Suzuki Grand Vitara JB416 / JB420. Manual - part 305

8B-16 Air Bag System: 

DTC Check

S5JB0A8204004

Using SUZUKI Scan Tool

1) Turn ignition switch to OFF position.
2) Connect SUZUKI scan tool to data link connector 

(DLC) located on underside of instrument panel at 
driver’s seat side.

Special tool
(A):  SUZUKI scan tool

3) Turn ignition switch to ON position.
4) Read DTC according to instructions displayed on 

SUZUKI scan tool and print it or write it down. Refer 
to SUZUKI scan tool operator’s manual for further 
details.
If communication between scan tool and SDM is not 
possible, check if scan tool is communicable by 
connecting it to SDM in another vehicle. If 
communication is possible in this case, scan tool is 
in good condition. Then check data link connector 
and serial data line (circuit) in the vehicle with which 
communication was not possible.

5) After completing the check, turn ignition switch to 

OFF position and disconnect SUZUKI scan tool from 
data link connector (DLC) (1).

Using Monitor Connector (If Equipped)

1) Using service wire (3), ground diagnosis switch 

terminal (2) in “AIR BAG” monitor coupler (1).

2) Read DTC from flashing pattern of malfunction 

indicator lamp (“AIR BAG” warning lamp) Referring 
to “DTC Table”.
If lamp does not indicate DTC, proceed to ““AIR 
BAG” Warning Lamp Cannot Indicate Flashing 
Pattern of DTC (If Equipped with “AIR BAG” Monitor 
Coupler)”.

3) After completing the check, turn ignition switch to 

OFF position and disconnect service wire from “AIR 
BAG” monitor coupler.

Example: When driver air bag initiator circuit resistance high (DTC B1031) is set

(A)

1

I5JB0A820013-01

4. Body ground

1

3

4

1

2

I5JB0A820014-02

DTC B1031

A

B

1

1

3

0

0.3

0.3

0.3

1.0 1.0

1.0

1.0

3.0

3.0

C

D

C

C

C

I5JB0A820015-01

A: “AIR BAG” warning lamp is turned ON

C: Code No.1031 

B: “AIR BAG” warning lamp is turned OFF

D: Time (sec.)

Air Bag System:  8B-17

DTC Clearance

S5JB0A8204005

Using SUZUKI Scan Tool

1) Turn ignition switch to OFF position.
2) Connect SUZUKI scan tool to data link connector 

(DLC) (1) in the same manner as when making this 
connection for DTC check.

Special tool
(A):  SUZUKI scan tool

3) Turn ignition switch to ON position.
4) Erase DTC according to instructions displayed on 

SUZUKI scan tool. Refer to SUZUKI scan tool 
operator’s manual for further details.

5) After completing the clearance, perform “DTC 

Check” and confirm that normal DTC (NO CODES) 
is displayed and not malfunction DTC.

6) Turn ignition switch to OFF position and disconnect 

SUZUKI scan tool from DLC.

NOTE
If DTC B1013 or B1021 is stored in SDM, it is 
not possible to clear DTC.

 

Using Monitor Connector (If Equipped)

1) Turn ignition switch to ON position and wait about 6 

seconds or more.

2) Using service wire (4), repeat shorting and opening 

between diagnosis switch terminal (3) on “AIR BAG” 
monitor coupler (1) and body ground (2) 5 times at 
about 1 second intervals within 10 seconds.

3) Perform “DTC Check” and confirm that normal DTC 

(NO. 0000) is displayed and not malfunction DTC.

NOTE
If DTC B1013 or B1021 is stored in SDM, it is 
not possible to clear all DTC.

 

(A)

1

I5JB0A820013-01

O: Open

T: Max, 10 seconds

S: Short

T1: About 1 sec.

O

S

T

T1 T1

1

3

2

4

5

2

4

1

3

1

I5JB0A820016-01

8B-18 Air Bag System: 

Scan Tool Data

S5JB0A8204006

Data list of SDM

Scan Tool Data Definition
Back Up Volt (V):  This parameter indicates the 

capacity of the backup condenser installed to 
maintain the ignition current (as much as possible) 
even when the power supply to SDM that ignites the 
inflator is shut off.

Battery Volt (V):  Battery voltage is an analog input 

signal read by SDM.

System ID (4ch/8ch):  This parameter indicates the 

number of initiator circuits.

Driv A/B Ini Res (Driver air bag initiator resistance) 

(ohm):  This parameter indicates the resistance of 
the driver air bag initiator circuit.

