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.
...
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
...
See also:
Power Seat Control Switch. Repair procedures
Inspection
With the power seat switch in each position, make sure that continuity
exists between the terminals below. If continuity is not as specified, replace
the power seat switch.
A ...
Resetting the sunroof
Whenever the vehicle battery is disconnected or discharged, or related fuse is
blown, you must reset your sunroof system as follows:
1. Turn the ignition switch to the ON position and close the sun ...
Cowl Top Cover. Repair procedures
Replacement
1.
Remove the covers and remove the nuts, then remove the wiper arm
(A).
2.
Detach the clips, then remove the cowl top ...