This sensor is mounted on the throttle body and electronically senses how far the throttle is open and then sends this data to the ECU. The throttle position sensor takes the place of throttle pressure in a fully hydraulic control transmission. By relaying the throttle position, it gives the ECU an indication of engine load to control the shifting and lock-up timing of the transmission.
There are two types of throttle sensors associated with ECT transmissions. The type is related to how they connect to the ECT ECU. The first is the indirect type because it is connected directly to the engine ECU, and the engine ECU then relays throttle position information to the ECT ECU. The second type is the direct type which is connected directly to the ECT ECU.
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