Mazda CX-9 Grand Touring. Manual — part 22

Fig. 1: Air Bag System Wiring Diagram
Courtesy of MAZDA MOTORS CORP.

2008 Mazda CX-9 Grand Touring

2008 RESTRAINTS Symptom Troubleshooting (Restraints) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:17:14 AM

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© 2005 Mitchell Repair Information Company, LLC.

TROUBLESHOOTING INDEX



Use the chart below verify the symptoms of the trouble in order to diagnose the appropriate area.

TROUBLESHOOTING INDEX

NO.1 AIR BAG SYSTEM WARNING LIGHT DOES NOT ILLUMINATE

AIR BAG SYSTEM WARNING LIGHT DOES NOT ILLUMINATE - DETECTION CONDITION
AND POSSIBLE CAUSE CHART

DIAGNOSTIC PROCEDURE

DIAGNOSTIC PROCEDURE

No.

Troubleshooting item

Description

Page

1

Air bag system warning
light does not illuminate.

Malfunction in air bag system
warning light circuit (short to
ground).

(See NO.1 AIR BAG SYSTEM
WARNING LIGHT DOES NOT
ILLUMINATE)

2

Air bag system warning
light is illuminated
constantly.

Malfunction in air bag system
warning light circuit (open circuit
or short to power supply).

(See NO.2 AIR BAG SYSTEM
WARNING LIGHT
ILLUMINATES CONSTANTLY)

1

Air bag system warning light does not illuminate.

DETECTION

CONDITION

Malfunction in air bag system warning light circuit (short to ground)

POSSIBLE CAUSE



SAS control module malfunction



Instrument cluster (circuit board) malfunction



Short to ground circuit in wiring harness between instrument cluster and
SAS control module

STEP

INSPECTION

ACTION

1

INSPECT OTHER WARNING AND INDICATOR
LIGHTS CIRCUIT IN INSTRUMENT CLUSTER



Turn the ignition switch to the ON position.



Do other warning and indicator lights illuminate?

Yes

Turn the ignition switch to the LOCK
position, then go to the next step.

No

Inspect the instrument cluster power

supply system and ground system,

then go to Step 4.

2

INSPECT DTCS IN SAS CONTROL MODULE



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



Have DTCs been recorded in memory?

Yes

Perform the applicable DTC
inspection, then go to Step 5. (See
DTC TABLE .)

No

Go to the next step.

INSPECT SAS CONTROL MODULE

WARNING:



Handling the air bag system components

2008 Mazda CX-9 Grand Touring

2008 RESTRAINTS Symptom Troubleshooting (Restraints) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:17:14 AM

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© 2005 Mitchell Repair Information Company, LLC.

3



Turn the ignition switch to 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 .)



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



Connect the negative battery cable.



Turn the ignition switch to ON position.



Does the air bag system warning light
illuminate?

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

Replace the SAS control module, then
go to Step 5. (See SAS CONTROL
MODULE
REMOVAL/INSTALLATION .)

No

Go to the next step.

2008 Mazda CX-9 Grand Touring

2008 RESTRAINTS Symptom Troubleshooting (Restraints) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:17:14 AM

Page 4

© 2005 Mitchell Repair Information Company, LLC.

NO.2 AIR BAG SYSTEM WARNING LIGHT ILLUMINATES CONSTANTLY

AIR BAG SYSTEM WARNING LIGHT ILLUMINATES CONSTANTLY - DETECTION CONDITION
AND POSSIBLE CAUSE CHART

4

INSPECT DTCS IN INSTRUMENT CLUSTER



Inspect the DTC for the instrument cluster on-
board diagnostic system.



Have DTCs been recorded in memory?

Yes

Perform the applicable DTC
inspection, then go to the next step.
(See DTC TABLE [INSTRUMENT
CLUSTER] .)

No

Inspect the instrument cluster warning
lights using check code, then go to the

next step.

(See INSTRUMENT CLUSTER

INPUT/OUTPUT CHECK

MODE .)

5

CONFIRM THAT MALFUNCTION SYMPTOMS
DO NOT RECUR AFTER REPAIR



Turn the ignition switch to LOCK position.



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



Connect all SAS control module connectors.



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



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 ON position.



Does the air bag system warning light operate
properly?

Yes

Complete troubleshooting, then
explain repairs to customer.

No

Recheck malfunction symptoms, then

repeat from Step 1 if malfunction

recurs.

2

Air bag system warning light is illuminated constantly.

DETECTION

CONDITION

Malfunction in air bag system warning light circuit (open circuit or short to
power supply).



Weak battery



SAS control module malfunction



Instrument cluster (circuit board) malfunction



No connection in SAS control module connector



Poor contact in instrument cluster connector

2008 Mazda CX-9 Grand Touring

2008 RESTRAINTS Symptom Troubleshooting (Restraints) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:17:14 AM

Page 5

© 2005 Mitchell Repair Information Company, LLC.