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 5°
TPS
TPS 1 fault
ECM looks at TPS2
...
See also:
Battery replacement
The transmitter uses a 3 volt lithium battery which will normally last for several
years. When replacement is necessary, use the following procedure.
1. Insert a slim tool into the slot and gen ...
Towing
If the vehicle needs to be towed, call a professional towing
service. Never tow vehicle with just a rope or chain. It is very dangerous.
Emergency Towing
There are three popular method ...
Front Bumper. Repair procedures
Replacement
•
Put on gloves to protect your hands.
•
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