Mazda CX 7. Manual - part 310

 

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Mazda CX 7. Manual - part 310

 

 

ON-BOARD DIAGNOSTIC 

08-02–35

08-02

DTC B2229, B2231, B2233, B2235

id080200802200

DTC

B2229

Passenger-side air bag module (inflator No.2) circuit short to body ground

B2231

Passenger-side air bag module (inflator No.2) circuit short to power supply

B2233

Passenger-side air bag module (inflator No.2) circuit resistance high

B2235

Passenger-side air bag module (inflator No.2) 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 passenger-side air bag module 

(inflator No.2) circuit

• Malfunction in the wiring harness between the passenger-side air bag module (inflator No.2) and SAS 

control module

POSSIBLE 

CAUSE

• Open or short circuit in the wiring harness between the passenger-side air bag module (inflator No.2) 

and SAS control module

• Passenger-side air bag module (inflator No.2) malfunction

• SAS control module malfunction

A

B

A

B

PASSENGER-SIDE AIR BAG MODULE 

WIRING HARNESS-SIDE CONNECTOR

(INFLATOR NO.1)

(INFLATOR NO.2)

1871-1U-06B(08-02).fm  35 ページ  2006年3月15日 水曜日 午前11時33分

ON-BOARD DIAGNOSTIC 

08-02–36

Diagnostic procedure

End Of Sie

STEP

INSPECTION

ACTION

1

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_AB2_P

• Is the resistance of the passenger-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 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.

No

Go to the next step.

3

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 B2229, B2231, B2233 and/or 

B2235 indicated?

Yes

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

No

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

4

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 B2229, B2231, B2233 and/or 

B2235 indicated?

Yes

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

No

DTC troubleshooting completed.

1871-1U-06B(08-02).fm  36 ページ  2006年3月15日 水曜日 午前11時33分

ON-BOARD DIAGNOSTIC 

08-02–37

08-02

DTC B2290

id080200802300

DTC B2290

Passenger sensing system malfunction

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.

• Passenger sensing system circuit malfunction

POSSIBLE 

CAUSE

• Seat weight sensor calibration not properly set

• Communication error between SAS control module and seat weight sensor control module

• Seat weight sensor control module internal malfunction

• LH or RH seat weight sensor malfunction

STEP

INSPECTION

ACTION

1

INSPECT SEAT WEIGHT SENSOR CONTROL 
MODULE CONNECTOR

Warning
• Handling the air bag system 

components improperly can 
accidentally operate (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.

• Disconnect the seat weight sensor control 

module connector.

• Is there any malfunction of the seat weight 

sensor control module connector?

Yes

Repair or replace the wiring harness.
After replacement, reperform the DTC inspection and 
verify that no DTCs are displayed.

No

Go to the next step.

2

INSPECTION WIRING HARNESS

• Disconnect the SAS control module 

connector.

• Verify continuity in the following wiring 

harnesses:

— Between SAS control module terminal 1I and 

seat weight sensor control module terminal 
3D

— Between the battery and seat weight sensor 

control module terminal 3A

— Between seat weight sensor control module 

terminal 3B and body ground

• Is the continuity normal?

Yes

Go to the next step.

No

If there is any malfunction in the wiring harnesses, repair 
or replace the applicable wiring harness.
After replacement, reperform the DTC inspection and 
verify that no DTCs are displayed.

3A

3B

*

3D

*

*

SAS CONTROL MODULE WIRING 

HARNESS-SIDE CONNECTOR

SEAT WEIGHT SENSOR CONTROL MODULE 

WIRING HARNESS-SIDE CONNECTOR

1V 1S 1P 1M 1J

1G 1D 1A

1B

1E

1H

1C

1F

1I

1Q

1T

1W

1R

1U

1X

1871-1U-06B(08-02).fm  37 ページ  2006年3月15日 水曜日 午前11時33分

ON-BOARD DIAGNOSTIC 

08-02–38

End Of Sie

DTC B2296

id080200802400

3

INSPECT PASSENGER SENSING SYSTEM

• Connect the seat weight sensor control 

module connector.

• Connect the SAS control module.

• Connect the negative battery cable.

• Verify the following PIDs using the M-MDS.

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

— OCSFLT_COM

— OCSFLT_L

— OCSFLT_MDL

— OCSFLT_R

• Do all PIDs display “OK”?

Yes

Go to the next step.

No

Replace the following parts according to the M-MDS 
screen:

• If OCSFLT_CAL is displayed:

— Perform seat weight sensor calibration (See 08-10-

12 SEAT WEIGHT SENSOR CALIBRATION.)

• If OCSFLT_COM or OCSFLT_MDL is displayed:

— Seat weight sensor control module (See 08-10-11 

SEAT WEIGHT SENSOR CONTROL MODULE 
REMOVAL/INSTALLATION.)

• If OCSFLT_L is displayed:

— Seat weight sensor (LH) (See: 09-13-2 FRONT 

SEAT DISASSEMBLY/ASSEMBLY.)

• If OCSFLT_R is displayed:

— Seat weight sensor (RH) (See 09-13-2 FRONT 

SEAT DISASSEMBLY/ASSEMBLY.)

4

INSPECT SAS CONTROL MODULE

• Reperform the DTC inspection.

• Is DTC B2290 indicated?

Yes

[Present malfunction diangnosis]

• Replace the SAS control module.

(See 08-10-10 SAS CONTROL MODULE REMOVAL/
INSTALLATION.)

[Past malfunction diagnosis]

• DTC troubleshooting completed.

No

DTC troubleshooting completed.

STEP

INSPECTION

ACTION

DTC B2296

Crash zone sensor (communication error, internal circuit abnormal)

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.

• Malfunction in the wiring harness between the crash zone sensor and SAS control module

• Malfunction in the crash zone sensor circuit

POSSIBLE 

CAUSE

• Open or short circuit in the wiring harness between the crash zone sensor and SAS control module

• SAS control module malfunction

• Crash zone sensor malfunction

A

B

1A

1B

1C

1D

1E

1F

1G

1H

1I

1J

1M

1P

1Q

1R

1S

1T

1U

1V

1W

1X

SAS CONTROL MODULE WIRING 

HARNESS-SIDE CONNECTOR

CRASH ZONE SENSOR WIRING 

HARNESS-SIDE CONNECTOR

1871-1U-06B(08-02).fm  38 ページ  2006年3月15日 水曜日 午前11時33分

 

 

 

 

 

 

 

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