1. DTC B1900[00] DTC description
The SRS control unit is embedded with a G sensor that converts an impact into electrical signals. The electrical signals from the built-in G sensor and front airbag sensor are processed by the SRS control unit and then compared with the values recorded in the memory. When the emitted signals exceed the specified value, the SRS control unit sends a current to the SRS airbags and pretensioners, deploying the SRS airbags and pretensioners and setting the DTC.
2. Condition for setting DTC B1900[00]
- The SRS control unit detects a frontal collision greater than a predetermined level.
3. Action taken when DTC B1900[00] 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
- When this DTC is set, all SRS system components, such as the SRS control unit, SRS airbag, and seat belt with pretensioner, must be replaced.
- This DTC cannot be cleared.
- 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.