Function of SRS Warning Light

FUNCTION OF SRS WARNING LIGHT

a. Primary check
1. Turn the ignition switch to the LOCK position. Wait 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 diagnosis of the SRS airbag system (including the seat belt) is performed.

HINT: If trouble is detected during the primary check, the SRS warning light remains on or blinks even after the primary check period (approximately 6 seconds) has elapsed.

b. Constant check
1. After the primary check, the center airbag sensor assembly activates the SRS airbag system and constantly monitors it for trouble.

HINT: If malfunctions are detected during the constant check, the center airbag sensor 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.