Kia Optima DL3: Seat Electrical / Lumbar Support System

Kia Optima DL3 2019-2026 Service and Repair Manual / Body Electrical System / Seat Electrical / Lumbar Support System

Repair procedures

Inspection
1.

Remove the front seat back.

(Refer to Body - "Front Seat Back Cover")

2.

Disconnect the connector (A).
3.

When the battery power is supplied to the motor connector, check the motor for smooth operation.
Removal
1.

Remove the front seat back.

(Refer to Body - "Front Seat Back Cover")

2.

Disconnect the connector (A) from lumbar support motor.
3.

Remove the side airbag.

(Refer to Restraint - "Side Airbag Module")

4.

Remove the lumbar support (A) after loosening the screws.
Installation
1.

Install in the reverse order of removal.

    Schematic diagrams Connector and Terminal Function Pin Function Connector A Connector B 1 Driver heater ground (-) Driver blower speed (+) 2 Passenger heater ground (-) - 3 Driver cushion heater power (+) CAN (Low) 4 Driver back heater power (+) CAN (High) 5 Passenger cushion heater power (+) - 6 Passenger back heater power (+) LIN 7 ECU (Ground) Detent 8 ECU (Ground) IGN1 9 Driver blower speed 10 Passenger blower speed 11 Illumination (-) 12 Driver NTC (-) 13 Passenger NTC (-) 14 - 15 - 16 - 17 - 18 - 19 - 20 IGN2 21 - 22 Driver NTC (+) 23 Passenger NTC (+) 24 - Repair procedures Removal Ventilation Seat Unit 1.

    Repair procedures Removal 1. Remove the front seat shield outer cover. (Refer to Body - "Front Seat Shield Outer Cover") 2.

    Other information:

    Kia Optima DL3 2019-2026 Service and Repair Manual: Rheostat

    Schematic diagrams Connector and Terminal Function Repair procedures Removal 1. Disconnect the negative battery terminal. 2. Remove the crash pad lower panel. (Refer to Body - "Crash Pad Lower Panel") 3.

    Kia Optima DL3 2019-2026 Service and Repair Manual: Blower Motor

    Repair procedures Inspection 1. Connect the battery voltage and check the blower motor rotation. 2. If the blower motor does not operate well, substitute with a known-good blower motor and check for proper operation.

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