Circuit Operation
- The turn-signal light switch sends a signal through the column-ECU (incorporated in the column switch) to the ETACS-ECU. If the column-ECU sends a turn-signal light switch "ON" signal to the ETACS-ECU, the ETACS-ECU turns on the flasher timer (incorporated in the ETACS-ECU), thus causing the turn-signal lights to flash.
- The ETACS-ECU operates the turn-signal lights according to the following signals:
- Ignition switch (IG1): ON
- Turn-signal light switch: ON
- The ETACS-ECU flashes the turn-signal lights under the following conditions:
- Ignition key: "ON" position
- Turn-signal light switch: Left or right turn signal position