2000 SUZUKI GRAND VITARA ect

YH4
GRAND
VITARA
7. SDM
7-1. ªAIR BAGº warning lamp driver circuit 4. ªAIR BAGº warning lamp in combination meter
5. ªAIR BAGº fuse in ªAIR BAGº fuse box
6. Connection detection pin 1. From main fuse
2. Ignition switch
3. ªIG
.COIL METERº fuse in J/B: Air bag harness
10B-16 AIR BAG SYSTEM
TABLE A ± ªAIR BAGº WARNING LAMP COMES ªONº 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 ªIntermittent and Poor Connectionsº 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.
STEPACTIONYESNO
11) Ignition switch OFF.
2) Remove and inspect ªAIR BAGº fuse.
3) Is fuse good?Go to step 2.ªBI/Rº wire short to ground.
After repair, replace
ªAIR BAGº fuse.
21) Disconnect SDM.
2) Check proper connection to SDM at
terminal ªA16º.
3) If OK then check voltage between ªA16º
terminal of SDM connector and body
ground with ignition switch ON.
4) Is it 8 V or more?Go to step 3.ªBI/Rº wire (between
ªAIR BAGº fuse and SDM
connector) open ªBI/Bº wire
(between ignition switch and
ªAIR BAGº fuse) open or short
to ground.
31) Disconnect 16p connector from
combination meter, referring to Section
8C.
2) Check resistance between ªA5º terminal
of SDM connector and body ground.
3) Is resistance 1 k
or more?Substitute a known-
good SDM and
recheck.ªBIº wire (between combina-
tion meter and SDM connec-
tor) short to ground.

YH4
GRAND
VITARA
(A)ªA5º(A)
AIR BAG SYSTEM 10B-17
TABLE A ± ªAIR BAGº WARNING LAMP COMES ªONº STEADY (Page 2 of 2)
Fig. for STEP 2 Fig. for STEP 3
Special Tool
(A): 09932-76010
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) Repeat ªAir Bag Diagnostic System Check Flow Tableº, referring to p.10B-11 to confirm that the trouble
has been corrected.

YH4
GRAND
VITARA
7. SDM
7-1. ªAIR BAGº warning lamp driver circuit 4. ªAIR BAGº warning lamp in combination meter
5. ªAIR BAGº fuse in ªAIR BAGº fuse box
6. Connection detection pin 1. From main fuse
2. Ignition switch
3. ªIG
.COIL METERº fuse in J/B: Air bag harness
10B-18 AIR BAG SYSTEM
TABLE B ± ªAIR BAGº WARNING LAMP DOES NOT COME ªONº (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 ªIntermittent and Poor Connectionsº 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.
STEPACTIONYESNO
11) Set parking brake.
2) Note combination meter as ignition switch
is turned ON.
3) Does the ªBRAKEº indicator (warning lamp)
come ON?Go to step 2.ªB/Wº wire, ªIG.COIL
METERº fuse or J/B
(between ignition
switch and combination
meter) open or short to
ground.
21) With ignition switch OFF, disconnect SDM.
2) Check electrical connection check
mechanism (connection detection pin).
3) Is it in good condition?Go to step 3.Repair electrical
connection check
mechanism.
31) Disconnect SDM.
2) Check proper connection to SDM at
terminal ªA5º.
3) If OK then check voltage from ªA5º terminal of
SDM connector to body ground with ignition
switch ON.
4) Is it 9 V or more?Substitute a known-good
SDM and recheck.Go to step 4 on the
next page.

YH4
GRAND
VITARA
(A)ªA5º
1. Combination meter connector (16p)
2. ªY / Gº wire terminal1. Connection detection pin
AIR BAG SYSTEM 10B-19
TABLE B ± ªAIR BAGº WARNING LAMP DOES NOT COME ªONº (Page 2 of 2)
STEPACTIONYESNO
41) Remove combination meter, referring to
SECTION 8C.
2) Check proper connection to combination
meter at terminal for ªAIR BAGº warning lamp
and to SDM at terminal ªA5º.
3) If OK then check resistance between ªY / Gº
wire terminal of combination meter connector
(16p) and ªA5º terminal of SDM connector.
4) Is resistance 1
or less?Go to step 5.Repair high resistance
or open in ªBIº or ªY / Gº
wire circuit (between
combination meter and
SDM).
51) Measure voltage from ªA5º terminal of SDM
connector to body ground with ignition switch
ON.
2) Is it 9 V or more?Repair short from ªBIº or
ªY / Gº wire circuit
(between combination
meter and SDM) to
power circuit.Go to step 6.
61) Remove and inspect ªAIR BAGº bulb.
2) Is bulb good?Substitute a known-good
combination meter and
recheck.Replace bulb.
Fig. for STEP 2 Fig. for STEP 3 and 5
Fig. for STEP 4
Special Tool
(A): 09932-76010
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) Repeat ªAir Bag Diagnostic System Check Flow Tableº, referring to p.10B-11 to confirm that the trouble
has been corrected.

