1999 SUZUKI GRAND VITARA Code check

YH4
GRAND
VITARA
(A)STEERING WHEEL
AIR BAG SYSTEM 10B-31
CODE 19 ± PASSENGER AIR BAG INITIATOR CIRCUIT SHORT TO POWER CIRCUIT
(Page 2 of 2)
NOTE:
Before executing items in this table, be sure to perform ªAir Bag Diagnostic Check Flow Tableº.
STEP
ACTIONYESNO
11) With ignition switch OFF, disconnect
passenger air bag (inflator) module
connector behind the glove box.
2) Check proper connection to passenger
air bag (inflator) module at terminals in ªBº
connector.
3) If OK then connect Special Tool (B) to
passenger air bag (inflator) module
connector disconnected at the step 1).
4) With ignition switch ON, is DTC 19
current?Go to step 2.1) Ignition switch OFF.
2) Replace passenger air
bag (inflator) module.
21) With ignition switch OFF, disconnect
Special Tool (B) and SDM.
2) Measure voltage from ªA3º terminal to
body ground.
3) With ignition switch ON, is voltage 1 V or
less?Substitute a known-good
SDM and recheck.Repair short from ªYº or
ªY/Rº wire circuit to power
circuit.
Fig. for STEP 1 and 2 Fig. for STEP 2
Special Tool
(A): 09932-76010
(B): 09932-75010
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) Clear diagnostic trouble codes (refer to ªDiagnostic Trouble Code (DTC) Clearanceº), if any.
3) Repeat ªAir Bag Diagnostic System Check Flow Tableº, referring to p.10B-11 to confirm that the trouble
has been corrected.

YH4
GRAND
VITARA
: Shorting bar
: Air bag harness
1. SDM
2. Contact coil assembly
3. Driver air bag (inflator) module
10B-32 AIR BAG SYSTEM
CODE 21 ± DRIVER AIR BAG INITIATOR CIRCUIT RESISTANCE HIGH (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 ªIntermittents 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.
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 ªAir Bag Diagnostic Check Flow Tableº.
STEP
ACTIONYESNO
11) 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 ªCº 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?Go to step 2.Go to step 3 on the
next page.
21) With ignition switch OFF, disconnect SDM.
2) Check proper connection to SDM at terminals
ªA6º and ªA7º.
3) Release shorting bar in SDM connector,
referring to the figure below.
4) If OK then measure resistance between ªA6º
and ªA7º terminals with connected Special Tool
(B).
5) Is resistance 3.5
or less?Substitute a known-
good SDM and
recheck.Repair high resistance
or open in ªGº or ªG/Rº
wire circuit.

YH4
GRAND
VITARA
AIR BAG SYSTEM 10B-33
BASE OF COLUMN1. Paper
STEERING
WHEEL
CODE 21 ± DRIVER AIR BAG INITIATOR CIRCUIT RESISTANCE HIGH (Page 2 of 2)
STEPACTIONYESNO
31) 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
(inflator) module at terminals in ªDº connector.
4) If OK then connect Special Tool (B) to driver
air bag (inflator) module disconnected at step 2).
5) With ignition switch ON, is DTC 21 current?1) Ignition switch OFF.
2) Replace contact coil
assembly (Refer to
SECTION 3C1).1) Ignition switch OFF.
2) Replace driver air
bag (inflator)
module (Refer to
SECTION 3C1).
Fig. for STEP 1 and 2 Fig. for STEP 2
Fig. for STEP 3
Special Tool
(A): 09932-76010
(B): 09932-75010
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) Clear diagnostic trouble codes (refer to ªDiagnostic Trouble Code (DTC) Clearanceº), if any.
3) Repeat ªAir Bag Diagnostic System Check Flow Tableº, referring to p.10B-11 to confirm that the trouble
has been corrected.

YH4
GRAND
VITARA
: Shorting bar
: Air bag harness
1. SDM
2. Contact coil assembly
3. Driver air bag (inflator) module
10B-34 AIR BAG SYSTEM
CODE 22 ± DRIVER AIR BAG INITIATOR CIRCUIT RESISTANCE LOW (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.
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 below a specified value for specified time.
NOTE:
Before executing items in this table, be sure to perform ªAir Bag Diagnostic Check Flow Tableº.
STEP
ACTIONYESNO
11) 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 ªCº connector.
3) If OK then connect Special Tool (B) to contact
coil connector disconnected at step 1).
4) With ignition switch ON, is DTC 22 current?Go to step 2.Go to step 3 on the
next page.
21) With ignition switch OFF, disconnect SDM.
2) Check proper connection to SDM at terminals
ªA6º and ªA7º.
3) Release shorting bar in SDM connector,
referring to the figure below.
4) If OK then measure resistance between ªA6º
and ªA7º terminals with connected Special Tool
(B).
5) Is resistance 1.7
or more?Substitute a known-
good SDM and
recheck.Repair short from ªGº
wire circuit to ªG/Rº wire
circuit or from ªGº or
ªG/Rº wire circuit to
other wire circuit.

