2001 SUZUKI GRAND VITARA ignition

AIR BAG SYSTEM 10B-39
[A] Fig. for STEP 1/[B] Fig. for STEP 2/[C] Fig. for STEP 3
Special tool
(A) : 09932-75020 3 1) Measure voltage from “Q01-13” terminal to
body ground and “Q01-14” terminal to body
ground, or from “Q01-18” terminal to body
ground and “Q01-19” terminal to body
ground.
With ignition switch ON, are they 1V or less?Substitute a known-good
SDM and recheck.Repair short from “ORN/
GRN” or “ORN/BLU” wire
circuit (between forward
sensor and SDM) to
power circuit, or from
“YEL/GRN” or “YEL/BLU”
wire circuit (between for-
ward sensor and SDM) to
power circuit. Step Action Yes No
NOTE:
Upon completion of inspection and repair work, perform following items.
Reconnect all air bag system components, ensure all components are properly mounted.
Clear diagnostic trouble codes (Refer to DTC CLEARANCE), if any.
Repeat AIR BAG DIAGNOSTIC SYSTEM CHECK to confirm that the trouble has been corrected.

10B-40 AIR BAG SYSTEM
DTC B1041 – Driver Pretensioner Initiator Circuit Resistance High
DTC B1042 – Driver Pretensioner Initiator Circuit Resistance Low
DTC B1043 – Driver Pretensioner Initiator Circuit Short to Ground
DTC B1044 – Driver Pretensioner Initiator Circuit Short to Power Circuit
DTC B1045 – Passenger Pretensioner Initiator Circuit Resistance High
DTC B1046 – Passenger Pretensioner Initiator Circuit Resistance Low
DTC B1047 – Passenger Pretensioner Initiator Circuit Short to Ground
DTC B1048 – Passenger Pretensioner Initiator Circuit Short to Power Circuit
WIRING DIAGRAM
[A] : Shorting bar 2. Ignition switch 5. Driver seat belt pretensioner
[B] : Air bag harness 3.“AIR BAG” fuse 6. Passenger seat belt pretensioner
1. From main fuse 4. SDM 7. Ground for air bag system
PNK
WHT
BRN
LT GRN
“Q11” “Q12”
Q01-12
Q01-11
Q01-5
Q01-6 PP- PP+ DP- DP+
“Q01”
5
6 [A]
[B]1
2BLU/BLK
BLU/RED
3
7
BLK
“Q01” Q01-4
Q01-17IG
GND4
CAUTION:
Be sure to perform AIR BAG DIAGNOSTIC SYSTEM CHECK before starting diagnosis according to
flow table.
When measurement of resistance or voltage is required in this table, use a tester along with a cor-
rect terminal adapter from special tool (Connector test adapter kit).
When a check for proper connection is required, refer to INTERMITTENT AND POOR CONNEC-
TIONS in this section.
If there is open circuit in the air bag wire harness, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.

