Hyundai Santa Fe (TM): ETC (Electronic Throttle Control) System / Description and operation

Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual / Engine Control/Fuel System / Engine Control System / ETC (Electronic Throttle Control) System / Description and operation

Description
The Electronic Throttle Control (ETC) System consists of a throttle body with an integrated control motor and throttle position sensor (TPS). Instead of the traditional throttle cable, an Accelerator Position Sensor (APS) is used to receive driver input. The ECM uses the APS signal to calculate the target throttle angle; the position of the throttle is then adjusted via ECM control of the ETC motor. The TPS signal is used to provide feedback regarding throttle position to the ECM. Using ETC, precise control over throttle position is possible; the need for external cruise control modules/cables is eliminated.

    Fail-Safe Mode Item Fail-Safe ETC Motor Throttle valve stuck at 5° TPS TPS 1 fault Replace it with TPS2 TPS 2 fault Replace it with TPS1 TPS 1, 2 fault Throttle valve stuck at 5° APS TPS 1 fault Replace it with TPS2 TPS 2 fault Replace it with TPS1 TPS 1, 2 fault Throttle valve stuck at 5°    • When throttle value is stuck at 5°, engine speed is limited at below 1,500rpm and vehicle speed at maximum 40 - 50 km/h (25 - 31 mph).

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