Function of SRS Warning Light
FUNCTION OF SRS WARNING LIGHTa. Primary check.
1. Turn the ignition switch to the LOCK position. Wait for at least 2 seconds, then turn the ignition switch to the ON position. The SRS warning light comes on for approximately 6 seconds and the SRS airbag system diagnosis (including the seat belt pretensioner and occupant classification system) is performed.
HINT: If any malfunctions are detected during the primary check, the SRS warning light remains on even after the primary check period (for approximately 6 seconds) has elapsed.
b. Constant check.
1. After the primary check, the airbag sensor assembly center constantly monitors the SRS airbag system for trouble.
HINT: If any malfunctions are detected during the constant check, the airbag sensor assembly center functions as follows:
- Illuminates the SRS warning light.
- Turns the SRS warning light off, and then Illuminates it again. This blinking pattern indicates the source voltage drop. The SRS warning light turns off 10 seconds after the source voltage returns to normal.
c. Review.
1. When the airbag system is normal:
The SRS warning light comes on only during the primary check period (for approximately 6 seconds after the ignition switch is turned to the ON position).
2. When the airbag system malfunctions:
- The SRS warning light remains on even after the primary check period has elapsed.
- The SRS warning light turns off after the primary check, but comes on again during the constant check.
- The SRS warning light remains off when the ignition switch is turned from the LOCK to ON positions.
HINT: The airbag sensor assembly center keeps the SRS warning light on if the airbag has been deployed.