Suzuki Grand Vitara JB416 / JB420. Manual - part 310

8B-36 Air Bag System:

DTC B1033: Driver Air Bag Initiator Circuit Short to Ground

S5JB0A8204020

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 voltage measured at driver air bag initiator circuit 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

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 B1033 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-37

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

and (C) or (D) from “G26” or “G27” connector and SDM
connector “G47” or “G46” from SDM respectively.

2) Release Shorting bar in SDM connector inserting

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

3) Measure resistance between “G47-5” terminal and body

ground, and between “G47-6” terminal and body ground
[A] or between “G46-1” terminal and body ground, and
between “G46-2” terminal and body ground [B].

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

Are resistances infinity?

Substitute a known-
good SDM and recheck.

“GRN/RED” circuit or
“GRN” circuit shorted to
ground.

Step

Action

Yes

(C), (D)

“G26”, “G27”

(B)

BASE OF COLUMN

[A]

[B]

1, (A)

(A)

1, (A)

“G47-5”

“G47-6”

“G46-1”

“G46-2”

I5JB0A820030-01

8B-38 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.

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

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

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

column 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 B1033 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

(A)

STEERING WHEEL

(B)

(E)

I5JB0A820028-01

Air Bag System: 8B-39

DTC B1034: Driver Air Bag Initiator Circuit Short to Power Circuit

S5JB0A8204021

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 voltage measured at driver air bag initiator circuit is above a specified value for specified time.

DTC Troubleshooting

Step

Action

Yes

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 B1034 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

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