Suzuki Grand Vitara JB627. Service manual - part 301

8B-30 Air Bag System: 

DTC Troubleshooting

Step

Action

Yes

No

1

1) With ignition switch OFF, disconnect contact coil 

connector located under of the steering column.

2) Check proper connection to contact coil at terminal in 

“G26” or “G27” connector.

3) If OK, then connect special tools (B) and (C) to “G26” 

connector (For vehicle without cruise control system [A]) 
or special tools (B) and (D) to “G27” connector (for 
vehicle with cruise control system [B]) disconnected in 
Step 1).

Special tool
(B):  09932–75010 
(C):  09932–78340
(D):  09932–77320 

4) Check SDM DTC.

With ignition switch ON, is DTC B1031 indicated?

Go to Step 2.

Go to Step 3.

(D)

“G27”

(B)

(C)

“G26”

BASE OF COLUMN

(B)

BASE OF COLUMN

[A]

[B]

DRIVER

PASSENGER

I5JB0A820026-02

Air Bag System:  8B-31

2

1) With ignition switch OFF, disconnect SDM connector 

“G47” or “G46”.

2) Check proper connection to SDM at terminals “G47-5” 

and “G47-6” or “G46-1” and “G46-2”.

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

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

4) Measure resistance between “G47-5” and “G47-6” 

terminals [A] or between “G46-1” and “G46-2” terminals 
[B] with connected special tools (B) and (C) (for vehicle 
without cruise control system [C]) or special tools (B) 
and (D) (for vehicle with cruise control system [D]).

Special tool
(A):  09932–76010 
(B):  09932–75010 
(C):  09932–78340 
(D):  09932–77320

Is resistance 5.5 

Ω

 or less?

Substitute a known-
good SDM and recheck.

High resistance or open 
wire in “GRN/RED” or 
“GRN” circuit.

Step

Action

Yes

No

[C]

[D]

[A]

[B]

“G47-6”

“G46-2”

“G47-5”

“G46-1”

1, (A)

(A)

1, (A)

(D)

“G27”

(B)

(C)

“G26”

BASE OF COLUMN

(B)

BASE OF COLUMN

DRIVER

PASSENGER

I5JB0A820027-02

8B-32 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.

 

3

1) With ignition switch OFF, disconnect special tools (B) 

and (C) or (D) from “G26” or “G27” connector and then 
reconnect contact coil connector located under of the 
steering column.

2) Remove driver air bag (inflator) module from steering 

wheel referring to “Driver Air Bag (Inflator) Module 
Removal and Installation”.

3) Check proper connection to driver air bag (inflator) 

module connector.

4) If OK, then connect special tools (A), (B) and (E) to 

driver air bag (inflator) module connector.

Special tool
(A):  09932–76010 
(B):  09932–75010 
(C):  09932–78340
(D):  09932–77320 
(E):  09932–78310 

5) Check SDM DTC.

With ignition switch ON, is DTC B1031 indicated?

Turn ignition switch 
OFF. Replace contact 
coil assembly referring 
to “Contact Coil Cable 
Assembly Removal and 
Installation in Section 
6B”.

Turn ignition switch 
OFF. Replace driver air 
bag (inflator) module 
referring to “Driver Air 
Bag (Inflator) Module 
Removal and 
Installation”.

Step

Action

Yes

No

(A)

STEERING WHEEL

(B)

(E)

I5JB0A820028-01

Air Bag System:  8B-33

DTC B1032: Driver Air Bag Initiator Circuit Resistance Low

S6JB0B8204016

Wiring Diagram
Refer to “DTC B1031: Driver 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 driver air bag (inflator) module, contact coil assembly, harness wiring and connector 
terminal contact is below a specified value for specified time.

Flow Test Description
Step 1: Check whether malfunction is in contact coil and driver air bag (inflator) module or the others.
Step 2: Check driver air bag (inflator) module initiator circuit.
Step 3: Check whether malfunction is in contact coil or driver air bag (inflator) module.

DTC Troubleshooting

Step

Action

Yes

No

1

1) With ignition switch OFF, disconnect contact coil 

connector located under of the steering column.

2) Check proper connection to contact coil at terminal in 

“G26” or “G27” connector.

3) If OK, then connect special tools (B) and (C) to “G26” 

connector (For vehicle without cruise control system [A]) 
or special tools (B) and (D) to “G27” connector (for 
vehicle with cruise control system [B]) disconnected in 
Step 1).

Special tool
(B):  09932–75010 
(C):  09932–78340
(D):  09932–77320 

4) Check SDM DTC.

With ignition switch ON, is DTC B1032 indicated?

Go to Step 2.

Go to Step 3.

(D)

“G27”

(B)

(C)

“G26”

BASE OF COLUMN

(B)

BASE OF COLUMN

[A]

[B]

DRIVER

PASSENGER

I5JB0A820026-02