Hyundai Tucson Quiz
Engine/Fuel Control System

ETC (Electronic Throttle Control) System

In this manual: Engine/Fuel Control System
General Information — 17Engine Mechanical System — 51Engine Electrical System — 26Emission Control System — 23Engine/Fuel Control System — 44Clutch System — 12MANUAL TRANSMISSION SYSTEM — 12AUTOMATIC TRANSMISSION SYSTEM — 42Four-Wheel Drive (4WD) System — 14Drive Shaft and Axle — 22Suspension System — 30Steering System — 16Restraint — 21Braking System — 47Body Work (Interior and Exterior) — 145Body Electrical System — 162Heating, Ventilation and Air Conditioning — 39
13steps
~78min
4/5difficulty
010203040509.87N·mlb·ft
Tightening torque found on this page
Done 0 of 13

Description and Operation

Description

The Electronic Throttle Control (ETC) system consists of a throttle body with a built-in drive motor and throttle position sensors (TPS). Instead of a conventional throttle cable, a position sensor is used. The Accelerator Pedal Position Sensor (APS) is used to receive data from the driver. The ECM uses the APS signal to calculate the target throttle angle. The throttle position is controlled by the ECM through the ETC motor. The TPS signal is used to provide feedback to the ECM regarding the throttle position. With ETC, precise throttle position control is possible and external speed control modules/cables are no longer required.
1. Dry Bearing
2. DC Motor
3. Non-Contact Hall Sensor
4. Sprocket		 5. Magnet
6. IC Lobby
7. Connector
8. Stator

Circuit Diagrams

SCHEMATIC DIAGRAM

Troubleshooting

Safety Protection

Item Fail-safe
ETC motor Throttle Stuck at 7°
Goods and Services Tax TPS 1 Fault ECM Considers TPS2
APS 2 Fault ECM Considers TPS1
TPS 1, 2 Fault Throttle Stuck at 7°
Fail-Safe: APS 1 Malfunction ECM Considers APS 2
APS 2 Malfunction ECM Considers APS 1
APS 1, 2 Fault Engine idle condition

Specifications

Specification

[Throttle Position Sensor (TPS)]
Throttle Angle (°) Output voltage (V)
GST1 GST2
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

[ENGINE, ETC.]
Item Specification
Coil Resistance ( ) 0,3 ~ 100 [20 °C]

Circuit Diagrams

Wiring Diagram

(B)

(MT)

Repair Procedures

Inspection

THROTTLE POSITION SENSOR (TPS)

  1. Connect the GDS to the Data Link Connector (DLC).
  2. Start the engine and measure the output voltages of TPS 1 and 2 at CLOSED THROTTLE and WIDE OPEN THROTTLE.

    Specification: Refer to "Specifications"

ETC motor

  1. Turn the ignition switch to the OFF position.
  2. Disconnect the ETC module connector.
  3. Measure the resistance between terminals 1 and 2 of the ETC module.
  4. Check that the resistance is within specification.

    Specification: Refer to "Specifications"

DEPOSIT

  1. Turn the ignition switch to the OFF position and disconnect the negative (-) battery cable.
  2. Remove the air intake hose and resonator 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 installation bolts (C), then remove the ETC module from the engine.

REMEDY

  1. To install, reverse the removal procedure. ETC body installation bolt: 7.8 ~ 9.8 N·m

ITEM

ETC Module Learning Procedure

When installing a new ETC module or reinstalling it, the ETC module learning procedure must be performed.
  1. Hold the ignition switch or start button in the IG ON position for 5 seconds.
  2. Turn the ignition switch to the OFF position, then start the engine.

Test yourself

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