Kia Rio: Steering wheel / Heated Steering wheel

Kia Rio 2017-2021 YB Service Manual / Steering System / Steering wheel / Heated Steering wheel

Description and operation
Description

The heated steering wheel system improves the thermal comfort of the driver by heating the steering wheel when manually selected.

Specifications

Item
Specification
Voltage
13.5 V ± 0.1V, 80W±10%
Heated pad resistance
1.85 ± 0.2 Ω (at 22°C ±1°C)
NTC resistance
10.0 kΩ  ± 3% (at 23 - 27°C)

Schematic diagrams
System Circuit Diagram

Harness Connector

Terminal Function

Housing
Pin
Function
Wire color
Pad
A
GND
Black
B
HEATER
Yellow
C
NTC+
Black / Red
D
NTC¯
Black

Repair procedures
Inspection
1.

Measure a resistance of NTC and Heated pad.

NTC resistance (Black / Red, Black) : 10.0 kΩ  ± 3% (at 23 - 27°C)

Heated pad resistance (Yellow) : 1.85 ± 0.2 Ω (at 22°C ±1°C)

2.

Measure a temperature.

The temperature of wheel surface grip must rise from -20°C to 20°C within 6 minute

The temperature of wheel surface grip must keep 38°C after 25 minute

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