Kia Optima Hybrid: Seat Electrical / Seat Heater (Non-Air Ventilation) Repair procedures

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual / Body Electrical System / Seat Electrical / Seat Heater (Non-Air Ventilation) Repair procedures

Inspection
First Seat Heater
1.
Check for continuity and measure the resistance between No.4 and No.6 terminals.
[Cushion]

No.
Description
No.
Description
1
Heater (-)
3
NTC (+)
2
NTC (-)
4
Heater (+)

[Back]

2.
Measure the resistance between No.1 and No. 4 in the A connector to check the cushion and back heater.

Standard value
Set (Cushion+Back) : 2.65? ± 10%

3.
Measure the resistance between No.4 in the A and No. 1 in the B connector to check the cushion heater.

Standard value
Cushion : 1.3? ± 10%

4.
Measure the resistance between No.1 and No. 2 in the C connector to check the back heater.

Standard value
Back : 1.35? ± 10%

5.
Operate the seat heater after connecting the connector, and then check the thermostat by measuring the temperature of seat surface.

Standard value (Fabric / Leather)
Cushion :
1 Step : 40 ± 2°C(104 ± 3.6°F)
2 Step : 42 ± 2°C(107.6 ± 3.6°F)
Back :
1 Step : 46 ± 2°C(114.8 ± 3.6°F)
2 Step : 52 ± 2°C(125.6 ± 3.6°F)

Rear Seat Heater
1.
Check for continuity and measure the resistance between terminals as below.

? Refer to the "Circuit Diagram" to check the connector B and C.
2.
Measure the resistance between No.1 and No. 2 in the A connector to check the cushion and back heater.

Standard value
Set (Cushion+Back) - Bench type : 2.90? ± 10%
Cushion - Split type : 8.0? ± 10%

3.
Measure the resistance between No.3 in the A and No. 1 in the B connector to check the cushion heater.

Standard value
Cushion - Bench type : 2.2? ± 10%

4.
Measure the resistance between No.1 and No. 2 in the C connector to check the back heater.

Standard value
Back - Bench type : 1.7? ± 10%

5.
Operate seat warmer after connecting the 4P connector, and then check the thermostat by measuring the temperature of seat surface.

Standard value (Fabric / Leather)
Cushion :
1 Step : 40 ± 2°C(104 ± 3.6°F)
2 Step : 42 ± 2°C(107.6 ± 3.6°F)
Back :
1 Step : 46 ± 2°C(114.8 ± 3.6°F)
2 Step : 52 ± 2°C(125.6 ± 3.6°F)

Seat Heater (Non-Air Ventilation) Schematic Diagrams

Circuit Diagram ...

Air Ventilation Seat Components and Components Location

Components (1) 1. Ventilation blower2. Ventilation ECU3. Ventilation seat switch Components (2) Components (3) ...

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