Kia Forte: ETC (Electronic Throttle Control) System 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.

ECM Problem Inspection Procedure

1. TEST ECM GROUND CIRCUIT: Measure resistance between ECM and chassis ground using the backside of ECM harness connector as ECM side check point. If the problem is fo ...

ETC (Electronic Throttle Control) System Schematic Diagram

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See also:

Shift Cable Removal
1. Remove the floor console assembly. (Refer to Body - "Floor Consol") 2. Remove the air duct. 3. ...

Piston and Connecting Rod Inspection
Connecting Rod 1. Check the connecting rod side clearance. Using a feeler gauge, measure the end play while moving the connecting rod back and forth. ...

Input Speed Sensor Signal Waveform
Fig 1) Input/Output speed sensor at low speed Fig 2) Input/Output speed sensor at high speed ...