AIR BAG SYSTEM 10B-41
DTC WILL SET WHEN
DTC B1041 and B1045 :
The resistance of driver or passenger seat belt pretensioner initiator circuit is above a specified value for speci-
fied time.
DTC B1042 and B1046 :
The resistance of driver or passenger seat belt pretensioner initiator circuit is below a specified value for speci-
fied time.
DTC B1043 and B1047 :
The voltage measured at driver or passenger seat belt pretensioner initiator circuit is below a specified value for
specified time.
DTC B1044 and B1048 :
The voltage measured at driver or passenger seat belt pretensioner initiator circuit is above a specified value for
specified time.
TABLE TEST DESCRIPTION
DTC B1041, B1042, B1043, B1044, B1045, B1046, B1047 and B1048 :
STEP 1 : Check whether malfunction is in seat belt pretensioner.
STEP 2 : Check seat belt pretensioner initiator circuit in air bag harness.
DIAGNOSTIC FLOW TABLE
DTC B1041 and B1045 :
Step Action Yes No
1 1) With ignition switch OFF, remove center
pillar inner garnish of applicable side then
disconnect seat belt pretensioner connec-
tor.
2) Check proper connection to applicable
seat belt pretensioner at terminals in
“Q11” or “Q12” connector.
3) If OK then connect Special Tool (B) to
seat belt pretensioner connector discon-
nected at the step 1.
With ignition switch ON, is DTC B1041 or
B1045 still current?Go to step 2. Ignition switch OFF.
Replace seat belt preten-
sioner (Refer to Section
10A).
2 1) With ignition switch OFF, disconnect SDM
connector.
2) Check proper connection to SDM at termi-
nals “Q01-11” and “Q01-12” or “Q01-6”
and “Q01-5”.
3) If OK then measure resistance between
“Q01-11” and “Q01-12” terminals or “Q01-
6” and “Q01-5” terminals with connected
Special Tool (B).
Is resistance 4.5 Ω or less?Substitute a known-
good SDM and recheck.DTC B1041 :
Repair high resistance or
open in “PNK” or “WHT” wire
circuit.
DTC B1045 :
Repair high resistance or
open in “BRN” or “LT GRN”
wire circuit.

10B-42 AIR BAG SYSTEM
Fig. for STEP 1 and 2
Fig. for STEP 2
Special tool
(A) : 09932-75020
(B) : 09932-75010
DTC B1042 and B1046 :
1. Pretensioner harness
[A] : For DTC B1041
[B] : For DTC B1045
NOTE:
Upon completion of inspection and repair work, perform following items.
Reconnect all air bag system components, ensure all components are properly mounted.
Clear diagnostic trouble codes (Refer to DTC CLEARANCE), if any.
Repeat AIR BAG DIAGNOSTIC SYSTEM CHECK to confirm that the trouble has been corrected.
Step Action Yes No
1 1) With ignition switch OFF, remove center pil-
lar inner garnish of applicable side then dis-
connect seat belt pretensioner connector.
2) Check proper connection to applicable seat
belt pretensioner at terminals in “Q11” or
“Q12” connector.
3) If OK then connect Special Tool (B) to seat
belt pretensioner connector disconnected at
the step 1.
With ignition switch ON, is DTC B1042 or
B1046 still current?Go to step 2. Ignition switch OFF.
Replace seat belt preten-
sioner (Refer to Section
10A).

AIR BAG SYSTEM 10B-43
Fig. for STEP 1 and 2
Fig. for STEP 2
Special tool
(A) : 09932-75020
(B) : 09932-75010 2 1) With ignition switch OFF, disconnect SDM.
2) Check proper connection to SDM at termi-
nals “Q01-11” and “Q01-12” or “Q01-6” and
“Q01-5”.
3) If OK then measure resistance between
“Q01-11” and “Q01-12” terminals or “Q01-
06” and “Q01-05” terminals with connected
Special Tool (B).
Is resistance 1.4 Ω or more?Substitute a known-good
SDM and recheck.DTC B1042 :
Repair short from “PNK”
wire circuit to “WHT” wire
circuit or from “PNK” or
“WHT” wire circuit to other
wire circuit.
DTC B1046 :
Repair short from “BRN”
wire circuit to “LT GRN”
wire circuit or from “BRN”
or “LT GRN” wire circuit to
other wire circuit. Step Action Yes No
1. Pretensioner harness
[A] : For DTC B1042
[B] : For DTC B1046
NOTE:
Upon completion of inspection and repair work, perform following items.
Reconnect all air bag system components, ensure all components are properly mounted.
Clear diagnostic trouble codes (Refer to DTC CLEARANCE), if any.
Repeat AIR BAG DIAGNOSTIC SYSTEM CHECK to confirm that the trouble has been corrected.

