Hyundai Sonata LF Quiz
Engine Control System/Fuel System

Accelerator Position Sensor (APS) Description and Operation

In this manual: Engine Control System/Fuel System
General Information — 9Engine Mechanical System — 90Engine Electrical System — 58Emission Control System — 24Engine Control System/Fuel System — 114Drive Shaft and Axle — 15Suspension System — 35Steering — 19Restraints — 50Brake System — 54Body (Interior and Exterior) — 213Body Electrical System — 241Heating, Ventilation, and Air Conditioning — 56DCT (Dual Clutch Transmission) System — 52
~1min read

Description

The Accelerator Position Sensor (APS) is installed on the accelerator pedal module and detects the accelerator pedal angle. The APS is one of the most important sensors in the engine control system, so it consists of two sensors with individual sensor power and ground lines. The second sensor monitors the first sensor and its output voltage is half of the first. If the ratio between sensors 1 and 2 is outside the allowable limits (approximately 1/2), the diagnostic system determines that it is abnormal.

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