Transmission Control System

DTC P1520 Stop Light Switch Signal Malfunction

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





DETECTING CONDITION





WIRING DIAGRAM

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Step 3:

INSPECTION PROCEDURE