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”

RED

BLK/YEL

“G01”

G47-16

[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”

RED

BLK/YEL

“G01”

G46-11

L33-7

L33-8

PP+

PP-

L33-6

L33-5

DP+

DP-

“L33”

GRN/ORN

GRN/YEL

BLU/ORN

BLU/YEL

“L12”

“L36”

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

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”.

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.

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

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.

DTC Troubleshooting

Step

Action

Yes

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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