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

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]

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%

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%

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

Standard value

Back : 1.35? ± 10%

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.

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%

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%

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%

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 ...

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