Suzuki Grand Vitara JB416 / JB420 / JB419. Manual - part 425

8B-85 Air Bag System: 

DTC B1331 / B1335: Left / Right Side Curtain-Air Bag Initiator Circuit Resistance High

S6JB0A8204036

Wiring Diagram

CAUTION

!

 

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

 

DTC Will Set when
The combined resistance of the side curtain-air bag (inflator) module (left or right), harness wiring and connector 
terminal contact is above a specified value for specified time.

Flow Test Description
Step 1: Check whether malfunction is in side curtain-air bag (inflator) module.
Step 2: Check side curtain-air bag initiator circuit.

[A]

BLK

G46-16 GND

“G46”

1

2

4

3

RED

BLK/YEL

“G01”

G46-11

IG

“L32”

YEL/GRN

YEL/BLU

BLK/YEL

BRN/YEL

“G18”

“G41”

L32-1

L32-2

L32-4

L32-3

RC-

RC+

LC-

LC+

8

5

6

7

I5JB0A820056-01

[A]: Shorting bar

3. “A/B” fuse

6. Left side curtain-air bag (inflator) module

1. From main fuse

4. Junction block assembly

7. Right side curtain-air bag (inflator) module

2. Ignition switch

5. SDM

8. Ground for air bag system

Air Bag System:  8B-86

DTC Troubleshooting

Step

Action

Yes

No

1

1) With ignition switch OFF, remove rear side upper trim of 

left or right side and disconnect side curtain-air bag 
(inflator) module connector.

2) Check proper connection to side curtain-air bag (inflator) 

module at terminals in “G18” or “G41” connector.

3) If OK, then connect special tools (A), (B) and (C) to side 

curtain-air bag (inflator) module connector.

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

4) Check SDM DTC.

With ignition switch ON, is DTC B1331 or B1335 still 
indicated?

Go to Step 2.

Replace side curtain-air 
bag (inflator) module 
referring to “Side 
Curtain-Air Bag 
(Inflator) Module 
Removal and 
Installation”.

STEERING WHEEL 

(B)

(C)

(A)

“G18”, “G41”

I5JB0A820057-01

8B-87 Air Bag System: 

NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components, 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.

 

2

1) With ignition switch OFF, disconnect SDM connector 

“L32”.

2) Check proper connection to SDM at terminals “L32-1” 

and “L32-2” or “L32-3” and “L32-4”.

3) If OK, release shorting bar in SDM connector inserting 

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

4) Measure resistance between “L32-1” and “L32-2” 

terminals (for DTC B1331) or “L32-3” and “L32-4” 
terminals (for DTC B1335) with connected special tools 
(A), (B) and (C).

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

Is resistance 5.5 

Ω

 or less?

Substitute a known-
good SDM and recheck.

DTC B1331: Repair 
high resistance or open 
in “YEL/GRN” or “YEL/
BLU” wire circuit.
DTC B1335: Repair 
high resistance or open 
in “BLK/YEL” or “BRN/
YEL” wire circuit.

Step

Action

Yes

No

STEERING WHEEL 

(B)

(C)

(A)

“G18”, “G41”

“L32-1”

“L32-2”

“L32-3”

1, (A)

“L32-4”

(A)

I5JB0A820058-01

Air Bag System:  8B-88

DTC B1332 / B1336: Left / Right Side Curtain-Air Bag Initiator Circuit Resistance Low

S6JB0A8204037

Wiring Diagram
Refer to “DTC B1331 / B1335: Left / Right Side Curtain-Air Bag Initiator Circuit Resistance High”.

CAUTION

!

 

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

 

DTC Will Set when
The combined resistance of the side curtain-air bag (inflator) module (left or right), harness wiring and connector 
terminal contact is below a specified value for specified time.

Flow Test Description
Step 1: Check whether malfunction is in side curtain-air bag (inflator) module.
Step 2: Check side curtain-air bag initiator circuit.

DTC Troubleshooting

Step

Action

Yes

No

1

1) With ignition switch OFF, remove rear side upper trim of 

left or right side and disconnect side curtain-air bag 
(inflator) module connector.

2) Check proper connection to side curtain-air bag (inflator) 

module at terminals in “G18” or “G41” connector.

3) If OK, then connect special tools (A), (B) and (C) to side 

curtain-air bag (inflator) module connector.

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

4) Check SDM DTC.

With ignition switch ON, is DTC B1332 or B1336 still 
indicated?

Go to Step 2.

Replace side curtain-air 
bag (inflator) module 
referring to “Side 
Curtain-Air Bag 
(Inflator) Module 
Removal and 
Installation”.

STEERING WHEEL 

(B)

(C)

(A)

“G18”, “G41”

I5JB0A820057-01