Kia Picanto: Engine Control System / Accelerator Position Sensor (APS)

Kia Picanto JA 2017-2025 Service & Repair Manual / Engine Control / Fuel System / Engine Control System / Accelerator Position Sensor (APS)

Specifications

Specification

Accelerator Position	Output Voltage (V) [Vref = 5V]
Accelerator Position	APS1	APS2
C.T	0.7 - 0.8	0.32 - 0.42
W.O.T	3.98 - 4.22	1.93 - 2.17

Description and operation

Description

Installed on the accelerator pedal module, the Accelerator Position Sensor (APS) detects the rotation angle of the accelerator pedal. As the APS is one of the most important sensors in engine control system, it consists of two sensors each with separate 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 it is abnormal.

Schematic diagrams

Circuit Diagram

[A/T]

[M/T]

Repair procedures

Inspection

1.	Connect the KDS on the Data Link Connector (DLC).

2.	Turn the ignition switch ON.

Measure the output voltage of the APS 1 and 2 at C.T and W.O.T.

Accelerator Position	Output Voltage (V) [Vref = 5V]
Accelerator Position	APS1	APS2
C.T	0.7 - 0.8	0.32 - 0.42
W.O.T	3.98 - 4.22	1.93 - 2.17

Removal

1.	Turn the ignition switch OFF and disconnect the battery negative (-) terminal.

2.	Disconnect the accelerator position sensor connector (A).

Remove the installation nuts (B), and then remove the accelerator pedal module.

Accelerator pedal module mounting nut:

12.7 - 15.7 N·m (1.3 - 1.6 kgf·m, 9.4 - 11.6 lb·ft)

Accelerator pedal module mounting bolt:

8.8 - 13.7 N·m (0.9 - 1.4 kgf·m, 6.5 - 10.1 lb·ft)

Installation

1.	Install in the reverse order of removal.

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