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Mazda CX-9 Grand Touring. Manual - part 8

DIAGNOSTIC PROCEDURE

DTC B1049, B1881, B1882, B1883, B1886 DIAGNOSTIC PROCEDURE

STEP

INSPECTION

ACTION

INSPECT PASSENGER-SIDE PRE-TENSIONER
SEAT BELT



Using the M-MDS, verify the following
PID/DATA monitor.

(See PID/DATA MONITOR TABLE.)



RES_PT_P



Is the resistance of the passenger-side pre-
tensioner seat belt normal?



Resistance: 1.0-9.7 ohms

Yes

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

Go to the next step.

INSPECT PASSENGER-SIDE PRE-TENSIONER
SEAT BELT 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
WARNINGS .)

Yes Replace the air bag wiring harness.

2008 Mazda CX-9 Grand Touring

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

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Sunday, November 15, 2009 10:18:46 AM

Page 29



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 pre-tensioner
seat belt connector. (See FRONT SEAT BELT
REMOVAL/INSTALLATION .)



Is there any malfunction of the passenger-side
pre-tensioner seat belt connector?

(See AIR BAG SYSTEM SERVICE
CAUTIONS .)

Go to the next step.

VERIFY WHETHER MALFUNCTION IS IN
PASSENGER-SIDE PRE-TENSIONER SEAT
BELT OR RELATED WIRING HARNESS



Connect the leads of the SST (Fuel and
thermometer checker) or apply 2-ohm
resistance to passenger-side pre-tensioner seat
belt 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 B1049, B1881, B1882, B1883,
and/or B1886 indicated?

Yes Go to the next step.

Replace the passenger-side pre-

tensioner seat belt. (See FRONT

SEAT BELT

REMOVAL/INSTALLATION .)

INSPECT WIRING HARNESS BETWEEN
PASSENGER-SIDE PRE-TENSIONER SEAT
BELT 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

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 30

DTC B104B, B104E, B1051, U2017

DTC B104B, B104E, B1051, U2017 DETECTION CONDITION AND POSSIBLE CAUSE

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 .)



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



Inspect the wiring harness between SAS control
module terminal 2E and passenger-side pre-
tensioner seat belt terminal A, SAS control
module terminal 2A and passenger-side pre-
tensioner seat belt terminal B for the following:



Short to ground



Short to power supply



Open circuit



Is the wiring harness normal?

Yes

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

Replace the air bag wiring harness.

DTC

B104B Driver-side side air bag sensor No.1 and other sensor circuits short to power supply
B104E Driver-side side air bag sensor No.1 circuit open or short

B1051

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

U2017

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

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

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 31

DIAGNOSTIC PROCEDURE

DTC B104B, B104E, B1051, U2017 DIAGNOSTIC PROCEDURE

DETECTION

CONDITION



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



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

performing an inspection, always follow the inspection procedure.

POSSIBLE

CAUSE



Open or short circuit in wiring harness between driver-side side air bag sensor No.1

and SAS control module



Driver-side side air bag sensor No.1 malfunction



SAS control module malfunction

STEP

INSPECTION

ACTION

INSPECT DRIVER-SIDE SIDE AIR BAG
SENSOR NO.1 CONNECTOR

WARNING:



(See AIR BAG SYSTEM SERVICE
WARNINGS .)

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 32

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