Brake light switch
The brake light switch supplies the control module and the shift-lock relay with information.
Depressing the brake pedal will activate the brake light switch and send information to the control module, which will disengage the lock-up function if the engine speed is below 2000 RPM.
The shift-lock function mechanically locks the gear lever in the P position when the engine is being started. Depressing the brake pedal activates the shift-lock relay and releases the mechanical lock.