ATTE/A340 Automatic Trans (GTE) — Stop Light Switch Circuit, page 103

AT2–103

A340E (2JZ—GTE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING

Stop Light Switch Circuit

— 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 operated, this switch sends a signal to the ECM. Then the ECM cancels operation of the lock–up clutch while braking is in progress.

— WIRING DIAGRAM —

J/B No. 1
W-L    2    10
        1B        11
        15 A STOP

Stop Light Switch
W         G-W
2         1

G-W

1 (1H)

10 (1C)
J/B No.1

G-W  7
Light Failure Sensor

Stop Light

Power
120 A ALT

Battery

TRAC ECU
ABS ECU
Cruise Control ECU
Shift Lock Control ECU

G-W    11      G-W    4    STP
              J1          E10

ECM

C05429