Suzuki Grand Vitara JB627. Service manual — part 316

8B-90 Air Bag System:

DTC B1333 / B1337: Left / Right Side Curtain-Air Bag Initiator Circuit Short to Ground

S6JB0B8204038

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 voltage measured at side curtain-air bag (left or right) initiator circuit 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-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 B1333 or B1337 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

Air Bag System: 8B-91

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) Release shorting bar in SDM connector inserting release

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

3) Measure resistance between “L32-1” and body ground,

and between “L32-2” and body ground (for DTC B1333)
or “L32-3” and body ground, and between “L32-4” and
body ground (for DTC B1337) with connected special
tools (A), (B) and (C).

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

Is resistance infinity?

Substitute a known-
good SDM and recheck.

DTC B1333: Repair
short from “YEL/GRN”
or “YEL/BLU” wire
circuit to ground.
DTC B1337: Repair
short from “BLK/YEL” or
“BRN/YEL” wire circuit
to ground.

Step

Action

Yes

No

STEERING WHEEL

(B)

(C)

(A)

“G18”, “G41”

“L32-1”

“L32-2” “L32-3” “L32-4”

(A)

1, (A)

I5JB0A820059-01

8B-92 Air Bag System:

DTC B1334 / B1338: Left / Right Side Curtain-Air Bag Initiator Circuit Short to Power Circuit

S6JB0B8204039

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 voltage measured at side curtain-air bag (left or right) initiator circuit 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.

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 B1334 or B1338 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

Air Bag System: 8B-93

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) Release shorting bar in SDM connector inserting release

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

3) Measure voltage between “L32-1” and body ground, and

between “L32-2” and ground (for DTC B1334) or “L32-3”
and body ground, and between “L32-4” and body ground
(for DTC B1338) with connected special tools (A), (B)
and (C).

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

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

Substitute a known-
good SDM and recheck.

DTC B1034: Repair
short from “YEL/GRN”
or “YEL/BLU” wire
circuit to power circuit.
DTC B1038: Repair
short from “BLK/YEL” or
“BRN/YEL” wire circuit
to power circuit.

Step

Action

Yes

No

STEERING WHEEL

(B)

(C)

(A)

“G18”, “G41”

“L33-1”

“L33-2”

“L33-3”

“L33-4”

1, (A)

(A)

I5JB0A820060-01