10B-44 AIR BAG SYSTEM
DTC B1043 and B1047 :
Fig. for STEP 1 and 2
Fig. for STEP 2
Special tool
(A) : 09932-75020
(B) : 09932-75010 Step Action Yes No
1 1) With ignition switch OFF, remove center pil-
lar inner garnish of applicable side then dis-
connect seat belt pretensioner connector.
2) Check proper connection to applicable seat
belt pretensioner at terminals in “Q11” or
“Q12” connector.
3) If OK then connect Special Tool (B) to seat
belt pretensioner connector disconnected at
the step 1.
With ignition switch ON, is DTC B1043 or
B1047 still current?Go to step 2. Ignition switch OFF.
Replace seat belt pretensioner
(Refer to Section 10A).
2 1) With ignition switch OFF, disconnect Spe-
cial Tool (B) and SDM.
2) Measure resistance between “Q01-11” or
“Q01-6” and body ground.
Is circuit open?Substitute a
known-good SDM
and recheck.DTC B1043 :
Repair short “PNK” or “WHT” wire
circuit to ground.
DTC B1047 :
Repair short from “BRN” or “LT
GRN” wire circuit to ground.
1. Pretensioner harness
[A] : For DTC B1043
[B] : For DTC B1047

AIR BAG SYSTEM 10B-45
DTC B1044 and B1048 :
Fig. for STEP 1 and 2NOTE:
Upon completion of inspection and repair work, perform following items.
Reconnect all air bag system components, ensure all components are properly mounted.
Clear diagnostic trouble codes (Refer to DTC CLEARANCE), if any.
Repeat AIR BAG DIAGNOSTIC SYSTEM CHECK to confirm that the trouble has been corrected.
Step Action Yes No
1 1) With ignition switch OFF, remove center
pillar inner garnish of applicable side then
disconnect seat belt pretensioner connec-
tor.
2) Check proper connection to applicable
seat belt pretensioner at terminals in
“Q11” or “Q12” connector.
3) If OK then connect Special Tool (B) to
seat belt pretensioner connector discon-
nected at the step 1.
With ignition switch ON, is DTC B1044 or
B1048 still current?Go to step 2. Ignition switch OFF.
Replace seat belt preten-
sioner (Refer to Section
10A).
2 1) With ignition switch OFF, disconnect Spe-
cial Tool (B) and SDM.
2) Measure voltage from “Q01-12” or “Q01-
5” terminal to body ground.
With ignition switch ON, is voltage 1 V or
less?Substitute a known-
good SDM and recheck.DTC B1044 :
Repair short “PNK” or “WHT”
wire circuit to power circuit.
DTC B1048 :
Repair short from “BRN” or
“LT GRN” wire circuit to
power circuit.
1. Pretensioner harness

10B-46 AIR BAG SYSTEM
Fig. for STEP 2
Special tool
(A) : 09932-75020
(B) : 09932-75010
DTC B1051 – Frontal Crash Detected (System Activation Command Output-
ted)
DTC WILL SET WHEN
The SDM detects a frontal crash of sufficient force to warrant activation of the air bag system. (SDM outputs a
deployment command.)
TABLE TEST DESCRIPTION
STEP 1 : Check that DTC B1051 has been set although air bag has not been deployed.
STEP 2 : Check that DTC has been set due to failure of SDM.
[A] : For DTC B1044
[B] : For DTC B1048
NOTE:
Upon completion of inspection and repair work, perform following items.
Reconnect all air bag system components, ensure all components are properly mounted.
Clear diagnostic trouble codes (Refer to DTC CLEARANCE), if any.
Repeat AIR BAG DIAGNOSTIC SYSTEM CHECK to confirm that the trouble has been corrected.
NOTE:
Before executing items in this table, be sure to perform AIR BAG DIAGNOSTIC SYSTEM CHECK.
Step Action Yes No
1 1) Ignition switch OFF.
Has air bag deployed?Replace components and
perform inspections as
directed in “REPAIRS AND
INSPECTIONS REQUIRED
AFTER AN ACCIDENT”.Go to step 2.