Mazda 6. Manual - part 365

ON-BOARD DIAGNOSTIC [AIR BAG SYSTEM] 

T–207

T

End Of Sie

7

INSPECT PASSENGER-SIDE AIR BAG CUT-OFF 
INDICATOR LIGHT

• Turn ignition switch to LOCK position.

• Disconnect negative battery cable and wait for  

more than 1 minutes.

• Remove center panel module.

(See 

T–96 CENTER PANEL MODULE 

REMOVAL/INSTALLATION

)

• Inspect continuity wiring harness between 

passenger-side air bag cut-off indicator light 
terminals A and B.

• Is passenger-side air bag cut-off indicator light 

normal?

Yes

Go to next step.

No

Replace passenger-side air bag cut-off indicator light .

8

INSPECT FOR CONTINUITY BETWEEN METER 
IG 15 A FUSE AND PASSENGER-SIDE AIR BAG 
CUT-OFF INDICATOR LIGHT

• Connect negative battery cable.

• Turn ignition switch to ON position.

• Measure voltage at terminal B of passenger-side 

air bag cut-off indicator light connector.

• Is voltage more than 9V?

Yes

Go to next step.

No

Replace wiring harness.

9

INSPECT WIRING HARNESS BETWEEN 
PASSENGER-SIDE AIR BAG CUT-OFF 
INDICATOR LIGHT AND SAS UNIT

Warning
• Handling air bag system components 

improperly can accidentally deploy air bag 
modules, and pre-tensioner seat belts 
which may seriously injure you. Read AIR 
BAG SYSTEM SERVICE WARNINGS 
before handling air bag system 
components. 
(See 

T–117 SERVICE WARNINGS

)

• Turn ignition switch to LOCK position.

• Disconnect negative battery cable and wait for 

more than 1 minute.

• Remove column cover.

• Disconnect clock spring connector.

• Remove glove compartment.

• Disconnect passenger-side air bag module

connector.

• Disconnect driver and passenger-side side air 

bag module connectors. (Vehicle with side air 
bag)

• Disconnect driver and passenger-side curtain air 

bag module connectors. (Vehicles with curtain 
air bag)

• Remove B-pillar lower trims. (Vehicle with pre-

tensioner seat belt)

• Disconnect driver and passenger-side pre-

tensioner seat belt connectors. (Vehicle with pre-
tensioner seat belt)

• Turn up floor covering.

• Disconnect all SAS unit connectors.

• Inspect following wiring harness between 

passenger-side air bag cut-off indicator light and 
SAS unit terminals for short to ground or open 
circuit:
— A—1U

• Is wiring harness okay?

Yes

[Present malfunction diagnosis]
Replace SAS unit.
(See 

T–124 SAS UNIT REMOVAL/INSTALLATION

)

[Part malfunction diagnosis]
Troubleshooting completed.

No

Replace wiring harness.

STEP

INSPECTION

ACTION

T–208

ON-BOARD DIAGNOSTIC [AIR BAG SYSTEM] 

DTC B1913, B1916, B1932, B1934

A6E817401046W12

Diagnostic procedure

DTC

B1913

Driver-side air bag module (inflator No.1) system  circuit short to ground

 B1916

Driver-side air bag module (inflator No.1) system circuit short to power supply

 B1932

Driver-side air bag module (inflator No.1) system resistance high

B1934

Driver-side air bag module (inflator No.1) system resistance low

DETECTION 

CONDITION

Warning
• Detection conditions are for understanding DTC outline before performing inspection. 

Performing inspection with only detection conditions may cause injury due to operating error 
or damage the system. When performing inspection, always follow inspection procedure.

• Abnormal resistance (other than 1.5—3.7 ohm) detected in driver-side air bag module (inflator No.1) 

circuit

• Malfunction in wiring harness between driver-side air bag module (inflator No.1) and SAS unit

POSSIBLE 

CAUSE

• Open or short circuit in wiring harness between clock spring and SAS unit

• Clock spring malfunction

• Driver-side air bag module (inflator No.1) malfunction

• SAS unit malfunction

STEP

INSPECTION

ACTION

1

INSPECT DRIVER-SIDE AIR BAG MODULE 
(INFLATOR NO.1)

• Check following PID/DATA monitor, using 

SST (WDS or equivalent).
(See 

T–195 PID/DATA MONITOR TABLE

)

— DABAGR

• Is resistant value of driver-side air bag 

module normal?
— Resistance: 1.5—3.7 ohm

Yes

[Present malfunction diagnosis]
Replace SAS unit.
(See 

T–124 SAS UNIT REMOVAL/INSTALLATION

)

[Part malfunction diagnosis]
Troubleshooting completed.

No

Go to next step.

2

INSPECT DRIVER-SIDE AIR BAG MODULE 
CONNECTOR (CLOCK SPRING)

Warning
• Handling air bag system components 

improperly can accidentally deploy air 
bag modules and pre-tensioner seat 
belts, which may seriously injure you. 
Read AIR BAG SYSTEM SERVICE 
WARNINGS before handling air bag 
system components. 
(See 

T–117 SERVICE WARNINGS

)

• Turn ignition switch to LOCK position.

• Disconnect negative battery cable and wait 

for more than 1 minute.

• Remove driver-side air bag module.

• Is there cracking or chipping in driver-side air 

bag module connector?

Yes

Replace wiring harness.

