Hyundai Sonata: Seat Heater. Repair procedures

Inspection

First Seat Heater

Check for continuity and measure the resistance between terminals.

[Cushion]

[Back]

Standard value (Fabric / Leather)

Cushion : 4.77 Ω ± 10%

Back 4.30 Ω ± 10% / 4.13 Ω ± 10%

Set : 9.07 Ω ± 10% / 8.9 Ω ± 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 : 40 ± 2°C (104 ± 35.6°F)

Back : 46 ± 2°C (114.8 ± 35.6°F)

3.	Check for continuity between the terminals after disconnecting the connector.

2nd Seat Heater

Check for continuity and measure the resistance between No.1 and NO.3 terminals.

Standard value (Bench / Split)

Cushion : 1.53 Ω ± 10% / 4.05 Ω ± 10%

Back : 1.35 Ω ± 10%

Set : 2.88 Ω ± 10%

Operate the seat warmer after connecting the 3P connector, and then check the thermostat by measuring the temperature of seat surface.

Standard value (Bench / Split)

Cushion : 40º ± 2°C / 40º ± 2°C (104 ± 35.6°F)

Back : 46º ± 2°C (114.8 ± 35.6°F)

Circuit Diagram ...

...