Description

• Air bag system warning light is illuminated constantly and remains illuminated after 6 s have elapsed.

Possible cause

• Weak battery

• SAS control module connectors are poorly connected

• Instrument cluster connector is poorly connected

• SAS control module malfunction

• Instrument cluster malfunction

• SAS control module power supply circuit malfunction

• Short to ground in wiring harness between SRS1 7.5 A fuse and SAS control module terminal 2AD

• SRS1 7.5 A fuse malfunction

• Open circuit in wiring harness between IG1 relay and SAS control module terminal 2AD

Step

Inspection

Action

1

• Measure the voltage of battery.

• Is the voltage 8 V or more?

Yes

Go to the next step.

No

Battery is weak.

Inspect charge/discharge system, then go to Step 8.

(See BATTERY INSPECTION.)

2

WARNING:

• Handling the component parts improperly can accidentally operate (deploy) the air bag module, which may seriously injure you. Read the service warnings/cautions and the workshop manual before handling the air bag system components.

  (See AIR BAG SYSTEM SERVICE WARNINGS [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)(See AIR BAG SYSTEM SERVICE WARNINGS [STANDARD DEPLOYMENT CONTROL SYSTEM].)

  (See AIR BAG SYSTEM SERVICE CAUTIONS [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)(See AIR BAG SYSTEM SERVICE CAUTIONS [STANDARD DEPLOYMENT CONTROL SYSTEM].)

• Switch the ignition off.

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

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

• Remove the back trim.

  (See BACK TRIM REMOVAL/INSTALLATION.)

• Are all SAS control module connectors securely connected?

Yes

Go to the next step.

No

Reconnect the connector properly, then go to Step 8.

3

• Disconnect the instrument cluster connector.

  (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

• Are all instrument cluster connectors securely connected?

Yes

Go to the next step.

No

Reconnect the connector properly, then go to Step 8.

4

• Connect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

• Switch the ignition ON (engine off or on).

• Clear the DTC for the SAS control module using the M-MDS.

  (See CLEARING DTC [SAS CONTROL MODULE (STANDARD DEPLOYMENT CONTROL SYSTEM)].)

  (See CLEARING DTC [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)].)

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

  (See CLEARING DTC [SAS CONTROL MODULE (STANDARD DEPLOYMENT CONTROL SYSTEM)].)

  (See DTC INSPECTION [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)].)

• Have DTCs been recorded in memory?

Yes

Perform the applicable DTC inspection, then go to Step 8.

(See DTC TABLE [SAS CONTROL MODULE (STANDARD DEPLOYMENT CONTROL SYSTEM)].)

(See DTC TABLE [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)].)

No

Go to the next step.

5

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

  (See DTC INSPECTION [INSTRUMENT CLUSTER].)

• Have DTCs been recorded in memory?

Yes

Perform the applicable DTC inspection, then go to Step 8.

(See DTC TABLE [INSTRUMENT CLUSTER].)

No

Go to the next step.

6

• Turn on all warning lights and indicator lights using the instrument cluster PID WL+IL of simulation function using the M-MDS.

  (See ACTIVE COMMAND MODES INSPECTION [INSTRUMENT CLUSTER].)

• Do other warning and indicator lights illuminate?

Yes

Go to the next step.

No

Repair the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

Then go to Step 8.

7

WARNING:

• Handling the component parts improperly can accidentally operate (deploy) the air bag module, which may seriously injure you. Read the service warnings/cautions and the workshop manual before handling the air bag system components.

  (See AIR BAG SYSTEM SERVICE WARNINGS [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)(See AIR BAG SYSTEM SERVICE WARNINGS [STANDARD DEPLOYMENT CONTROL SYSTEM].)

  (See AIR BAG SYSTEM SERVICE CAUTIONS [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)(See AIR BAG SYSTEM SERVICE CAUTIONS [STANDARD DEPLOYMENT CONTROL SYSTEM].)

• Switch the ignition off.

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

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

• Remove the column cover.

  (See COLUMN COVER REMOVAL/INSTALLATION.)

• Disconnect the clock spring connector.

  (See CLOCK SPRING REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)

  (See CLOCK SPRING REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM].)

• Remove the passenger-side lower panel.

  (See PASSENGER-SIDE LOWER PANEL REMOVAL/INSTALLATION.)

• Disconnect the passenger-side air bag module connector.

  (See PASSENGER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)

• Disconnect the driver and passenger-side seat connectors.

  (See SEAT REMOVAL/INSTALLATION.)

• Remove the back trim.

  (See BACK TRIM REMOVAL/INSTALLATION.)

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

  (See SEAT BELT REMOVAL/INSTALLATION.)

• Disconnect the driver and passenger-side lap pre-tensioner seat belt connectors. (with lap pre-tensioner seat belt)

  (See SEAT BELT REMOVAL/INSTALLATION.)

• Disconnect all SAS control module connectors.

  (See SAS CONTROL MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)

  (See SAS CONTROL MODULE REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM]

• Connect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

• Switch the ignition ON (engine off or on).

• Measure the voltage at SAS control module at wiring harness-side connector terminal 2AD.

• Is the voltage 8 V???16V?

Yes

Go to the next step.

No

Inspect the SRS1 7.5 A fuse.

• If a fuse is burnt out:

• Repair or replace the wiring harness which is shorted to ground.

• Replace the fuse.

• Replace the fuse.

• Replace the fuse.

• If the fuse is normal:

• Repair or replace the wiring harness which has an open circuit.

Go to the next step.

8

• Connect the SAS control module connectors.

• Reconnect all disconnected connectors.

• Connect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

• Switch the ignition ON (engine off or on).

• Does the air bag system warning light illuminate for approx. 6 s and turn off?

Yes

Complete troubleshooting, then explain repairs to customer.

No

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