No

Go to next step.

ON-BOARD DIAGNOSTIC [AIR BAG SYSTEM] 

T–209

T

End Of Sie

3

VERIFY WHETHER MALFUNCTION IS IN 
DRIVER-SIDE AIR BAG MODULE (INFLATOR 
NO.1) OR RELATED WIRING HARNESS

• Connect leads of SST (Fuel and 

thermometer checker) or apply 2 ohm 
resistor to driver-side air bag module (inflator 
No.1) connector terminal 3A and 3B, and 
driver-side air bag module (inflator No.2) 
connector terminal 4A and 4B.

• Set resistance of SST (Fuel and 

thermometer checker) to 2 ohm.

• Connect negative battery cable.

• Turn ignition switch to ON position.

• Check following PID/DATA monitor, using 

SST (WDS or equivalent).
(See 

T–195 PID/DATA MONITOR TABLE

)

— OD_DAB1_ST

• Is related wiring harness normal?

Yes

Replace driver-side air bag module.
(See 

T–120 DRIVER-SIDE AIR BAG MODULE REMOVAL/

INSTALLATION

)

No

Go to next step.

4

INSPECT CLOCK SPRING

• Inspect clock spring. 

(See 

T–126 CLOCK SPRING INSPECTION

)

• Is clock spring normal?

Yes

Go to next step.

No

Replace clock spring.
(See 

T–125 CLOCK SPRING REMOVAL/INSTALLATION

)

5

INSPECT WIRING HARNESS BETWEEN 
CLOCK SPRING AND SAS UNIT

• Turn ignition switch to LOCK position.

• Disconnect negative battery cable and wait 

for more than 1 minute.

• Remove column cover.

• Disconnect clock spring connector.

• Remove glove compartment.

• Disconnect passenger-side air bag module 

connector.

• Disconnect driver and passenger-side side 

air bag module connectors. (Vehicle with 
side air bag)

• Disconnect driver and passenger-side 

curtain air bag module connectors. (Vehicle 
with curtain air bag)

• Remove B-pillar lower trim. (Vehicle with pre-

tensioner seat belt)

• Disconnect driver and passenger-side pre-

tensioner seat belt connectors. (Vehicle with 
pre-tensioner seat belt)

• Turn up floor covering.

• Disconnect all SAS unit connectors.

• Inspect following wiring harnesses between 

SAS unit and clock spring terminals for short 
to ground, short to power supply, and open 
circuit:
— 1S—1D
— 1V—1C

• Is wiring harness okay?

Yes

Present malfunction diagnosis:

• Replace SAS unit.

(See 

T–124 SAS UNIT REMOVAL/INSTALLATION

)

Past malfunction diagnosis:

• Troubleshooting completed.

No

Replace wiring harnesses.

STEP

INSPECTION

ACTION

T–210

ON-BOARD DIAGNOSTIC [AIR BAG SYSTEM] 

DTC B1913, B1925, B1933, B1935

A6E817401046W13

Diagnostic procedure

DTC

B1913

Passenger-side air bag module (inflator No.1) system circuit short to ground

B1925

Passenger-side air bag module (inflator No.1) system circuit short to power supply

B1933

Passenger-side air bag module (inflator No.1) system resistance high

B1935

Passenger-side air bag module (inflator No.1) system resistance low

DETECTION 

CONDITION

Warning
• Detection conditions are for understanding DTC outline before performing inspection. 

Performing inspection with only detection conditions may cause injury due to operating error 
or damage the system. When performing inspection, always follow inspection procedure.

• Abnormal resistance (other than 1.4—2.9 ohm) detected in passenger-side air bag module (inflator 

No.1) circuit

• Malfunction in wiring harness between passenger-side air bag module (inflator No.1) and SAS unit

POSSIBLE 

CAUSE

• Open or short circuit in wiring harness between passenger-side air bag module (inflator No.1) and SAS 

unit

• Passenger-side air bag module (inflator No.1) malfunction

• SAS unit malfunction

STEP

INSPECTION

ACTION

1

INSPECT PASSENGER-SIDE AIR BAG 
MODULE (INFLATOR NO.1)

• Check following PID/DATA monitor, using 

SST (WDS or equivalent).
(See 

T–195 PID/DATA MONITOR TABLE

)

— PABAGR

• Is resistant value of passenger-side air bag 

module normal?
— Resistance: 1.4—2.9 ohm

Yes

Present malfunction diagnosis:

• Replace SAS unit.

(See 

T–124 SAS UNIT REMOVAL/INSTALLATION

)

Past malfunction diagnosis:

• Troubleshooting completed.

No

Go to next step.

2

INSPECT PASSENGER-SIDE AIR BAG 
MODULE (INFLATOR NO.1) CONNECTOR

Warning
• Handling air bag system components 

improperly can accidentally deploy air 
bag modules and pre-tensioner seat 
belts, which may seriously injure you. 
Read AIR BAG SYSTEM SERVICE 
WARNINGS before handling air bag 
system components. 
(See 

T–117 SERVICE WARNINGS

)

• Turn ignition switch to LOCK position.

• Disconnect negative battery cable and wait 

for more than 1 minute.

• Remove glove compartment.

• Disconnect passenger-side air bag module 

connector.

• Is there cracking or chipping in passenger-

side air bag module connector?

Yes

Replace wiring harness.

No

Go to next step.