1. DTC B0090[09] DTC description
The front airbag sensor detects a frontal collision and converts it into electrical signals. The SRS control unit supplies power to the front airbag sensor. When the front airbag sensor detects an impact more than or equal to a certain level, the impact is converted into electrical signals and transmitted to the SRS control unit. The SRS control unit deploys the SRS airbag according to the signals sent from the front airbag sensor. If the SRS control unit detects a malfunction in the left side front airbag sensor, the DTC is set.
2. Condition for setting DTC B0090[09]
Any of the following conditions are met:
- The SRS control unit detects an abnormal left side front airbag sensor signal.
- The SRS control unit detects a left side front airbag sensor malfunction.
3. Action taken when DTC B0090[09] sets
- SRS airbag warning light illuminates.
- Even if the condition returns to normal, the warning light does not turn OFF until the DTC is cleared.
Warning
- During the maintenance work, do not hit or shake the SRS control unit when handling it.
- If the SRS control unit is not properly installed, the SRS control unit may cause malfunctions. This may result in deployment of the SRS airbag and personal injury.
Caution
- To prevent the SRS parts to be replaced from malfunctioning and generating a battery short circuit, make sure to disconnect the battery cable before replacing the parts.