Suzuki Grand Vitara JB416 / JB420. Manual — part 314

8B-52 Air Bag System:

2

1) With ignition switch OFF, disconnect “G67” connector

located near the glove box.

2) Check proper connection to instrument panel harness

connector at terminal “G67-1” and “G67-2”.

3) If OK, then connect special tools (B) and (C) to “G67”

connector disconnected in Step 1).

Special tool
(B): 09932–75010
(C): 09932–77320

4) Check SDM DTC.

With ignition switch ON, is DTC B1044 indicated?

Go to Step 3.

“BLU/RED” or “YEL/
RED” circuit shorted to
power supply circuit.
(Between “G68” and
“G65” connectors)

Step

Action

Yes

No

(B)

(C)

STEERING WHEEL

PASSENGER

DRIVER

“G67”

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Air Bag System: 8B-53

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 special tools (B)

and (C) from “G67” connector and SDM connector “G47”
and “G46” from SDM respectively.

2) Release shorting bar in SDM connector inserting release

tool (1) included in special tool (A).

3) Measure voltage between “G47-3” and body ground,

and between “G47-4” and body ground [A] or between
“G46-5” and body ground, and between “G46-6” and
body ground [B].

Special tool
(A): 09932–76010
(B): 09932–75010
(C): 09932–77320

With ignition switch ON, is voltage 4 V or less?

Substitute a known-
good SDM and recheck.

“BLU/RED” or “YEL/
RED” circuit shorted to
power supply circuit.
(Between “G67” and
“G47” connectors or
between “G67” and
“G46” connectors).

Step

Action

Yes

No

PASSENGER

DRIVER

(B)

(C)

STEERING WHEEL

“G67”

[B]

[A]

“G47-3”

“G47-4”

“G46-5”

“G46-6”

(A)

1, (A)

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8B-54 Air Bag System:

DTC B1051 / B1055: Driver / Passenger Pretensioner Initiator Circuit Resistance High

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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

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[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

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BASE OF COLUMN

PASSENGER INFLATOR

(B)

(D)

“G55”

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