Suzuki Grand Vitara JB627. Manual - part 312

8B-74 Air Bag System: 

2

1) With ignition switch OFF, disconnect SDM connector 

“L33”.

2) Check proper connection to SDM at terminals “L33-1” 

and “L33-2” or “L33-3” and “L33-4”.

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

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

4) Measure resistance between “L33-1” and “L33-2” 

terminals (for DTC B1321) or “L33-3” and “L33-4” 
terminals (for DTC B1325) with connected special tool 
(B) and (C).

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

Is resistance 5.5 

Ω

 or less?

Substitute a known-
good SDM and recheck.

DTC B1321: Repair 
high resistance or open 
in “GRY/RED” or “GRY” 
wire circuit in floor 
harness.
DTC B1325: Repair 
high resistance or open 
in “BRN/WHT” or “BRN” 
wire circuit in floor 
harness.

Step

Action

Yes

No

(A)

“L25”, “L30”

(C)

(B)

STEERING WHEEL

“L33-1”

“L33-2”

“L33-3 ”

“L33-4”

1, (A)

I5JB0A820045-01

Air Bag System:  8B-75

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.

 

3

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

and (C) then reconnect connector “L25” or “L30”.

2) Disconnect side-air bag (inflator) module connector 

“Q02” or “Q03” from side-air bag (inflator) module.

3) Check proper connection to side-air bag (inflator) 

module at terminal in connector.

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

air bag (inflator) connector.

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

5) Check SDM DTC.

With ignition switch ON, is DTC B1321 or B1325 still 
indicated?

DTC B1321: Repair 
high resistance or open 
in “GRY/RED” or “GRY” 
wire circuit in seat 
harness.
DTC B1325: Repair 
high resistance or open 
in “BRN/WHT” or “BRN” 
wire circuit in seat 
harness.

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

Step

Action

Yes

No

“L25”, “L30”

STEERING WHEEL

(B)

(D)

(A)

“Q02”, “Q03”

I5JB0A820046-02

8B-76 Air Bag System: 

DTC B1322 / B1326: Left / Right Side-Air Bag Initiator Circuit Resistance Low

S6JB0B8204033

Wiring Diagram
Refer to “DTC B1321 / B1325: Left / Right Side-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-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-air bag (inflator) module.
Step 2: Check side-air bag initiator circuit in floor harness.
Step 3: Check side-air bag initiator circuit in seat harness.

DTC Troubleshooting

Step

Action

Yes

No

1

1) With ignition switch OFF, disconnect side-air bag 

(inflator) module connector under front seat cushion.

2) Check proper connection to left or right side-air bag 

(inflator) module at terminals in “L25” or “L30” connector.

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

bag (inflator) module connector disconnected at the Step 
1.

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

4) Check SDM DTC.

With ignition switch ON, is DTC B1322 or B1326 still 
indicated?

Go to Step 2.

Go to Step 3.

“L25”, “L30”

(C)

(B)

STEERING WHEEL

I4RS0A820032-01

Air Bag System:  8B-77

2

1) With ignition switch OFF, disconnect SDM connector 

“L33”.

2) Check proper connection to SDM at terminals “L33-1” 

and “L33-2” or “L33-3” and “L33-4”.

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

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

4) Measure resistance between “L33-1” and “L33-2” 

terminals (for DTC B1322) or “L33-3” and “L33-4” 
terminals (for DTC B1326) with connected special tools 
(B) and (C).

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

Is resistance 0.65 

Ω

 or more?

Substitute a known-
good SDM and recheck.

DTC B1322: Repair 
short from “GRY/RED” 
wire circuit to “GRY” 
wire circuit or from 
“GRY/RED” or “GRY” 
wire circuit to other wire 
circuit in floor harness.
DTC B1326: Repair 
short from “BRN/WHT” 
wire circuit to “BRN” 
wire circuit or from 
“BRN/WHT” or “BRN” 
wire circuit to other wire 
circuit in floor harness.

Step

Action

Yes

No

(A)

“L25”, “L30”

(C)

(B)

STEERING WHEEL

“L33-1”

“L33-2”

“L33-3 ”

“L33-4”

1, (A)

I5JB0A820045-01