Engine Control System

DTC P1520 Stop Light Switch Signal Malfunction

CIRCUIT DESCRIPTION
This signal is used to detect when the brakes have been applied. The STP signal voltage is the same as the voltage supplied to the stop lights.
The STP signal is used mainly to control the fuel cut-off engine speed. (The fuel cut-off engine speed is reduced slightly when the vehicle is braking.)





DETECTING CONDITION





WIRING DIAGRAM

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INSPECTION PROCEDURE