Driver Air bag module (hereinafter referred to DAB) located at center of steering wheel protects driver by reducing impact of collision. DAB is consist of air bag, pat cover and inflator. There are power,circuit for ignition, gas generator and diffuser screen in inflator. Air bag reduces impact of collision by fillied up gas. In collision, pat cover splits and through this crack, air bag emerges and deploys. Inflator generates gas that expands air bag. Clock spring is located between steering wheel and column. It connects SRSCM to DAB.
Never measure resistance of DAB directly, Current of measuring device may cause unexpected air bag deploy.
The SRSCM sets DTC B1349 if there is a short to power in DAB harness
*In this case, SRSCM checks if there’s any fault in circuit by sending current for a while.
Item | Detecting Condition | Possible Cause | |
DTC Strategy | ● Check Resistance | ● Short to power in DAB harness. ● Poor connection of connected part. ● Faulty DAB. ● Faulty Clock spring. ● Faulty SRSCM. | |
Enable Conditions | ● Ignition "ON" | ||
Threshold Value | ● Rs ＜ 1㏀ | ||
Diagnostic Time | Qualification | ● More than 1 sec | |
De-Qualification | ● More than 2 sec | ||
Test Condition | Resistance |
Ignition ON | RS ＞10㏀ |
