Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Repair procedures: Description
Accelerator Position Sensor (APS) is installed on the accelerator pedal module and detects the rotation angle of the accelerator pedal. The APS is one of the most important sensors in engine control system, so it consists of the two sensors which adapt individual sensor power and ground line. The second sensor monitors the first sensor and its output voltage is half of the first one. If the ratio of the sensor 1 and 2 is out of the range (approximately 1/2), the diagnostic system judges that a malfunction has occurred.
SPECIFICATION
| Pedal Position | Output Voltage (V) [Vref = 5.0V] | |
|---|---|---|
| APS1 | APS2 | |
| C.T | 0.7 ~ 0.8V | 0.29 ~ 0.46V |
| W.O.T | 3.85 ~ 4.35V | 1.93 ~ 2.18V |
| Item | Sensor Resistance |
|---|---|
| APS1 | 0.7 ~ 1.3kΩ at 20°C (68°F) |
| APS2 | 1.4 ~ 2.6kΩ at 20°C (68°F) |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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