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Engine Control System/Fuel System

ETC System (Electronic Throttle Control)

In this manual: Engine Control System/Fuel System
General Information — 8Maintenance — 31Engine Mechanical — 49Engine Electrical — 15Emission control system — 11Engine Control System/Fuel System — 45Clutch System — 12Manual Transaxle System — 11DCT (Dual Clutch Transmission) System — 16Drive Shafts and Axles — 9Suspension — 16Steering — 10restraint system — 15Braking system — 22Body (Interior and Exterior) — 89Rear Seat — 16Electrical System — 25Electrochromic Interior Rear View Mirror — 64Heating, Ventilation, and Air Conditioning — 31
19steps
~114min
4/5difficulty
0102030405011.89N·mlb·ft
Tightening torque found on this page
Done 0 of 19

Specifications

SPECIFICATIONS

sensor

Position Opening Percentage (%) Output Voltage (V) [Vref = 5 V]
TP1 Idle 8,5~11,5 0,43~0,58
THW 88~96 4,40~4,80
TP2 Idle 88,5~91,5 4,43~4,58
THW 2~10 0,10~0,50
Limp Home Control Throttle Stuck at 5°
Supply Voltage (V) 4,8 - 5,2
Type Non-Contact Hall IC Sensor [built into ETC module]

ENGINE

Position SPECIFICATIONS
Coil Resistance (Ω) 0,3 ~ 100 [20 °C]
Maximum Allowable Current (A) < 10,0
Type DC Motor [Built into ETC Module]

Description and Operation

Description

Electronic Throttle Control (ETC) consists of a throttle body with a built-in control motor and a throttle position sensor (TPS). Instead of a conventional accelerator cable, the accelerator pedal sensor (APS) is used to detect the driver's input. The ECM uses the APS signal to calculate the desired throttle angle; the throttle position is then controlled by the ETC motor via the ECM. The TPS signal is used to send throttle position information to the ECM. Electronic throttle control provides precise control of throttle position; external cruise control modules and cables are not required.

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

CIRCUIT DIAGRAM

Schematic diagrams

Circuit diagram

repair procedures

TEST

THROTTLE POSITION SENSOR (TPS)

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

  2. Start the engine and measure the output voltage of APS 1 and 2 at idle and at full throttle opening.

    Position Opening Percentage (%) Output Voltage (V) [Vref = 5 V]
    TP1 Idle 8,5~11,5 0,43~0,58
    THW 88~96 4,40~4,80
    TP2 Idle 88,5~91,5 4,43~4,58
    THW 2~10 0,10~0,50

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]

expansion

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

  2. Remove the air filter.

    (Refer to Engine Mechanical - "Air Cleaner").

  3. Disconnect the air intake hose (A), vapor hose (B), and ETC module connector (C).

  4. Remove the mounting screws (A) of the ETC module.

    ETC module mounting bolt:

    9,8~11.8 N·m

  5. Disconnect the coolant hoses (B), then remove the ETC module (A).

CLEANING

  1. Remove the ETC module.

    (Refer to Engine Control - "ETC System")

  2. Hold the ETC module plate (A) open.

  3. Wipe dirt from the throttle body with a damp, soft cloth.

  4. After cleaning, reinstall the ETC module, then perform the ETC programming.

    (Refer to Engine Control - "ETC System" - Adjustment)

Installation

  1. Installation is the reverse of removal.

INSPECTION

ETC Module Programming Procedure

After replacing or reinstalling the ETC module, make sure reprogramming is performed.

  1. With the ignition on, wait 1 minute.

  2. After starting, let the engine idle for 15 minutes.

  3. Wait 1 minute with the ignition switched OFF.

  4. Restart the engine and check idle stability.

Troubleshooting

FAIL-SAFE MODE

Position Limp Home Control
ETC motor Throttle Stuck at 5°
TPS TPS 1 Fault ECM Checks TPS2
TPS 2 Fault ECM Checks TPS1
TPS 1.2 Fault Throttle Stuck at 5°
APS APS 1 Malfunction ECM Checks APS2
APS 2 Malfunction ECM Checks APS1
APS 1.2 Fault Idle

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