Kia Forte BD Quiz
Body Electrical System

Ventilated Seat

In this manual: Body Electrical System
General Information — 8Maintenance — 32Engine Mechanical System — 47Engine Electrical System — 17Emission Control System — 10Engine Control System/Fuel System — 32Clutch System — 11Manual Transmission — 11DCT (Dual Clutch Transmission) System — 16Drive Shaft and Axle — 8Suspension System — 26Steering — 9Restraints — 11Brake System — 27Body (Interior and Exterior) — 119Body Electrical System — 98Heating, Ventilation, and Air Conditioning — 27
12steps
~72min
3/5difficulty
Done 0 of 12

Components and Component Location

Components

1. Fan 2. Ventilated Seat (Passenger Seat Only)

Circuit Diagrams

Connector and Terminal Function

No. Connector A Connector B Connector C
1 Driver's Seat Ventilation Switch NTC (-) Driver's Seat Cushion Heater Output
2 Passenger's Seat Ventilation Switch Right Seat Heater Indicator (High) Driver's Seat Back Heater Output
3 Passenger's Seat Ventilation Indicator (High) Left Seat Heater Indicator (Low) Passenger's Seat Cushion Heater Output
4 Driver's Seat Ventilation Indicator (Low) Right Seat Heater Switch Passenger's Seat Back Heater Output
5 Passenger's Seat Fan Speed Right Seat Heater Indicator (Low) Driver's Seat Fan Output
6 Driver's Seat Fan Speed Right Seat Heater Indicator (Medium) Passenger's Seat Fan Output
7 Driver's Seat Ventilation Indicator (Medium) - Battery (+)
8 Driver's Seat Ventilation Indicator (High) Illumination (-) Driver's Seat Heater Ground
9 Latch Ground
10 Ventilation/Heater Unit_IGN 1 Passenger's Seat Heater Ground
11 -
12 Driver's Seat Heater Indicator (Medium)
13 Driver's Seat Heater Indicator (High)
14 Driver's Seat Heater Switch
15 Passenger's Seat Ventilation Indicator (Low)
16 Passenger's Seat Ventilation Indicator (Medium)
17 -
18 Right Seat NTC (+)
19 Driver's Seat NTC (+)
20 Ventilation/Heater Unit_IGN 2

Wiring Diagram

Repair Procedures

Inspection

The ventilated seat consists of three components: the ventilated seat control unit, the input switch, and the output fan.

  1. You can enter diagnostic mode by pressing the seat heater button.

  2. You can enter diagnostic mode by referring to the following description.

  3. Press the heating wire switch as shown below.

    1. Press and hold the heating wire switch for at least 3 seconds.

    2. Release the switch for 3 seconds or less, then press and hold it again for 1.5 - 3 seconds.

    3. Release the switch for 3 seconds or less, then press and hold it again for 3 seconds or more.

  4. After entering diagnostic mode, check the LED status to identify the fault.

    [Heater]

    Failure Indicator Failure Items Failure Details
    Low: Flashing
    Medium: Flashing
    High: ON    		 Low Voltage Detection - IGN 1 Power 8.5 V or less
    Overvoltage Detection - IGN 1 Power 16.5 V or more
    Low: OFF
    Medium: Flashing
    High: ON    		 Fuse (Short) - IGN2 fuse open
    Low: OFF
    Medium: ON
    High: Flashing    		 NTC/HEATING MAT (Disconnected) - NTC element failure
    - Cushion/rear heating mat disconnected
    - NTC (+) wiring disconnected
    - NTC (-) wiring disconnected
    - Heater (+) wiring open
    - Heater (-) wiring open
    Low: Flashing
    Medium: ON
    High: OFF    		 NTC/HEATING MAT (Short) - Short circuit between controller connector terminal and heater
    - Short circuit in heater system NTC (+) wiring
    - Short circuit in heater system NTC (-) wiring
    - Short circuit in heater system heater (+) wiring
    - Short circuit in heater system heater (-) wiring
    Low: Flashing
    Medium: ON
    High: Flashing    		 Target temperature not reached - Target temperature not reached within 40 minutes

    [Ventilation System]

    Failure Indicator Failure Items Failure Details
    Low: ON
    Medium: Flashing
    High: ON    		 Short in ventilation fan power supply line - Short circuit of ventilation fan power/ground line
    - Short circuit of ventilation fan power line to B(+)
    Low: ON
    Medium: OFF
    High: Flashing    		 Ventilation fan power open
    Ventilation fan speed signal open    		 - Ventilation fan power open
    - Ventilation fan ground (GND) open
    - Ventilation fan speed signal open
    Low: Flashing
    Medium: Flashing
    High: OFF    		 Short in ventilation fan speed signal - Short circuit of ventilation fan speed signal line to power
    - Short circuit of ventilation fan speed signal to GND
    - Short circuit of ventilation fan speed signal to fan speed signal
    Low: OFF
    Medium: Flashing
    High: Flashing    		 Open or disconnected ventilation fan speed signal connector - Ventilation fan speed signal connector disconnected or missing
    Low: Flashing
    Medium: OFF
    High: Flashing    		 Ventilation fan speed signal short circuit - Short circuit of fan speed signal line to power
    - Short circuit of ventilation fan speed signal to GND

  5. You can check for a failure by observing the LED blinking pattern.

  6. Malfunction data is stored in the memory of the ventilated seat unit.

  7. Press and hold the passenger seat heater switch for at least 5 seconds. The LED will flash four times and the malfunction data in memory will be erased.

  8. Turning the ignition OFF will end the seat heater diagnostic mode.

  9. You can check whether the seat heater system operates correctly by turning the ignition ON. To check the trouble code, refer to procedure 2 above.

Removal

Ventilated Seat

  1. Remove the heater unit.

    (Refer to Seat Electrical - "Seat Heater Unit")

Seat Ventilation

  1. Disconnect the negative (-) battery terminal.

  2. Remove the driver/passenger seat assembly.

    (Refer to Body - "Front Seat Assembly")

  3. Remove the fan (C) by loosening the screws and clips (B) after disconnecting the connector (A).

Installation

  1. Install in the reverse order of removal.

Test yourself

A quick Kia Forte BD quiz: every answer comes with an explanation and a link to the manual page.