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Mazda CX 7. Manual - part 315

SYMPTOM TROUBLESHOOTING

08-03–3

08-03

End Of Sie

NO.2 AIR BAG SYSTEM WARNING LIGHT ILLUMINATES CONSTANTLY

id080300800300

Diagnostic Procedure

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.

Recheck malfunction symptoms, then repeat from Step 1 if
malfunction recurs.

STEP

INSPECTION

ACTION

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).

POSSIBLE

CAUSE

• Weak battery

• SAS control module malfunction

• Instrument cluster (circuit board) malfunction

• No connection in SAS control module connector

• Poor contact in instrument cluster connector (20-pin)

• Open or short to power supply circuit in wiring harness between instrument cluster and SAS control

module

• Poor contact at terminals 1X and/or 1W of SAS control module connector

• Poor contact in wiring harness between terminal 1X of SAS control module connector and ground

• Poor contact in wiring harness between battery and terminal 1W of SAS control module

STEP

INSPECTION

ACTION

INSPECT BATTERY

• Measure the voltage of battery.

• Is the voltage 9 V or more?

Yes

Go to the next step.

Battery is weak.
Inspect charge/discharge system, then go to Step 10.
(See 01-17-2 BATTERY INSPECTION[L3 WITH TC].)

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SYMPTOM TROUBLESHOOTING

08-03–4

VERIFY THAT SAS CONTROL MODULE
CONNECTOR IS 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 08-10-3 AIR BAG SYSTEM
SERVICE WARNINGS.)
(See 08-10-5 AIR BAG SYSTEM
SERVICE CAUTIONS.)

• Turn the ignition switch to LOCK position.

• Disconnect the negative battery cable and

wait for 1 min or more.

• Remove the console. (See 09-17-13

CONSOLE REMOVAL/INSTALLATION.)

• Are all SAS control module connectors

securely connected?

Yes

Go to the next step.

Reconnect the connector properly, then go to Step 10.

INSPECT DTCS IN INSTRUMENT CLUSTER

• Inspect the DTC for the instrument cluster

on-board diagnostic system.

• Has DTC U0264 been recorded in memory?

Yes

Go to the next step.

Inspect the instrument cluster. (See 09-22-3 INSTRUMENT
CLUSTER INSPECTION.)

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 10.
(See 08-02-4 DTC TABLE.)

Go to the next step.

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 Step 10.
(See 09-02E-1 DTC TABLE[INSTRUMENT CLUSTER].)

Go to the next step.

INSPECT INSTRUMENT CLUSTER

• Inspect the instrument cluster warning lights

using check code.
(See 09-22-5 INSTRUMENT CLUSTER
INPUT/OUTPUT CHECK MODE.)

• Are the check results okay?

Yes

Go to the next step.

Repair or replace the instrument cluster according to
inspection results.
Then go to Step 10.

INSPECT POWER SUPPLY CIRCUIT OF SAS
CONTROL MODULE (TERMINAL 1W)

• 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.

• Inspect the voltage for PID/DATA monitor

IGN_V_2 item using M-MDS.

• Is the voltage of at least one terminal 8 V—

16 V?

Yes

Go to the Step 9.

Go to the next step.

STEP

INSPECTION

ACTION

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SYMPTOM TROUBLESHOOTING

08-03–5

08-03

End Of Sie

INSPECT WIRING HARNESS BETWEEN
BATTERY AND FUSE BLOCK

• Connect the negative battery cable.

• Turn the ignition switch to ON position.

• Measure the voltage at instrument cluster

connector terminal 2G.

• Is the voltage 8 V— 16 V?

Yes

Go to the next step.

Repair the wiring harnesses, then go to Step 10.

VERIFY THAT SAS CONTROL MODULE
CONNECTOR TERMINAL 1X IS GROUND

• Turn the ignition switch to LOCK position.

• Disconnect the negative battery cable and

wait for 1 min or more.

• Remove the column cover. (See 09-17-8

COLUMN COVER REMOVAL/
INSTALLATION.)

• Disconnect the clock spring connector.

• Remove the glove compartment. (See 09-17-

8 GLOVE COMPARTMENT REMOVAL/
INSTALLATION.)

• Disconnect the passenger-side air bag

module connector.

• Disconnect the driver and passenger-side

side air bag module connectors.

• Remove the C-pillar trims. (See 09-17-17 C-

PILLAR TRIM REMOVAL/INSTALLATION.)

• Remove the D-pillar trims. (See 09-17-18 D-

PILLAR TRIM REMOVAL/INSTALLATION.)

• Disconnect the driver and passenger-side

curtain air bag module connectors.

• Remove the B-pillar lower trims. (See 09-17-

16 B-PILLAR LOWER TRIM REMOVAL/
INSTALLATION.)

• Disconnect the driver and passenger-side

pre-tensioner seat belt connectors.

• Remove the console. (See 09-17-13

CONSOLE REMOVAL/INSTALLATION.)

• Disconnect all SAS control module control

model connectors.

• Inspect the wiring harness between SAS

control module connector terminal 1X and
ground for the following:
— Short to power supply

— Open circuit

• Is the wiring harness normal?

Yes

Replace the SAS control module, then go to the next step.
(See 08-10-10 SAS CONTROL MODULE REMOVAL/
INSTALLATION.)

Replace the wiring harnesses, then go to the next step.

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 instrument cluster 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.

Recheck malfunction symptoms, then repeat from Step 1 if
malfunction recurs.

STEP

INSPECTION

ACTION

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