Function of SRS Warning Light
FUNCTION OF SRS 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) is performed.
HINT: If trouble is detected during the primary check, the SRS warning light remains on even after the primary check period (approximately 6 seconds) has elapsed.
b. Constant check
1. After the primary check, the center airbag sensor assembly constantly monitors the SRS airbag system for trouble.
HINT: If trouble is detected during the constant check, the center airbag sensor assembly functions as follows:
- The SRS warning light comes on or blinks.
- The SRS warning light comes on, and then goes off. This blinking pattern indicates the source voltage drop.
- The SRS warning light goes 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 has trouble:
- The SRS warning light remains on or blinks even after the primary check period has elapsed.
- The SRS warning light goes off after the primary check, but comes on or blinks again during the constant check.
- The SRS warning light does not come on when turning the ignition switch from the LOCK to ON position.
HINT: The center airbag sensor assembly keeps the SRS warning light on if the airbag has been deployed.