NO.1 AIR BAG SYSTEM WARNING LIGHT DOES NOT ILLUMINATE

id080300800200

1 | Air bag system warning light does not illuminate.
DESCRIPTION | Air bag system warning light does not illuminate while the air bag system is performing initialization.
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

Diagnostic Procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT OTHER WARNING AND INDICATOR LIGHTS CIRCUIT IN INSTRUMENT CLUSTER • Switch the ignition to on. • Do other warning and indicator lights illuminate? | Yes | Turn the ignition switch to the OFF 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.) • Switch the ignition to off. • 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. • Switch the ignition to on. • 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 • Switch the ignition to off. • Disconnect the negative battery cable and wait for 1 min or more. • Connect all disconnected SAS system connectors during diagnosis. • Connect the negative battery cable. • Switch the ignition to on. • 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.