Pass A/B Ini Res (Passenger air bag initiator 

resistance) (ohm):  This parameter indicates the 
resistance of the passenger air bag initiator circuit.

Driv Pret Ini Res (Driver pretensioner initiator 

resistance) (ohm):  This parameter indicates the 
resistance of the driver seat belt pretensioner 
initiator circuit.

Pass Pret Ini Res (Passenger pretensioner initiator 

resistance) (ohm):  This parameter indicates the 
resistance of the passenger seat belt pretensioner 
initiator circuit.

LH Side Ini Res (Left side-air bag initiator resistance) 

(ohm):  This parameter indicates the resistance of 
the left side-air bag initiator circuit.

RH Side Ini Res (Right side-air bag initiator 

resistance) (ohm):  This parameter indicates the 
resistance of the right side-air bag initiator circuit.

LH Curtain Ini Res (Left side curtain-air bag initiator 

resistance) (ohm):  This parameter indicates the 
resistance of the left side curtain-air bag initiator 
circuit.

RH Curtain Ini Res (Right side curtain-air bag 

initiator resistance) (ohm):  This parameter 
indicates the resistance of the right side curtain-air 
bag initiator circuit.

“AIR BAG” Warning Lamp Comes ON Steady

S5JB0A8204007

Wiring Diagram

CAUTION

!

 

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

 

Scan Tool Data

Normal Condition / 

Reference Value

Battery volt

10 – 14 V

Back up volt

27.0 – 33.0 V

System ID

4ch or 8ch

Driv A/B Ini Res

2.1 – 3.8 ohm

Pass A/B Ini Res

1.8 – 2.8 ohm

Driv Pret Ini Res

1.8 – 2.9 ohm

Pass Pret Ini Res

1.8 – 2.9 ohm

LH Side Ini Res

1.8 – 2.6 ohm

RH Side Ini Res

1.8 – 2.6 ohm

LH Curtain Ini Res

1.8 – 2.8 ohm

RH Curtain Ini Res

1.8 – 2.8 ohm

BLK

G47-18

G47-20

L2

L1

GND

WL

“G47”

12V

1

2

6

8

4

5

RED

PPL/RED

BLK/YEL

YEL/BLK

BLK

RED

YEL/BLK

“G01”

7

“G28”

“G03”

G47-16

IG

[A]

G46-7

G46-16

L2

L1

GND

WL

“G46”

L4

L3

12V

G46-11

IG

[B]

L6

L5

3

10

10

9

9

9

9

11

I5JB0A820017-01

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

3. Junction block assembly

7. Lamp driver

11. Ground for air bag system

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

4. “A/B” fuse

8. “AIR BAG” warning lamp

1. From main fuse

5. “METER” fuse

9. Connection detection pin

2. Ignition switch

6. Combination meter

10. SDM

Air Bag System:  8B-19

Flow Test Description
Step 1: Check for “AIR BAG” fuse blown.
Step 2: Check for loose connection between junction block assembly connector and junction block assembly. 
Step 3: Check for loose connection between SDM connector and SDM. 
Step 4: Check for SDM power supply circuit.
Step 5: Check for open or short circuit between “AIR BAG” warning lamp circuit and ground.

Troubleshooting

Step

Action

Yes

No

1

1) Turn ignition switch OFF.
2) Remove and inspect “A/B” fuse.

Is fuse good?

Go to Step 2.

“RED” wire short to 
ground.
After repair, replace “A/
B” fuse.

2

1) Check for loose connection of junction block assembly 

connector “G01”.

Is it connected securely?

Go to Step 3.

Correct connector “G01” 
securely.

3

Check for loose connection of SDM connector “G47” or 
“G46”.

Is it connected securely?

Go to Step 4.

Correct connector “G47” 
or “G46” securely.

4

1) Disconnect SDM connector “G47” or “G46”.
2) Check proper connection to SDM at terminal “G47-16” or 

“G46-11”.

3) If OK, then check voltage between “G47-16” terminal [A] 

or “G46-11” terminal [B] of SDM connector and body 
ground with ignition switch ON.

Special tool
(A):  09932–76010 

Is it 8 V or more?

Go to Step 5.

“RED” wire (between “A/
B” fuse and SDM 
connector) open or 
“BLK/YEL” wire 
(between ignition switch 
and “A/B” fuse) open or 
short to ground.

(A)

[A]

[B]

“G47-16”

“G46-11”

I5JB0A820018-01