Mazda CX-9 Grand Touring. Manual - part 9

 



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 sensor 
No.1 connector.  



Is there any malfunction of the driver-side side 
air bag sensor No.1 connector?  

(See AIR BAG SYSTEM SERVICE 
CAUTIONS .) 

No

Go to the next step.

2

INSPECT WIRING HARNESS BETWEEN 
DRIVER-SIDE SIDE AIR BAG SENSOR NO.1 
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 COLUMN 
COVER REMOVAL/INSTALLATION .)  



Disconnect the clock spring connector. (See 
COMBINATION SWITCH 
REMOVAL/INSTALLATION .)  



Remove the glove compartment. (See GLOVE 
COMPARTMENT 
REMOVAL/INSTALLATION .)  



Disconnect the passenger-side air bag module 
connector. (See PASSENGER-SIDE AIR 
BAG MODULE 
REMOVAL/INSTALLATION .)  



Disconnect the driver and passenger-side front 
seat connectors. (See FRONT SEAT 
REMOVAL/INSTALLATION .)  



Disconnect the driver and passenger-side curtain 
air bag module connectors. (See CURTAIN 
AIR BAG MODULE 
REMOVAL/INSTALLATION .)  



Remove the B-pillar lower trim. (See B-
PILLAR LOWER TRIM 
REMOVAL/INSTALLATION .)  



Disconnect the driver and passenger-side pre-
tensioner seat belt connectors. (See FRONT 
SEAT BELT 
REMOVAL/INSTALLATION .)  

Yes

Replace the driver-side side air bag 
sensor No.1, then go to the next step. 
(See SIDE AIR BAG SENSOR NO. 
1 REMOVAL/INSTALLATION .)

 

2008 Mazda CX-9 Grand Touring 

2008 RESTRAINTS On-Board Diagnostic (Restraints) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:18:46 AM

Page 33 

© 2005 Mitchell Repair Information Company, LLC. 

DTC B104C, B104F, B1050, U2018 

DTC B104C, B104F, B1050, U2018 DETECTION CONDITION AND POSSIBLE CAUSE 



Disconnect the SAS control module connectors. 
(See SAS CONTROL MODULE 
REMOVAL/INSTALLATION .)  



Disconnect the driver-side side air bag sensor 
No.1 connector.  



Inspect the wiring harnesses between SAS 
control module terminal 20 and driver-side side 
air bag sensor No.1 terminal A, SAS control 
module terminal 2S and driver-side side air bag 
sensor No.1 terminal B for the following: 



Short to ground  



Short to power supply  



Open circuit  



Is the wiring harness normal?  

No

Replace the air bag wiring harness.

3

INSPECT SAS CONTROL MODULE  



Connect the SAS control module connector.  



Connect the driver and passenger-side pre-
tensioner seat belt connectors.  



Connect the driver-side side air bag sensor No.1 
connector.  



Connect the driver and passenger-side curtain 
air bag module connectors.  



Connect the driver and passenger-side front seat 
connectors.  



Connect the passenger-side air bag module 
connector.  



Connect the clock spring connector.  



Connect the negative battery cable.  



Turn the ignition switch to the ON position.  



Are DTCs B104B, B104E, B1051 and/or U2017 
indicated?  

Yes

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

No

DTC troubleshooting completed.

DTC

B104C Passenger-side side air bag sensor No.1 and other sensor circuits short to power supply

B104F Passenger-side side air bag sensor No.1 (internal circuit abnormal)

B1050

Passenger-side side air bag sensor No.1 circuit open or short

U2018

Passenger-side side air bag sensor No.1 (communication error)

WARNING:

 

2008 Mazda CX-9 Grand Touring 

2008 RESTRAINTS On-Board Diagnostic (Restraints) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:18:46 AM

Page 34 

© 2005 Mitchell Repair Information Company, LLC. 

DIAGNOSTIC PROCEDURE 

DTC B104C, B104F, B1050, U2018 DIAGNOSTIC PROCEDURE 

DETECTION 

CONDITION 



Malfunction in wiring harness between passenger-side side air bag sensor No.1 and 
SAS control module  



Malfunction in passenger-side side air bag sensor No.1 circuit  



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.  

POSSIBLE 

CAUSE 



Open or short circuit in wiring harness between passenger-side side air bag sensor 

No.1 and SAS control module  



Passenger-side side air bag sensor No.1 malfunction  



SAS control module malfunction  

STEP

INSPECTION

ACTION

INSPECT PASSENGER-SIDE SIDE AIR BAG 
SENSOR 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 AIR BAG SYSTEM SERVICE 

Yes Replace the air bag wiring harness.

 

2008 Mazda CX-9 Grand Touring 

2008 RESTRAINTS On-Board Diagnostic (Restraints) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:18:46 AM

Page 35 

© 2005 Mitchell Repair Information Company, LLC. 

1

 



Turn the ignition switch to the LOCK position.  



Disconnect the negative battery cable and wait 
for 1 min or more.  



Remove the B-pillar lower trim (RH). (See B-
PILLAR LOWER TRIM 
REMOVAL/INSTALLATION .)  



Disconnect the passenger-side side air bag 
sensor No.1 connector. (See SIDE AIR BAG 
SENSOR NO. 1 
REMOVAL/INSTALLATION .)  



Is there any malfunction of the passenger-side 
side air bag sensor No.1 connector?  

WARNINGS .) 

(See AIR BAG SYSTEM SERVICE 
CAUTIONS .) 

No

Go to the next step.

2

INSPECT WIRING HARNESS BETWEEN 
PASSENGER-SIDE SIDE AIR BAG SENSOR 
NO.1 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 COLUMN 
COVER REMOVAL/INSTALLATION .)  



Disconnect the clock spring connector. (See 
COMBINATION SWITCH 
REMOVAL/INSTALLATION .)  



Remove the glove compartment. (See GLOVE 
COMPARTMENT 
REMOVAL/INSTALLATION .)  



Disconnect the passenger-side air bag module 
connector. (See PASSENGER-SIDE AIR 
BAG MODULE 
REMOVAL/INSTALLATION .)  



Disconnect the driver and passenger-side front 
seat connectors. (See FRONT SEAT 
REMOVAL/INSTALLATION .)  



Disconnect the driver and passenger-side curtain 
air bag module connectors. (See CURTAIN 
AIR BAG MODULE 
REMOVAL/INSTALLATION .)  

Yes

Replace the passenger-side side air bag 
sensor No.1, then go to the next step. 
(See SIDE AIR BAG SENSOR NO. 
1 REMOVAL/INSTALLATION .)

 

2008 Mazda CX-9 Grand Touring 

2008 RESTRAINTS On-Board Diagnostic (Restraints) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:18:46 AM

Page 36 

© 2005 Mitchell Repair Information Company, LLC.