Toyota Camry Manual page 1450

DTC P1520
CIRCUIT DESCRIPTION
The purpose of this circuit is to prevent the engine from stalling, while driving in lock–up condition, when
brakes are suddenly applied.
When the brake pedal is depressed, this switch sends a signal to ECM. Then the ECM cancels operation
of the lock–up clutch while braking is in progress.
DTC No.
No stop light switch signal to ECM during driving.
P1520
(2 trip detection logic)
WIRING DIAGRAM
See page DI–170.
INSPECTION PROCEDURE
See page DI–170.
DIAGNOSTICS
Stop Light Switch Signal Malfunction
DTC Detecting Condition
– AUTOMATIC TRANSAXLE (A140E)
D Open or short in stop light switch circuit
D Stop light switch
D ECM
Author :
Trouble Area
Date :
DI–423
DI036–02
658