Conditions to Activate the Warning Chime

When the passive restraint module determines that a warning is required, the audible chime output (pin 1N) supplies a ground to the warning chime module.

When the ignition key is in the ON position (pin 2C high), and either shoulder belt is spooled in (pin 2B or 1O floating/not grounded), the chime output is activated (pin 1N grounded) for five seconds. If this output has been triggered and timed out, it can be triggered again by spooling in the other shoulder belt (floating/grounding pin 2B or 1O).