Content .. 306 307 308 309 ..

Mazda CX 7. Manual - part 308

ON-BOARD DIAGNOSTIC

08-02–27

08-02

DTC B1913, B1925, B1933, B1935

id080200801800

Diagnostic procedure

DTC

B1913

Passenger-side air bag module (inflator No.1) circuit short to body ground (air bag system warning
light DTC 21 is displayed.)

B1925

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

B1933

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

B1935

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

DETECTION

CONDITION

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

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

• Abnormal resistance (other than 1.4— 3.6 ohms) detected in the passenger-side air bag module

(inflator No.1) circuit

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

control module

POSSIBLE

CAUSE

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

and SAS control module

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

• SAS control module malfunction

STEP

INSPECTION

ACTION

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

• Using the M-MDS, verify the following PID/

DATA monitor.
(See 08-02-8 PID/DATA MONITOR TABLE.)
— RES_AB_P

• Is the resistance of the passenger-side air

bag module normal?
— Resistance: 1.4— 3.6 ohms

Yes

Replace the SAS control module.
(See 08-10-10 SAS CONTROL MODULE REMOVAL/
INSTALLATION.)

Go to the next step.

PASSENGER-SIDE AIR BAG MODULE

WIRING HARNESS-SIDE CONNECTOR

(INFLATOR NO.1)

(INFLATOR NO.2)

1871-1U-06B(08-02).fm 27 ページ２００６年３月１５日　水曜日　午前１１時３３分

ON-BOARD DIAGNOSTIC

08-02–28

End Of Sie

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

Warning
• Handling the air bag system

components improperly can
accidentally deploy the air bag
modules and pre-tensioner seat belts,
which may seriously injure you. Read
the service warnings and cautions
before handling the air bag system
components.
(See 08-10-3 AIR BAG SYSTEM
SERVICE WARNINGS.)
(See 08-10-5 AIR BAG SYSTEM
SERVICE CAUTIONS.)

• Turn the ignition switch to the LOCK position.

• Disconnect the negative battery cable and

wait for 1 min or more.

• Remove the glove compartment.

(See 09-17-8 GLOVE COMPARTMENT
REMOVAL/INSTALLATION.)

• Disconnect the passenger-side air bag

module connector.

• Is there any malfunction of the passenger-

side air bag module connector?

Yes

Replace the air bag wiring harness.

Go to the next step.

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

• Connect the leads of the SST (Fuel and

thermometer checker) or apply 2-ohm
resistance to passenger-side air bag module
(inflator No.1) connector terminals A and B,
and passenger-side air bag module (inflator
No.2) connector terminals A and B.

• Set the resistance of the SST (Fuel and

thermometer checker) to the 2-ohm
position.

• Connect the negative battery cable.

• Turn the ignition switch to the ON position.

• Are DTCs B1913, B1925, B1933 and/or

B1935 indicated?

Yes

Replace the air bag wiring harness, then go to the next
step.

Replace the passenger-side air bag module.
(See 08-10-7 PASSENGER-SIDE AIR BAG MODULE
REMOVAL/INSTALLATION.)

INSPECT SAS CONTROL MODULE

• Turn the ignition switch to the LOCK position.

• Disconnect the negative battery cable and

wait for 1 min or more.

• Connect the passenger-side air bag module

connector.

• Turn the ignition switch to the ON position.

• Are DTCs B1913, B1925, B1933 and/or

B1935 indicated?

Yes

Replace the SAS control module.
(See 08-10-10 SAS CONTROL MODULE REMOVAL/
INSTALLATION.)

DTC troubleshooting completed.

