Kia Optima Hybrid: Engine Control System / ETC (Electronic Throttle Control) System Repair procedures

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual / Engine Control/Fuel System / Engine Control System / ETC (Electronic Throttle Control) System Repair procedures

Inspection

Throttle Position Sensor (TPS)

1.	Connect the GDS on the Data Link Connector (DLC).

Start the engine and measure the output voltage of TPS 1 and 2 at C.T. and W.O.T.

Throttle Angle	Output Voltage (V)
Throttle Angle	TPS 1	TPS 2
C.T	0.3 ~ 0.9	4.2 ~ 5.0
W.O.T	1.5 ~ 3.0	3.3 ~ 3.8

3.	Turn the ignition switch OFF and disconnect the scantool from the DLC.

Disconnect the ETC module connector and measure the resistance between the ETC module terminals 1 and 2.

Specification: Refer to “Specification”

ETC Motor

1.	Turn the ignition switch OFF.

2.	Disconnect the ETC module connector.

3.	Measure resistance between the ETC module terminals 3 and 6.

Check that the resistance is within the specification.

Specification: 1.2 ~ 1.8? [20°C(68°F)]

Removal

1.	Turn the ignition switch OFF and disconnect the battery negative (-) terminal.

2.	Remove the resonator and the air intake hose (Refer to “Intake And Exhaust System” in EM group).

3.	Disconnect the ETC module connector (A).

4.	Disconnect the coolant hoses (B).

5.	Remove the mounting bolts (C), and then remove the ETC module from the engine.

Installation

•	Install the component with the specified torques.

•	Note that internal damage may occur when the component is dropped. In this case, use it after inspecting.

Install in the reverse order of removal.

Electronic throttle body mounting bolt:

7.8 ~ 11.8 N.m (0.8 ~ 1.2 kgf.m, 5.8 ~ 8.7 lb-ft)

ETC (Electronic Throttle Control) System Schematic Diagrams

Circuit Diagram ...

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