Electronic Throttle Control Module: Description and Operation

ETS (ELECTRONIC THROTTLE SYSTEM)

ETS (Electronic Throttle System) consists of:

- In put signals from Accelerator Position Sensor (APS), Throttle Position Sensor (TPS), Ignition Switch and Serial Communication Line,
- ETS Motor and
- Limp - Home Valve




to control the idle speed, throttle valve and TCS by only one motor.

In ECU and ETS the signals from Accelerator Position Sensor (APS) and Throttle Position Sensor (TPS) are the most important.




They have two circuits in sensor module, one is flowed to ECU and the other is flowed to ETS. ECU calculates the throttle target value with the signals from APS #2 (MAIN) and TPS #2 (SUB) and the ETS control module controls the ETS motor with the signals from APS #1 (SUB) and TPS #1 (MAIN).