B Series Truck 2WD L4-2184cc 2.2L 2200 2-bbl (1990)
Brake Light Switch: Description and Operation
When the service brake is applied, the stop light switch sends a signal to the ECU in addition to illuminating the brake lights. The ECU reads this signal
as a deceleration indicator and utilizes it to regulate fuel injector "ON" time during this operating phase.
