Kia Picanto (JA): Engine Control System / Heated Oxygen Sensor (HO2S)

Kia Picanto (JA) 2017-2026 Service & Repair Manual / Engine Control / Fuel System / Engine Control System / Heated Oxygen Sensor (HO2S)

Specifications

Specification

HO2S [Bank 1/Sensor 1]

Item	Specification
Heater Resistance (Ω)	2.5 - 4.0 [20°C(68°F)]
Type	Linear
Pin	6

HO2S [Bank 1/Sensor 2]

Item	Specification
Heater Resistance (Ω)	Approximately 9.0 [20°C(68°F)]
Type	Binary
Pin	4

Description and operation

Description

Installed in both upstream and downstream of the Manifold Catalytic Converter, the Heated Oxygen Sensor (HO2S) consists of zirconium and alumina. The sensor output voltage varies in accordance with the air fuel ratio.

The sensor must be heated in order to operate properly. To keep it heated, it is equipped with a heater controlled by the ECM via a duty cycle signal. When the exhaust gas temperature is lower than the specified value, the heater will warm up the sensor tip.

Schematic diagrams

Circuit Diagram

[A/T]

[M/T]

Repair procedures

Inspection

1.	Turn the ignition switch OFF.

2.	Disconnect the HO2S connector.

Measure resistance between the HO2S terminals 2 and 5 [B1/S1].

Specification : 2.4-4.0 [20°C(68°F)]

Measure resistance between the HO2S terminals 3 and 4 [B1/S2].

Specification : Approximately 9.0 [20°C(68°F)]

5.	Check that the resistance is within the specification.

Removal

Note that the SST 09392-1Y100 can be used for removing the heated oxygen sensor.

[Bank 1 / Sensor 1]

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

2.	Disconnect the connector (A).

Remove the heated oxygen sensor (B).

Heated oxygen sensor:

39.2 - 49.1 N·m (4.0 - 5.0 kgf·m, 28.9 - 36.2 lb·ft)

[Bank 1 / Sensor 2]

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

2.	Disconnect the connector (A).

Remove the heated oxygen sensor (A).

Heated oxygen sensor:

39.2 - 49.1 N·m (4.0 - 5.0 kgf·m, 28.9 - 36.2 lb·ft)

Installation

•	Install the component to the specified torques.

•	Note that internal damage may occur when the component is dropped. If the component has been dropped, inspect before installing.

•	DO NOT use a cleaner, spray, or grease to sensing element and connector of the sensor as oil substance may degrade the sensor performance.

•	Sensor and its wiring may get damaged by contacting with the exhaust system (Exhaust Manifold, Catalytic Converter, etc.).

1.	Install in the reverse order of removal.

❮Knock Sensor (KS)

Specifications Specification Item Specification Resistance(MΩ) 4.87 Capacitance (pF) 850 - 1150 Type Piezo-electricity Pin 2 Description and operation Description Knocking is a phenomenon characterized by undesirable vibration and noise that can cause engine damage.

Exhaust Gas Temperature Sensor (EGTS)❯

Specifications Specification Exhaust Gas Temperature Sensor (EGTS) #1, 2 ▷ Type : Thermistor type Temperature [°C (°F)] Resistance (kΩ) -40 (-40) 0.

Other information:

Kia Picanto (JA) 2017-2026 Service & Repair Manual: Smart Key System

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Kia Picanto (JA) 2017-2026 Service & Repair Manual: Heater & A/C Control Unit(Manual)

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