Suzuki Grand Vitara JB627. Manual — part 300
8B-26 Air Bag System:
DTC B1017: Power Source Voltage Low
S6JB0B8204013
Wiring Diagram
Refer to “DTC B1016: Power Source Voltage High”.
CAUTION
!
Be sure to observe instructions under CAUTION in “Air Bag Diagnostic System Check Flow”.
DTC Will Set when
The power source voltage is below specified value for specified time.
Flow Test Description
Step 1: Check if voltage on battery is within normal range.
Step 2: Check if voltage applied to SDM is within normal range.
Step 3: Check if voltage applied to “L04” connector is within normal range.
Step 4: Check if DTC B1017 still exists.
DTC Troubleshooting
Step
Action
Yes
No
1
1) Measure voltage on battery.
Is voltage 11 V or more?
Go to Step 2.
Check charging system
and repair as necessary
referring to “Generator
Test (Undercharged
Battery Check) in
Section 1J”.
2
1) With ignition switch OFF, disconnect SDM connector.
2) Check proper connection to SDM at “G47-16” or “G46-
11” terminal.
3) If OK, turn ignition switch ON and then check voltage
between “G47-16” [A] or “G46-11” [B] terminal on SDM
connector and body ground.
Special tool
(A): 09932–76010
Is voltage 8 V or more?
Go to Step 4.
Go to Step 3.
(A)
[A]
[B]
“G46-11”
“G47-16”
I5JB0A820023-01
Air Bag System: 8B-27
NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components and ensure all components are properly mounted.
• Clear DTCs referring to “DTC Clearance”, if any.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.
3
1) With ignition switch OFF, disconnect on connector “G01”
junction block assembly.
2) Check proper connection at “G01-15” terminal.
3) If OK, turn ignition switch ON and then check voltage
between “G01-15” terminal and body ground.
Is voltage 8 V or more?
Go to Step 4.
Check circuit from
battery to “G01”
connector and charging
system.
4
1) With ignition switch OFF, reconnect SDM connector.
With ignition switch ON, does DTC B1017 exist?
Substitute a known-
good SDM and recheck.
Check charging system
and repair as necessary
referring to “Generator
Test (Undercharged
Battery Check) in
Section 1J”.
Step
Action
Yes
No
“G01-15”
I5JB0A820024-01
8B-28 Air Bag System:
DTC B1021: Air Bag Module Deployed
S6JB0B8204014
DTC Will Set when
The SDM detects a crash of sufficient force to warrant activation of the air bag system. (SDM outputs a deployment
command.)
Flow Test Description
Step 1: Check that DTC B1021 has been set although air bag has not been deployed.
Step 2: Check that DTC has been set due to failure of SDM.
NOTE
Before executing items in this flow, be sure to perform “Air Bag Diagnostic System Check”.
DTC Troubleshooting
NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components and ensure all components are properly mounted.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.
• Clear DTCs of BCM referring to “DTC Clearance in Section 10B”
Step
Action
Yes
No
1
1) Turn ignition switch OFF.
Has air bag deployed?
Replace components
and perform inspections
as directed in “Repair
and Inspection
Required after
Accident”.
Go to Step 2.
2
1) Inspect front of vehicle and undercarriage for signs of
impact.
Are there signs of impact?
Replace components
and perform inspections
as directed in “Repair
and Inspection
Required after
Accident”.
Substitute a known-
good SDM and recheck.
Air Bag System: 8B-29
DTC B1031: Driver Air Bag Initiator Circuit Resistance High
S6JB0B8204015
Wiring Diagram
CAUTION
!
Be sure to observe instructions under CAUTION in “Air Bag Diagnostic System Check Flow”.
DTC Will Set when
The combined resistance of the driver air bag (inflator) module, contact coil assembly, harness wiring and connector
terminal contact is above a specified value for specified time.
Flow Test Description
Step 1: Check whether malfunction is in contact coil and driver air bag (inflator) module or the others.
Step 2: Check driver air bag (inflator) module initiator circuit.
Step 3: Check whether malfunction is in contact coil or driver air bag (inflator) module.
BLK
G47-20 GND
“G47”
1
2
4
3
RED
BLK
RED
BLK/YEL
“G01”
G47-16
IG
[A]
GRN/RED
GRN
GRN/RED
GRN
“Q01”
G47-5
G47-6
D1+
D1-
[D] “G27”
[C] “G26”
G46-16 GND
“G46”
G46-11
IG
[B]
G46-2
G46-1
D1+
D1-
“G47”
“G46”
[E]
8
5
5
6
7
I5JB0A820025-01
[A]: Without side-air bag and curtain-air bag
[E]: Shorting bar
4. Junction block assembly
8. Ground for air bag system
[B]: With side-air bag and curtain-air bag
1. From main fuse
5. SDM
[C]: For vehicle without cruise control system
2. Ignition switch
6. Contact coil assembly
[D]: For vehicle with cruise control system
3. “A/B” fuse
7. Driver air bag (inflator) module
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