Kia Optima Hybrid: Engine Control System / ETC (Electronic Throttle Control) System Description and Operation

Kia Optima Hybrid (TF HEV) 2016-2020 Service 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.

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. 3. Remove ...

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 with ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Troubleshooting

Troubleshooting SymptomProbable causeRemedyPlay in steeringLoose yoke plugRetightenLoose steering gear mounting boltsRetightenLoose or worn tie rod endRetighten or replace as necessarySteering wheel does not return properlyExcessive turning resistance of tie rod endReplaceYoke plug excessively tightAdjustTie ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Troubleshooting

Troubleshooting 1. The lamp switch inputs can be checked using the GDS. 2. To check the input value of lamp switch, select option "Body Control Module". 3. To consult the present input/output value of BCM, "Current DATA". It provides information of BCM input/output conditions of power supply, turn signal/brake ...