
ground with ignition switch ON.
4) Is it 8 V or more?
Go to step 3. “BI/R” wire (between
“AIR BAG” fuse and SDM
connector) open “BI/B” wire
(between ignition switch and
“AIR BAG” fuse) open or short
to ground.
3 1) Disconnect 16p connector from
combination meter, referring to Section
8C.
2) Check resistance between “A5” terminal
of SDM connector and body ground.
3) Is resistance 1 k or more?
Substitute a known-
good SDM and
recheck.
“BI” wire (between combina-
tion meter and SDM connec-
tor) short to ground.
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