Mazda CX-9 Grand Touring. Manual — part 19

DIAGNOSTIC PROCEDURE

DTC B1868 DIAGNOSTIC PROCEDURE



Air bag warning system light malfunction.

STEP

INSPECTION

ACTION

1

VERIFY THAT SAS CONTROL MODULE
CONNECTOR IS CONNECTED



Turn the ignition switch to LOCK position.



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



Are all SAS control module connectors
securely connected?

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
air bag system service warnings and
cautions before handling the air bag
system components.

(See AIR BAG SYSTEM SERVICE
WARNINGS .)

(See AIR BAG SYSTEM SERVICE
CAUTIONS .)

Yes Go to the next step.

No

Reconnect the connector properly, then

go to the next step.

2

INSPECT DTCS IN SAS CONTROL MODULE



Inspect the DTC for the SAS control module
on-board diagnostic system.



Has DTC U0155, U0073 been recorded in
memory?

Yes

Perform the applicable DTC inspection.
(See DTC TABLE.)

No

Go to the next step.

3

INSPECT INSTRUMENT CLUSTER



Inspect the instrument cluster warning lights
using check code.

(See INSTRUMENT CLUSTER
INPUT/OUTPUT CHECK MODE .)



Are the check results okay?

Yes

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

No

Repair or replace the instrument cluster

according to inspection results.

2008 Mazda CX-9 Grand Touring

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

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Sunday, November 15, 2009 10:18:47 AM

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DTC B1884, B1890

DTC B1884, B1890 DETECTION CONDITION AND POSSIBLE CAUSE

DIAGNOSTIC PROCEDURE

DTC B1884, B1890 DIAGNOSTIC PROCEDURE

DTC

B1884 Passenger air bag deactivation (PAD) indicator circuit open or short to body ground
B1890 Passenger air bag deactivation (PAD) indicator circuit short to power supply

DETECTION

CONDITION



Malfunction in PAD indicator circuit

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.

POSSIBLE

CAUSE



Open or short circuit in wiring harness between information display and SAS control

module



Open circuit in wiring harness between battery and information display



information display malfunction



SAS control module malfunction

STEP

INSPECTION

ACTION

1

INSPECT OPERATION OF PAD INDICATOR



Turn the ignition switch to the ON position.



Does the PAD indicator illuminate?

Yes Go to the next step.

No

Go to Step 5.

INSPECT FUSE

Yes

Install the fuse, then go to the next

2008 Mazda CX-9 Grand Touring

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

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Sunday, November 15, 2009 10:18:47 AM

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© 2005 Mitchell Repair Information Company, LLC.

2



Remove the METER 10 A fuse.



Is the fuse normal?

step.

No

Replace the fuse.

3

INSPECT BATTERY



Measure the battery positive voltage.



Is the voltage 9 V-16 V?

Yes Go to the next step.

No

Battery is malfunctioning Inspect the

charge/discharge system.

4

INSPECT WIRING HARNESS BETWEEN
BATTERY AND PAD INDICATOR



Turn the ignition switch to the ON position.



Measure the information display connector
terminal E voltage.



Is the voltage 9 V or more?

Yes Go to the next step.

No

Repair the wiring harness between the

battery and information display.

5

INSPECT WIRING HARNESS BETWEEN PAD
INDICATOR 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

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 AIR BAG SYSTEM SERVICE
WARNINGS .)

(See AIR BAG SYSTEM SERVICE
CAUTIONS .)

Yes 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 75

© 2005 Mitchell Repair Information Company, LLC.

DTC B2290

DTC B2290 DETECTION CONDITION AND POSSIBLE CAUSE

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 information
display connector terminal K and SAS control
module connector terminal 1G for the
following:



Short to ground



Short to power supply



Open circuit



Is the wiring harness normal?

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 INFORMATION DISPLAY
REMOVAL/INSTALLATION .)

No

Replace the SAS control module. (See

SAS CONTROL MODULE

REMOVAL/INSTALLATION .)

DTC B2290

Seat weight sensor signal 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.

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 76

© 2005 Mitchell Repair Information Company, LLC.