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Fuel System

Accelerator Position Sensor (APS) Description and Operation

In this manual: Fuel System
General Information — 15Maintenance — 7Engine Mechanical System — 84Engine Electrical System — 49Emission Control System — 22Fuel System — 95Clutch System — 28Manual Transmission — 21Dual Clutch Transmission (DCT) System — 47Drive Shaft and Axle — 20Suspension System — 36Steering — 23Restraints — 39Brake System — 54Body (Interior and Exterior) — 209Body Electrical System — 254Heating, Ventilation, and Air Conditioning — 56
~1min read

Description

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

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