Suzuki Grand Vitara JB416 / JB420. Manual — part 317

8B-64 Air Bag System:

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
(D): 09932–77320

4) Check SDM DTC.

With ignition switch ON, is DTC B1054 or B1058 still
indicated?

Go to Step 3.

DTC B1054: “GRN/
ORN” or “GRN/YEL”
circuit shorted to power
supply circuit. (Between
“L29” and “L12”
connectors)
DTC B1058: “BLU/
ORN” circuit or “BLU/
YEL” circuit shorted to
power supply circuit.
(Between “L29” and
“L36” connectors)

Step

Action

Yes

No

BASE OF COLUMN

PASSENGER INFLATOR

(B)

(D)

“G55”

I5JB0A820040-01

Air Bag System: 8B-65

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 (A),

(B) and (C) or (D) and SDM connector “G47” or “L33”.

2) Release shorting bar in SDM connector inserting release

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

3) Measure voltage between “G47-7” and body ground,

“G47-8” and body ground (for DTC B1053) or “G47-1”
and body ground, “G47-2” and body ground (for DTC
B1057) [A], or between “L33-5” and body ground, “L33-
6” and body ground (for DTC B1053) or “L33-7” and
body ground, “L33-8” and body ground (for DTC B1057)
[B].

Special tool
(A): 09932–76010
(B): 09932–75010
(C): 09932–78310
(D): 09932–77320

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

Substitute a known-
good SDM and recheck.

DTC B1054: “GRN/
ORN” circuit or “GRN/
YEL” circuit shorted to
power supply circuit.
(Between “G55” and
“G47” connectors or
between “L12” and
“L33” connectors)
DTC B1058: “BLU/
ORN” circuit or “BLU/
YEL” circuit shorted to
power supply 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)

1, (A)

(A)

(B)

(D)

1, (A)

“G47-1”

“G47-2”

“G47-7” “G47-8”

“L33-8”

“L33-5”

“L33-6”

“L33-7”

“G55”

I5JB0A820043-01

8B-66 Air Bag System:

DTC B1073 / B1077: Driver / Passenger Forward-Sensor Circuit Short to Ground

S5JB0A8204036

Wiring Diagram

CAUTION

!

Be sure to observe instructions under CAUTION in “Air Bag Diagnostic System Check Flow”.

DTC Will Set when
Forward-sensor abnormal signal is detected by SDM.

Flow Test Description
Step 1: Check for short circuit between forward-sensor circuit and ground.
Step 2: Check if malfunction is in forward-sensor.

5V

BLK

G47-20 GND

“G47”

1

2

4

3

RED

BLK/YEL

“G01”

G47-16

IG

[A]

G47-19

G47-11

FP+

FP-

G47-17

G47-9

FD+

FD-

“G47”

ORN

PNK/BLK

ORN

PNK/BLK

“E77”

“G06”

“E24”

“E13”

PNK

PNK/BLU

PNK

PNK/BLU

BLK

G46-16 GND

“G46”

1

2

4

3

RED

BLK/YEL

“G01”

G46-11

IG

[B]

L33-11

L33-12

FP+

FP-

L33-10

L33-9

FD+

FD-

5V

ORN

PNK/BLK

ORN

PNK/BLK

“E79”

“L03”

“E24”

“E13”

PNK

PNK/BLU

PNK

PNK/BLU

“L33”

8

8

5

5

6

6

7

7

I5JB0A820049-01

[A]: Without side-air bag and curtain-air bag

3. “A/B” fuse

7. Passenger forward-sensor

[B]: With side-air bag and curtain-air bag

4. Junction block assembly

8. Ground for air bag system

1. From main fuse

5. SDM

2. Ignition switch

6. Forward-sensor

Air Bag System: 8B-67

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.
• Clear DTCs referring 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) Turn ignition switch to OFF position.
2) Disconnect forward-sensor connector “E13” or “E24”.
3) Disconnect SDM connector “G47” or “L33”.
4) Check proper connection to SDM connector at terminals

“G47-9” and “G47-17” or “L33-9” and “L33-10” (for DTC
B1073) or terminals “G47-11” and “G47-19” or “L33-11”
and “L33-12” (for DTC B1077).

5) Measure resistance between “G47-9” and body ground,

“G47-17” and body ground (for DTC B1073) or “G47-11”
and body ground, “G47-19” and body ground (for DTC
B1077) [A], or between “L33-9” and body ground, “L33-
10” and body ground (for DTC B1073) or “L33-11” and
body ground, “L33-12” and body ground (for DTC
B1077) [B].

Special tool
(A): 09932–76010

Is each measured resistance infinity?

Go to Step 2.

For DTC B1073: “ORN”
circuit or “PNK/BLK”
circuit shorted to
ground.
For DTC B1077: “PNK”
circuit or “PNK/BLU”
circuit shorted to
ground.

2

1) Check forward-sensor referring to “Forward-Sensor

Inspection”.

Is it in good condition?

Substitute a known-
good SDM and recheck.

Replace forward-sensor
referring to “Forward-
Sensor Removal and
Installation”. If DTC still
exists, substitute a
known-good SDM and
recheck.

[A]

[B]

“G47-17”

“G47-9”

“G47-19” “G47-11”

“L33-10”

“L33-9”

“L33-11” “L33-12”

(A)

I5JB0A820050-02