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:
Engine And Transmission Assembly Repair procedures
Removal
1.
Remove the engine cover.
2.
Remove the battery and battery tray.
(Refer to Engine Electrical System - "Battery")
3.
Remove the air duct and air cleaner assembly.
(Refer to ...
Overhead Console Lamp Repair procedures
Inspection
1.
Remove the overhead console lamp assembly then check for
continuity between terminals. If the continuity is not as specified,
replace the map lamp switch.
Removal
1.
Disconn ...
ESP OFF Switch Description and Operation
Description
1.
The ESP OFF switch is for the user to turn off the ESP system.
2.
The ESP OFF lamp is on when ESP OFF switch is engaged. ...
