Hyundai Sonata: 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
When replacing the ECM, the vehicle equipped with the immobilizer
must be performed procedure as below.
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ETC (Electronic Throttle Control) System. Troubleshooting
Fail-Safe Mode
Item
Fail-Safe
ETC Motor
Throttle valve stuck at 5В°
TPS
TPS 1 fault
ECM looks at TPS2
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See also:
Electronic stability control (ESC)
The Electronic Stability control (ESC) system is designed to stabilize the vehicle
during cornering maneuvers. ESC checks where you are steering and where the vehicle
is actually going. ESC ap ...
Valve Body. Repair procedures
Removal
1.
Remove the battery and the battery tray. (Refer to
"Charging system" in EE group.)
2.
Remove the under cover (A).
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Trip Switch. Repair procedures
Inspection
1.
Check the audio remote control switch for resistance between No.3
and No.5 terminals in each switch position.
Switch
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