YH4
GRAND
VITARA
1. From main fuse
2. Ignition switch
3. ªIG
.COIL METERº fuse in J/B
4. ªAIR BAGº warning lamp in combination meter7. Connection detection pin
8. SDM
8-1. ªAIR BAGº warning lamp driver circuit -5. ªAIR BAGº fuse in ªAIR BAGº fuse box
-6. ªAIR BAGº monitor coupler
6-1. Diagnosis switch terminal : Air bag harness
6±1 6
10B-20 AIR BAG SYSTEM
TABLE C ± ªAIR BAGº WARNING LAMP FLASHES (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 ªIntermittent and Poor Connectionsº 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.
STEPACTIONYESNO
11) Check ªAIR BAGº monitor coupler.
2) Is it connected diagnosis switch terminal and
ground terminal in ªAIR BAGº monitor coupler
by service wire?Remove service wire.Go to step 2.
21) With ignition switch OFF, disconnect SDM.
2) Measure resistance between ªA8º terminal of
SDM connector and body ground.
3) Is resistance 1 k
or more?Substitute a known-good
SDM and recheck.Repair short from ªVº
wire circuit to ground.

YH4
GRAND
VITARA
(A)
AIR BAG SYSTEM 10B-21
TABLE C ± ªAIR BAGº WARNING LAMP FLASHES (Page 2 of 2)
Fig. for STEP 2
Special Tool
(A): 09932-76010
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) Repeat ªAir Bag Diagnostic System Check Flow Tableº, referring to p.10B-11 to confirm that the trouble
has been corrected.

YH4
GRAND
VITARA
1. From main fuse
2. Ignition switch
3. ªIG
.COIL METERº fuse in J/B
4. ªAIR BAGº warning lamp in combination lamp
5. ªAIR BAGº fuse in ªAIR BAGº fuse box6. DLC
7. To, ICM (if equipped)
8. Connection detection pin
9. SDM
9-1. ªAIR BAGº warning lamp driver circuit : Air bag harness
10B-22 AIR BAG SYSTEM
TABLE D ± SDM CANNOT COMMUNICATE THROUGH THE SERIAL DATA CIRCUIT
(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 ªIntermittent and Poor Connectionsº 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.
STEPACTIONYESNO
11) Make sure that scan tool (Tech 1) is free
from malfunction and correct cartridge for
air bag system is used.
2) Ignition switch OFF.
3) Check proper connection of scan tool
(Tech 1) to DLC.
4) Is connection in good condition?Go to step 2 on
next page.Properly connect scan
tool to DLC.

YH4
GRAND
VITARA
1. DLC
2. Scan tool1. ªW/Bº wire terminal
AIR BAG SYSTEM 10B-23
TABLE D ± SDM CANNOT COMMUNICATE THROUGH THE SERIAL DATA CIRCUIT
(Page 2 of 2)
STEPACTIONYESNO
21) Check if communication is possible by
trying communication with other
controller (ECM (or PCM), ICM or ABS
controller).
2) Is it possible to communicate with other
controller?Go to step 3.Repair open in common
section of serial data circuit
(ªW/Bº wire circuit) used by
all controllers or short to
ground or power circuit
which has occurred some-
where in serial data circuit
(ªW/Bº wire circuit).
31) With ignition switch OFF, disconnect
SDM and ªLamp, DLC and Monitor
Coupler Groundº (ªEº) connector.
2) Check proper connection at ªW/Bº wire
terminal for DLC in ªEº connector.
3) If OK, then check resistance between
ªW/Bº wire terminal in ªEº connector and
ªA4º terminal of SDM connector.
4) Is resistance 1
or less?Substitute a known-good
SDM and recheck.Repair high resistance or
open in ªW/Bº wire circuit
(in air bag harness).
Fig. for STEP 1 Fig. for STEP 3
Special Tool
(A): 09932-76010
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) Repeat ªAir Bag Diagnostic System Check Flow Tableº, referring to p.10B-11 to confirm that the trouble
has been corrected.