YH4
GRAND
VITARA
AIR BAG SYSTEM 10B-35
BASE OF COLUMN1. Paper
STEERING
WHEEL
CODE 22 ± DRIVER AIR BAG INITIATOR CIRCUIT RESISTANCE LOW (Page 2 of 2)
STEPACTIONYESNO
31) 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
(inflator) module at terminals in ªDº connector.
4) If OK then connect Special Tool (B) to driver air
bag (inflator) module disconnected at step 2).
5) With ignition switch ON, is DTC 22 current?1) Ignition switch OFF.
2) Replace contact coil
assembly (Refer to
SECTION 3C1).1) Ignition switch OFF.
2) Replace driver air
bag (inflator)
module (Refer to
SECTION 3C1).
Fig. for STEP 1 and 2 Fig. for STEP 2
Fig. for STEP 3
Special Tool
(A): 09932-76010
(B): 09932-75010
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) Clear diagnostic trouble codes (refer to ªDiagnostic Trouble Code (DTC) Clearanceº), if any.
3) Repeat ªAir Bag Diagnostic System Check Flow Tableº, referring to p.10B-11 to confirm that the trouble
has been corrected.

YH4
GRAND
VITARA
: Shorting bar
: Air bag harness
1. SDM
2. Contact coil assembly
3. Driver air bag (inflator) module
10B-36 AIR BAG SYSTEM
CODE 24 ±DRIVER AIR BAG INITIATOR CIRCUIT SHORT TO GROUND (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.
DTC WILL SET WHEN:
The voltage measured at driver air bag initiator circuit is below a specified value for specified time.
NOTE:
Before executing items in this table, be sure to perform ªAir Bag Diagnostic Check Flow Tableº.
STEP
ACTIONYESNO
11) 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 ªCº connector.
3) If OK then connect Special Tool (B) to contact
coil connector disconnected at step 1).
4) With ignition switch ON, is DTC 24 current?Go to step 2.Go to step 3 on the
next page.
21) With ignition switch OFF, disconnect Special
Tool (B) and SDM.
2) Measure resistance between ªA6º and ªA10º
terminals.
3) Is resistance 1 k
or more?Substitute a known-
good SDM and recheck.Repair short from ªGº or
ªG/Rº wire circuit to
ground.

YH4
GRAND
VITARA
AIR BAG SYSTEM 10B-37
(A)BASE OF COLUMN
STEERING
WHEEL
CODE 24 ±DRIVER AIR BAG INITIATOR CIRCUIT SHORT TO GROUND (Page 2 of 2)
STEPACTIONYESNO
31) With ignition switch OFF, disconnect Special
Tool (B) then reconnect contact coil connec-
tor 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
(inflator) module at terminals in ªDº
connector.
4) If OK then connect Special Tool (B) to driver
air bag (inflator) module disconnected at
step 2).
5) With ignition switch ON, is DTC 24 current?1) Ignition switch OFF.
2) Replace contact coil
assembly (Refer to
SECTION 3C1).1) Ignition switch OFF.
2) Replace driver air bag
(inflator) module
(Refer to SECTION
3C1).
Fig. for STEP 1 and 2 Fig. for STEP 2
Fig. for STEP 3
Special Tool
(A): 09932-76010
(B): 09932-75010
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) Clear diagnostic trouble codes (refer to ªDiagnostic Trouble Code (DTC) Clearanceº), if any.
3) Repeat ªAir Bag Diagnostic System Check Flow Tableº, referring to p.10B-11 to confirm that the trouble
has been corrected.

YH4
GRAND
VITARA
: Shorting bar
: Air bag harness
1. From ignition switch
2. ªAIR BAGº fuse in ªAIR BAGº fuse box
3. SDM
4. Contact coil assembly
5. Driver air bag (inflator) module
10B-38 AIR BAG SYSTEM
CODE 25 ± DRIVER AIR BAG INITIATOR CIRCUIT SHORT TO POWER 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.
DTC WILL SET WHEN:
The voltage measured at driver air bag initiator circuit is above a specified value for specified time.
NOTE:
Before executing items in this table, be sure to perform ªAir Bag Diagnostic Check Flow Tableº.
STEP
ACTIONYESNO
11) 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 ªCº connector.
3) If OK then connect Special Tool (B) to contact
coil connector disconnected at step 1).
4) With ignition switch ON, is DTC 25 current?Go to step 2.Go to step 3 on the
next page.
21) With ignition switch OFF, disconnect Special
Tool (B) and SDM.
2) Measure voltage from ªA7º terminal to body
ground.
3) With ignition switch ON, is voltage 1 V or less?Substitute a known-
good SDM and
recheck.Repair short from ªGº or
ªG/Rº wire circuit to
power circuit.