Diesel Data: Automotive Repair

Stop Light Switch Circuit

CIRCUIT DESCRIPTION
The purpose of this circuit is to prevent the engine from stalling when the brakes are suddenly applied while driving in lock-up condition. When the brake pedal is operated, this switch sends a signal to the ECU. Then the Electronic Control Unit (ECU) cancels operation of the lock-up clutch while braking is in progress.




DIAGNOSTIC CHART




WIRING DIAGRAM










INSPECTION PROCEDURE