Mazda CX 7. Manual - part 307

 

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Mazda CX 7. Manual - part 307

 

 

ON-BOARD DIAGNOSTIC 

08-02–23

08-02

End Of Sie

5

INSPECT WIRING HARNESS BETWEEN PAD 
INDICATOR AND SAS CONTROL MODULE

Warning
• Handling the air bag system components 

improperly can accidentally deploy the air 
bag modules and pre-tensioner front 
buckles, which may seriously injure you. 
Read the service warnings 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 column cover. (See 09-17-8 

COLUMN COVER REMOVAL/INSTALLATION.)

• Disconnect the clock spring connector.

• Remove the glove compartment.(See 09-17-8 

GLOVE COMPARTMENT REMOVAL/
INSTALLATION.)

• Disconnect the passenger-side air bag module 

connector.

• Disconnect the driver and passenger-side seat 

connectors.

• Remove the C-pillar trim. (See 09-17-17 C-

PILLAR TRIM REMOVAL/INSTALLATION.)

• Remove the D-pillar trim. (See 09-17-18 D-

PILLAR TRIM REMOVAL/INSTALLATION.)

• Disconnect the driver and passenger-side 

curtain air bag module connector.

• Remove the B-pillar lower trim. (See 09-17-16 B-

PILLAR LOWER TRIM REMOVAL/
INSTALLATION.)

• Disconnect the driver and passenger-side pre-

tensioner seat belt connectors.

• Remove the console. (See 09-17-13 CONSOLE 

REMOVAL/INSTALLATION.)

• Disconnect the SAS control module connector.

• Inspect the wiring harness between information 

display connector terminal I and SAS control 
module connector terminal 1U for the following:
— Short to ground

— Short to power supply

— Open circuit

• Is the wiring harness normal?

Yes

Go to the next step.

No

Replace the air bag wiring harness.

6

INSPECT PAD INDICATOR

• Disconnect the SAS control module connector.

• Connect the information display connector.

• Does the PAD indicator illuminate?

Yes

Replace the information display. 
(See 09-22-15 INFORMATION DISPLAY REMOVAL/
INSTALLATION.)

No

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

STEP

INSPECTION

ACTION

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ON-BOARD DIAGNOSTIC 

08-02–24

DTC B1913, B1916, B1932, B1934

id080200801700

DTC

B1913

Driver-side air bag module (inflator No.1) circuit short to body ground (air bag system warning light 
DTC 19 is displayed.)

B1916

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

B1932

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

B1934

Driver-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— 3.9 ohms) detected in the driver-side air bag module (inflator 

No.1) circuit

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

control module

POSSIBLE 

CAUSE

• Open or short circuit in the wiring harness between the clock spring and SAS control module

• Clock spring malfunction

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

• SAS control module malfunction

1V 1S 1P 1M 1J

1G 1D

1D 1C 1B 1A

3A

3B

4A

4B

1A

1B

1E

1H

1C

1F

1I

1Q

1T

1W

1R

1U

1X

SAS CONTROL MODULE WIRING 

HARNESS-SIDE CONNECTOR

CLOCK SPRING WIRING 

HARNESS-SIDE CONNECTOR

DRIVER-SIDE AIR BAG MODULE 

WIRING HARNESS-SIDE CONNECTOR 

(CLOCK SPRING )

(INFLATOR NO.1)

(INFLATOR NO.2)

1871-1U-06B(08-02).fm  24 ページ  ２００６年３月１５日　水曜日　午前１１時３３分

ON-BOARD DIAGNOSTIC 

08-02–25

08-02

Diagnostic procedure

STEP

INSPECTION

ACTION

1

INSPECT DRIVER-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_D

• Is the resistance of the driver-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.)

No

Go to the next step.

2

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

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 driver-side air bag module.

(See 08-10-6 DRIVER-SIDE AIR BAG 
MODULE REMOVAL/INSTALLATION.)

• Is there any malfunction of the driver-side air 

bag module connector?

Yes

Replace the air bag wiring harness.

No

Go to the next step.

3

VERIFY WHETHER MALFUNCTION IS IN 
DRIVER-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 driver-side air bag module 
(inflator No.1) connector terminals 3A and 
3B, and driver-side air bag module (inflator 
No.2) connector terminals 4A and 4B.

• 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, B1916, B1932 and/or 

B1934 indicated?

Yes

Go to the next step.

No

Replace the driver-side air bag module.
(See 08-10-6 DRIVER-SIDE AIR BAG MODULE 
REMOVAL/INSTALLATION.)

4

INSPECT CLOCK SPRING

• Inspect the clock spring.

(See 08-10-16 CLOCK SPRING 
INSPECTION.)

• Is the clock spring normal?

Yes

Go to the next step.

No

Replace the clock spring.
(See 08-10-15 CLOCK SPRING REMOVAL/
INSTALLATION.)

1871-1U-06B(08-02).fm  25 ページ  ２００６年３月１５日　水曜日　午前１１時３３分

ON-BOARD DIAGNOSTIC 

08-02–26

End Of Sie

5

INSPECT WIRING HARNESS BETWEEN 
CLOCK SPRING AND SAS CONTROL 
MODULE

• Turn the ignition switch to the LOCK position.

• Disconnect the negative battery cable and 

wait for 1 min or more.

• Remove the column cover. (See 09-17-8 

COLUMN COVER REMOVAL/
INSTALLATION.)

• Disconnect the clock spring connector.

• Remove the glove compartment.(See 09-17-

8 GLOVE COMPARTMENT REMOVAL/
INSTALLATION.)

• Disconnect the passenger-side air bag 

module connector.

• Disconnect the driver and passenger-side 

seat connectors.

• Remove the C-pillar trim. (See 09-17-17 C-

PILLAR TRIM REMOVAL/INSTALLATION.)

• Remove the D-pillar trim. (See 09-17-18 D-

PILLAR TRIM REMOVAL/INSTALLATION.)

• Disconnect the driver and passenger-side 

curtain air bag module connector.

• Remove the B-pillar lower trim. (See 09-17-

16 B-PILLAR LOWER TRIM REMOVAL/
INSTALLATION.)

• Disconnect the driver and passenger-side 

pre-tensioner seat belt connectors.

• Remove the console. (See 09-17-13 

CONSOLE REMOVAL/INSTALLATION.)

• Disconnect the SAS control module 

connector.

• Inspect the wiring harness between SAS 

control module terminal 1S and clock spring 
terminal 1D, SAS control module terminal 1V 
and clock spring terminal 1C for the 
following: 

— Short to ground

— Short to power supply

— Open circuit

• Is the wiring harness normal?

Yes

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

No

Replace the air bag wiring harness.

STEP

INSPECTION

ACTION

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