NO.1 AIR BAG SYSTEM WARNING LIGHT DOES NOT ILLUMINATE

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.
3	PERFORM DTC INSPECTION • Perform the DTC inspection using the M-MDS with the SAS control module. (See DTC DISPLAY.) • Is DTC U0151 displayed?	Yes	Go to the applicable DTC inspection.
No	Go to the next step.
4	INSPECT SAS CONTROL MODULE 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.) • 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?	Yes	Replace the SAS control module, then go to Step 5. (See SAS CONTROL MODULE REMOVAL/INSTALLATION.)
No	Go to the next step.
5	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.)
6	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.

STEP

INSPECTION

ACTION

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.

Inspect the instrument cluster power supply system and ground system, then go to Step 4.

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.)

Go to the next step.

PERFORM DTC INSPECTION

• Perform the DTC inspection using the M-MDS with the SAS control module.

(See DTC DISPLAY.)

• Is DTC U0151 displayed?

Yes

Go to the applicable DTC inspection.

Go to the next step.

INSPECT SAS CONTROL MODULE

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.)

• 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?

Yes

Replace the SAS control module, then go to Step 5.

(See SAS CONTROL MODULE REMOVAL/INSTALLATION.)

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 the next step.

(See DTC TABLE [INSTRUMENT CLUSTER].)

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

(See INSTRUMENT CLUSTER INPUT/OUTPUT CHECK MODE.)

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.

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 • Communication error between the instrument cluster and the SAS control module