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NO.1 AIR BAG SYSTEM WARNING LIGHT DOES NOT ILLUMINATE

id0803a3800200

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 (print plate) malfunction • Short to ground circuit in wiring harness between instrument cluster and SAS control module

## Diagnostic Procedure

• When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while doing the inspection to discover whether poor contact points are the cause of any intermittent malfunction. If there is a problem, check to make sure connectors, terminals and wiring harness are connected correctly and undamaged.

Step | Inspection | Action
--- | --- | ---
1 | INSPECT OTHER WARNING AND INDICATOR LIGHT CIRCUITS 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 next step.
No | Inspect the instrument cluster power supply system and ground system, then go to Step 5.
2 | 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 service warnings before handling the air bag system components. (See SERVICE WARNINGS.) (See SERVICE CAUTIONS.) • Turn the ignition switch to the LOCK position. • Disconnect the negative battery cable and wait for more than 1 min. • Remove the column cover. • Disconnect the clock spring connector. • Remove the passenger-side air bag module. (See PASSENGER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION.) • Disconnect the driver and passenger-side side air bag module connectors. (Vehicle with the side air bag) • Remove the C-pillar trims. (Vehicle with the curtain air bag) • Disconnect the driver and passenger-side curtain air bag module connectors. (Vehicles with curtain air bag) • Remove the B-pillar lower trims. (Vehicle with the pre-tensioner seat belt) • Disconnect the driver and passenger-side pre-tensioner seat belt connectors. (Vehicle with the pre-tensioner seat belt) • Remove the console. • Disconnect the SAS control module connector. • Connect the negative battery cable. • Turn the ignition switch to the ON position. • Does 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 next step.
*3 | INSPECT WIRING HARNESS BETWEEN SAS CONTROL MODULE AND INSTRUMENT CLUSTER FOR SHORT TO GROUND • Turn the ignition switch to the LOCK position. • Disconnect the negative battery cable. • Disconnect the instrument cluster connector. • Is there continuity between terminal 1O of instrument cluster connector and ground? | Yes | Replace the air bag wiring harness, then go to Step 5.
No | Go to next step.
4 | INSPECT INSTRUMENT CLUSTER • Connect the instrument cluster connector. • Connect the instrument cluster connector terminal 1O to ground, then reconnect connector. • Connect the negative battery cable. • Does air bag system warning light illuminate with ignition switch ON? | Yes | Replace the instrument cluster, then go to next step. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
No | Go to next step.
5 | CONFIRM THAT MALFUNCTION SYMPTOMS DO NOT RECUR AFTER REPAIR • Turn the ignition switch to the LOCK position. • Disconnect the negative battery cable and wait for more than 1 min. • Connect the SAS control module connector. • Connect the driver and passenger-side pre-tensioner seat belt connectors. (Vehicles with the pre-tensioner seat belt) • Connect the driver and passenger-side curtain air bag module connectors. (Vehicles with curtain air bag) • Connect the driver and passenger-side side air bag module connectors. (Vehicles with side air bag) • Connect the passenger-side air bag module connector. • Connect the clock spring connector. • Connect the negative battery cable. • Turn the ignition switch to the ON position. • Does 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.