STEP

INSPECTION

ACTION

1871-1U-06B(08-02).fm 28 ページ２００６年３月１５日　水曜日　午前１１時３３分

ON-BOARD DIAGNOSTIC

08-02–29

08-02

DTC B1992, B1993, B1994, B1995

id080200801900

Diagnostic procedure

DTC

B1992

Driver-side side air bag module circuit short to power supply

B1993

Driver-side side air bag module circuit short to body ground

B1994

Driver-side side air bag module circuit resistance high

B1995

Driver-side side air bag module circuit resistance low

DETECTION

CONDITION

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

• Abnormal resistance (other than 1.4— 3.9 ohms) detected in the driver-side side air bag module circuit

• Malfunction in the wiring harness between the driver-side side air bag module and SAS control module

POSSIBLE

CAUSE

• Open or short circuit in the wiring harness between the driver-side side air bag module and SAS control

module

• Driver-side side air bag module malfunction

• SAS control module malfunction

STEP

INSPECTION

ACTION

INSPECT DRIVER-SIDE SIDE AIR BAG
MODULE

• Using the M-MDS, verify the following PID/

DATA monitor.
(See 08-02-8 PID/DATA MONITOR TABLE.)
— RES_SAB_D

• Is the resistance of the driver-side side air

bag module normal?
— Resistance: 1.4— 3.9 ohms

Yes

Replace the SAS control module.
(See 08-10-10 SAS CONTROL MODULE REMOVAL/
INSTALLATION.)

Go to the next step.

INSPECT DRIVER-SIDE SIDE AIR BAG
MODULE CONNECTOR

Warning
• Handling the air bag system

• Turn the ignition switch to the LOCK position.

• Disconnect the negative battery cable and

wait for 1 min or more.

• Disconnect the driver-side side air bag

module connector.

• Is there any malfunction of the driver-side

side air bag module connector?

Yes

Replace the air bag wiring harness.

Go to the next step.

DRIVER-SIDE SIDE AIR BAG MODULE

WIRING HARNESS-SIDE CONNECTOR

1871-1U-06B(08-02).fm 29 ページ２００６年３月１５日　水曜日　午前１１時３３分

ON-BOARD DIAGNOSTIC

08-02–30

End Of Sie

DTC B1996, B1997, B1998, B1999

id080200802000

VERIFY WHETHER MALFUNCTION IS IN
DRIVER-SIDE SIDE AIR BAG MODULE OR
RELATED WIRING HARNESS

• Connect the leads of the SST (Fuel and

thermometer checker) or apply 2-ohm
resistance to driver-side side air bag module
connector terminals A and B.

• Set the resistance of the SST (Fuel and

thermometer checker) to the 2-ohm
position.

• Connect the negative battery cable.

• Turn the ignition switch to the ON position.

• Are DTCs B1992, B1993, B1994, and/or

B1995 indicated?

Yes

Replace the air bag wiring harness, then go to the next
step.

Replace the driver-side side air bag module.
(See 08-10-8 SIDE AIR BAG MODULE REMOVAL/
INSTALLATION.)

INSPECT SAS CONTROL MODULE

• Turn the ignition switch to the LOCK position.

• Disconnect the negative battery cable and

wait for 1 min or more.

• Connect the driver-side side air bag module

connector.

• Turn the ignition switch to the ON position.

• Are DTCs B1992, B1993, B1994, and/or

B1995 indicated?

Yes

Replace the SAS control module.
(See 08-10-10 SAS CONTROL MODULE REMOVAL/
INSTALLATION.)

DTC troubleshooting completed.

STEP

INSPECTION

ACTION

DTC

B1996

Passenger-side side air bag module circuit short to power supply

B1997

Passenger-side side air bag module circuit short to body ground

B1998

Passenger-side side air bag module circuit resistance high

B1999

Passenger-side side air bag module circuit resistance low

DETECTION

CONDITION

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

• Abnormal resistance (other than 1.4— 3.9 ohms) detected in the passenger-side side air bag module

circuit

• Malfunction in the wiring harness between the passenger-side side air bag module and SAS control

module

POSSIBLE

CAUSE

• Open or short circuit in the wiring harness between the passenger-side side air bag module and SAS

control module

• Passenger-side side air bag module malfunction

• SAS control module malfunction

PASSENGER-SIDE SIDE AIR BAG MODULE

WIRING HARNESS-SIDE CONNECTOR

1871-1U-06B(08-02).fm 30 ページ２００６年３月１５日　水曜日　午前１１時３３分

Content .. 306 307 308 309 ..