ES 300 V6-3.0L (1MZ-FE) (1997)
When the ignition SW is turned ON and the brake pedal is pressed (stop light SW ON), if the stop light circuit is open, the current flowing from
TERMINAL 7 of the light failure sensor to TERMINALS 1, 2 changes. So the light failure sensor detects the disconnection and the warning
circuit of the light failure sensor is activated. As a result, the current flows from TERMINAL 4 of the light failure sensor --> TERMINAL 11 -->
GROUND and turns the rear lights warning light ON. By pressing the brake pedal, the current flowing to TERMINAL 8 of the light failure
sensor keeps the warning circuit ON and the warning light ON until the ignition SW is turned OFF.