Kia Rio YB Quiz
Engine Control System/Fuel System

ETC (Electronic Throttle Control) System

In this manual: Engine Control System/Fuel System
General Information — 8Maintenance — 31Engine Mechanical System — 44Engine Electrical System — 14Emission Control System — 9Engine Control System/Fuel System — 30Clutch System — 10Manual Transmission — 10Automatic Transmission — 23Drive Shaft and Axle — 8Suspension System — 15Steering — 9Restraints — 14Brake System — 22Body (Interior and Exterior) — 115Body Electrical System — 84Heating, Ventilation, and Air Conditioning — 28
15steps
~90min
4/5difficulty
010203040509.87N·mlb·ft
Tightening torque found on this page
Done 0 of 15

Specifications

Specification

ETC Module

Throttle Position Sensor (TPS) [Built into ETC Module]

▷ Type: Non-contact Hall IC sensor

▷ Specifications

Throttle Angle (°) Output Voltage (V) [Vref=5V]
TP1 TP2
0 0,5 4,5
10 0,96 4.05
20 1,41 3,59
30 1,87 3.14
40 2,32 2,68
50 2,78 2,23
60 3,23 1,77
70 3,69 1,32
80 4.14 0,86
90 4.6 0,41
98 4,65 0,35
THA (0) 0,5 4,5
THW (86) 4.41 0,59

DC Motor [Built into ETC Module]

Item Specification
Coil Resistance (Ω) 0,3–100 [20 °C]

Description and Operation

Description

The Electronic Throttle Control (ETC) system consists of a throttle body with a built-in control motor and a Throttle Position Sensor (TPS). Instead of a conventional throttle cable, the Accelerator Position Sensor (APS) is used to receive driver input. The ECM uses the APS signal to calculate the target throttle angle; the throttle position is then regulated by the ECM through ETC motor control. The TPS signal is used to send throttle position information to the ECM. Using ETC, precise throttle position control is possible; the need for external cruise control modules/cables is eliminated.

1. Dry Bearing
2. DC Motor
3. Non-contact Hall Sensor
4. Gear		 5. Magnet
6. Hall IC
7. Clamp
8. Stator

Schematic Diagram

Circuit Diagrams

Wiring Diagram

Repair Procedures

Inspection

Throttle Position Sensor (TPS)

  1. Connect KDS/GDS to the Data Link Connector (DLC).

  2. Start the engine and measure the output voltage of TPS 1 and 2 at TP and VOT.

    [Throttle Position Sensor (TPS)]

    Throttle Angle (°) Output Voltage (V) [Vref=5V]
    TP1 TP2
    0 0,5 4,5
    10 0,96 4.05
    20 1,41 3,59
    30 1,87 3.14
    40 2,32 2,68
    50 2,78 2,23
    60 3,23 1,77
    70 3,69 1,32
    80 4.14 0,86
    90 4.6 0,41
    98 4,65 0,35
    THA (0) 0,5 4,5
    THW (86) 4.41 0,59

ETC Motor

  1. Turn the ignition off.

  2. Disconnect the ETC module connector.

  3. Measure the resistance between terminals 1 and 2 of the ETC module.

  4. Make sure the resistance is within specification.

    Specification: 0.3–100 Ω [20 °C]

Removal

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

  2. Remove the air cleaner assembly.

    (See Intake and Exhaust System - Air Cleaner)

  3. Disconnect the ETC module connector (A).

  4. Disconnect the evaporative hose (B).

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

    ETC Throttle Body Mounting Bolt:

    7,8–9.8 N·m

Installation

  1. Installation is the reverse of removal.

Adjustment

ETC Module Learning Procedure

When replacing or reinstalling, be sure to perform the ETC module learning procedure.

  1. Wait 1 minute with the ignition switched ON.

  2. Start the engine and let it idle for 15 minutes.

  3. Wait for 1 minute with the ignition switched off.

  4. Restart the engine and check that the idle speed is stable.

Troubleshooting

Fail-Safe Mode

Item Fail-safe
ETC Motor Throttle Valve Stuck at 5°
TPS TPS 1 Fault ECM Reads TPS2
APS 2 Fault ECM Reads TPS1
TPS 1,2 Malfunction Throttle Valve Stuck at 5°
APS APS 1 Malfunction ECM Reads APS 2
APS 2 Malfunction ECM Reads APS 1
APS 1,2 Malfunction Throttle Valve Stuck at 5°

Test yourself

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