Suzuki Grand Vitara JB627. Manual — part 307
8B-54 Air Bag System:
DTC B1051 / B1055: Driver / Passenger Pretensioner Initiator Circuit Resistance High
S6JB0B8204023
Wiring Diagram
CAUTION
!
Be sure to observe instructions under CAUTION in “Air Bag Diagnostic System Check Flow”.
DTC Will Set when
The resistance of driver or passenger seat belt pretensioner initiator circuit is above a specified value for specified
time.
Flow Test Description
Step 1: Check if malfunction is in seat belt pretensioner.
Step 2: Check seat belt pretensioner initiator circuit. (Between “L29” and “L12” or “L29” and “L36”)
Step 3: Check seat belt pretensioner initiator circuit. (Between “G55” and “G47”, “L12” and “L33” or “L36”
and “L33”)
BLK
G47-20 GND
“G47”
1
2
4
3
RED
BLK/YEL
“G01”
G47-16
IG
[A]
G47-2
G47-1
PP+
PP-
G47-7
G47-8
DP+
DP-
[B]
“G47”
[C]
GRN/ORN
GRN/YEL
BLU/ORN
BLU/YEL
GRN/ORN
GRN/YEL
BLU/ORN
BLU/YEL
“L36”
“L12”
“G55” “L29”
BLK
G46-16 GND
“G46”
1
2
4
3
RED
BLK/YEL
“G01”
G46-11
IG
L33-7
L33-8
PP+
PP-
L33-6
L33-5
DP+
DP-
“L33”
GRN/ORN
GRN/YEL
BLU/ORN
BLU/YEL
“L12”
“L36”
8
5
5
8
6
7
6
7
I5JB0A820038-01
[A]: Without side-air bag and curtain-air bag
1. From main fuse
4. Junction block assembly
7. Passenger seat belt pretensioner
[B]: With side-air bag and curtain-air bag
2. Ignition switch
5. SDM
8. Ground for air bag system
[C]: Shorting bar
3. “A/B” fuse
6. Driver seat belt pretensioner
Air Bag System: 8B-55
DTC Troubleshooting
Step
Action
Yes
No
1
1) With ignition switch OFF, remove center pillar lower trim
of driver or passenger side and disconnect seat belt
pretensioner connector “L12” or “L36” (1).
2) Check proper connection to seat belt pretensioner at
terminals in “L12” or “L36” connector.
3) If OK, then connect special tools (A), (B) and (C) to “L12”
or “L36” connector disconnected in Step 1).
Special tool
(A): 09932–76010
(B): 09932–75010
(C): 09932–78310
4) Check SDM DTC.
With ignition switch ON, is DTC B1051 or B1055 still
indicated?
Without side-air bag and
curtain-air bag: go to
Step 2.
With side-air bag and
curtain-air bag: go to
Step 3.
Turn ignition switch
OFF. Replace seat belt
pretensioner referring to
“Front Seat Belt
Removal and
Installation in Section
8A”.
2
1) With ignition switch OFF, disconnect “G55” connector
located near the console box.
2) Check proper connection to applicable seat belt
pretensioner at terminal in “G55” connector.
3) If OK, then connect special tools (B) and (D) to “G55”
connector.
Special tool
(B): 09932–75010
(C): 09932–77320
4) Check SDM DTC.
With ignition switch ON, is DTC B1051 or B1055 still
indicated?
Go to Step 3.
DTC B1051: High
resistance or open wire
in “GRN/ORN” or “GRN/
YEL” circuit. (Between
“L29” and “L12”
connectors)
DTC B1055: High
resistance or open wire
in “BLU/ORN” or “BLU/
YEL” circuit. (Between
“L29” and “L36”
connectors)
(C)
(A)
(B)
“L12”, “L36”
STEERING WHEEL
I5JB0A820039-01
BASE OF COLUMN
PASSENGER INFLATOR
(B)
(D)
“G55”
I5JB0A820040-01
8B-56 Air Bag System:
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 SDM connector
“G47” or “L33”.
2) Check proper connection to SDM at terminals “G47-7”
and “G47-8” or “L33-5” and “L33-6” (for DTC B1051) or
terminals “G47-1” and “G47-2” or “L33-7” and “L33-8”
(for DTC B1055).
3) If OK, release shorting bar in SDM connector inserting
release tool (1) included in special tool (A).
4) Measure resistance between “G47-7” and “G47-8” (for
DTC B1051) or “G47-1” and “G47-2” (for DTC B1055)
with connected special tools (B) and (D) [A], or between
“L33-5” and “L33-6” (for DTC B1051) or “L33-7” and
“L33-8” (for DTC B1055) with connected special tools
(A), (B) and (C) [B].
Special tool
(A): 09932–76010
(B): 09932–75010
(C): 09932–78310
(D): 09932–77320
Is resistance 5.5
Ω
or less?
Substitute a known-
good SDM and recheck.
DTC B1051: High
resistance or open wire
in “GRN/ORN” or “GRN/
YEL” circuit. (Between
“G55” and “G47”
connectors or between
“L12” and “L33”
connectors)
DTC B1055: High
resistance or open wire
in “BLU/ORN” or “BLU/
YEL” circuit. (Between
“G55” and “G47”
connectors or between
“L36” and “L33”
connectors)
Step
Action
Yes
No
BASE OF COLUMN
PASSENGER INFLATOR
[A]
“L12”, “L36”
[B]
(C)
(B)
(A)
STEERING WHEEL
(A)
“L33-5”
“L33-6”
“L33-7”
“L33-8”
“G47-1”
“G47-2”
“G47-7”
“G47-8”
“G55”
(D)
(B)
1, (A)
(A)
1, (A)
I5JB0A820041-01
Air Bag System: 8B-57
DTC B1052 / B1056: Driver / Passenger Pretensioner Initiator Circuit Resistance Low
S6JB0B8204024
Wiring Diagram
Refer to “DTC B1051 / B1055: Driver / Passenger Pretensioner Initiator Circuit Resistance High”.
CAUTION
!
Be sure to observe instructions under CAUTION in “Air Bag Diagnostic System Check Flow”.
DTC Will Set when
The resistance of driver or passenger seat belt pretensioner initiator circuit is below a specified value for specified
time.
Flow Test Description
Step 1: Check if malfunction is in seat belt pretensioner.
Step 2: Check seat belt pretensioner initiator circuit. (Between “L29” and “L12” or “L29” and “L36”)
Step 3: Check seat belt pretensioner initiator circuit. (Between “G55” and “G47”, “L12” and “L33” or “L36”
and “L33”)
DTC Troubleshooting
Step
Action
Yes
No
1
1) With ignition switch OFF, remove center pillar lower trim
of driver or passenger side and disconnect seat belt
pretensioner connector “L12” or “L36” (1).
2) Check proper connection to seat belt pretensioner at
terminals in “L12” or “L36” connector.
3) If OK, then connect special tools (A), (B) and (C) to “L12”
or “L36” connector disconnected in Step 1).
Special tool
(A): 09932–76010
(B): 09932–75010
(C): 09932–78310
4) Check SDM DTC.
With ignition switch ON, is DTC B1052 or B1056 still
indicated?
Without side-air bag and
curtain-air bag: go to
Step 2.
With side-air bag and
curtain-air bag: go to
Step 3.
Turn ignition switch
OFF. Replace seat belt
pretensioner referring to
“Front Seat Belt
Removal and
Installation in Section
8A”.
(C)
(A)
(B)
“L12”, “L36”
STEERING WHEEL
I5JB0A820039-01
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