Kia Optima: ETC (Electronic Throttle Control) System Description and Operation - Engine Control System - Engine Control/Fuel SystemKia Optima: 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.

Schematic Diagram


Engine Control Module (ECM) Repair procedures
Removal 1. Shut off the High Voltage circuit. (Refer to “High Voltage Shut-off Procedures”) 2. Turn the ignition switch OFF and disconnect the auxiliary 12V negative (-) battery terminal ...

ETC (Electronic Throttle Control) System Troubleshooting
Fail-Safe Mode ItemFail-SafeETC MotorThrottle valve stuck at 5°TPSTPS 1 faultReplace it with TPS 2TPS 2 faultReplace it with TPS 1TPS 1,2 faultThrottle valve stuck at 5°APSAPS 1 faultReplace it ...

See also:

Engine Exhaust Gas Precautions
WARNING Engine exhaust gases contain carbon monoxide (CO). Though colorless and odorless, it is dangerous and could be lethal if inhaled. Follow the instructions below to avoid CO poisoning. ...

Low Fuel Level warning
This warning light indicates the fuel tank is near empty. The warning light will come on when the fuel level has dropped to about 2.2 US gal. (8.5 liters). Refuel as soon as possible. ...

Turn signals and lane change signals
The ignition switch must be on for the turn signals to function. To turn on the turn signals, move the lever up or down (A). The green arrow indicators on the instrument panel indicate which tur ...

Copyright www.kiopman.com 2020