Mazda CX-9 Grand Touring. Manual - part 18

DTC B1231 

DTC B1231 DETECTION CONDITION AND POSSIBLE CAUSE 

DIAGNOSTIC PROCEDURE 

DTC B1231 DIAGNOSTIC PROCEDURE 

DTC B1317, B1318 

DTC B1317, B1318 DETECTION CONDITION AND POSSIBLE CAUSE 

DTC B1231

SAS control module activation (deployment) control freeze

DETECTION 

CONDITION 



SAS control module determined collision  

WARNING:



Detection conditions are for understanding the DTC outline before 
performing an inspection. Performing an inspection with only detection 
conditions may cause injury due to an operating error, or damage the 
system. When performing an inspection, always follow the inspection 
procedure.  

ACTION

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

DTC

B1317 SAS control module power supply voltage increases (18.1 V or more)
B1318 SAS control module power supply voltage decreases (less than 8 V)

DETECTION 

CONDITION 



When the SAS control module power supply voltage is not within 8-18 V.  

WARNING:



Detection conditions are for understanding the DTC outline before performing an 
inspection. Performing an inspection with only 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 battery and SAS control module  



SAS 7.5 A fuse malfunction  



Battery malfunction  



SAS control module malfunction  

 

2008 Mazda CX-9 Grand Touring 

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

  

Microsoft 

 

Sunday, November 15, 2009 10:18:47 AM

Page 69 

© 2005 Mitchell Repair Information Company, LLC. 

DIAGNOSTIC PROCEDURE 

DTC B1317, B1318 DIAGNOSTIC PROCEDURE 

Step

Inspection

Action

1

INSPECT FUSE  



Remove the SAS 7.5 A fuse.  



Is the fuse normal?  

Yes Go to the next step.

No

Replace the fuse.

2

INSPECT BATTERY  



Measure the battery positive voltage.  



Is the voltage 8 V-18 V?  

Yes Go to the next step.

No

The battery has a malfunction. 

Inspect the charge/discharge system.

3

INSPECT WIRING HARNESS BETWEEN 
BATTERY AND FUSE BLOCK  

Yes

Install the fuse, then go to the next 
step.

 

2008 Mazda CX-9 Grand Touring 

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

  

Microsoft 

 

Sunday, November 15, 2009 10:18:47 AM

Page 70 

© 2005 Mitchell Repair Information Company, LLC. 



Turn the ignition switch to the ON position.  



Measure the fuse block terminal H voltage.  



Is the voltage 8 V-18 V?  

No

Repair the wiring harness between the 

battery and fuse block.

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.  



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 

WARNING:



Handling the air bag system components 
improperly can control module. accidentally 
deploy the air bag modules and pre-tensioner 
seat belts, which may seriously injure you. 
Read the service warnings before handling the 
air bag system components. 

(See AIR BAG SYSTEM SERVICE WARNINGS .)

(See AIR BAG SYSTEM SERVICE CAUTIONS .) 

Yes

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

No

Repair the wiring harness between the 

 

2008 Mazda CX-9 Grand Touring 

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

  

Microsoft 

 

Sunday, November 15, 2009 10:18:47 AM

Page 71 

© 2005 Mitchell Repair Information Company, LLC. 

DTC B1342, B1921 

DTC B1342, B1921 DETECTION CONDITION AND POSSIBLE CAUSE 

DIAGNOSTIC PROCEDURE 

DTC B1342, B1921 DIAGNOSTIC PROCEDURE 

DTC B1868 

DTC B1868 DETECTION CONDITION AND POSSIBLE CAUSE 

SEAT BELT REMOVAL/INSTALLATION .) 



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



Connect the negative battery cable.  



Turn the ignition switch to the ON position.  



Measure the voltage at the SAS control module 
terminal 1D.  



Is the voltage 8 V-18 V?  

fuse block and SAS

DTC

B1342 SAS control module (internal circuit abnormal)
B1921 Air bag diagnostic ground circuit open

DETECTION 

CONDITION 



Malfunction in the SAS control module internal circuit  

WARNING:



Detection conditions are for understanding the DTC outline before 
performing an inspection. Performing an inspection with only 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 



SAS control module malfunction  

ACTION

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

DTC B1868

Air bag warning system light malfunction

DETECTION 

CONDITION 

WARNING:



Detection conditions are for understanding the DTC outline before 
performing an inspection. Performing an inspection with only detection 
conditions may cause injury due to an operating error, or damage the 
system. When performing an inspection, always follow the inspection 
procedure.  

 

2008 Mazda CX-9 Grand Touring 

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

  

Microsoft 

 

Sunday, November 15, 2009 10:18:47 AM

Page 72 

© 2005 Mitchell Repair Information Company, LLC.