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

Kia Rio 2017-2023 YB Service 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

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 it is abnormal.

Schematic diagrams

Circuit Diagram

Repair procedures

Inspection

1.	Connect the KDS/GDS on the Diagnosis Link Connector (DLC).

Start engine and check output voltages of 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)

Installation

1.	Install in the reverse order of removal.

❮Heated Oxygen Sensor (HO2S)

Specifications Specification Heated Oxygen Sensor (HO2S) HO2S [Bank 1/Sensor 1] Item Specification Heater Resistance (Ω) Approximately 9.

Injector❯

Specifications Specification Injector Item Specification Coil Resistance (Ω) Approximately 9.

Other information:

Kia Rio 2017-2023 YB Service Manual: Horn

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Kia Rio 2017-2023 YB Service Manual: Compressor Oil

Repair procedures Oil Specification 1. The HFC-134a system requires synthetic compressor oil (PAG) whereas the R-12 system requires mineral compressor oil. The two oils must never be mixed. 2. Compressor oil (PAG) varies according to compressor model.