Ventilated Seat Repair Procedures

Removal

[Fan]

1. 1
   Disconnect the negative (-) battery terminal.
2. 2
   Remove the front seat. (Refer to Body - "Front Seat Assembly")
3. 3
   Remove the air duct (A).

   

4. 4
   Remove the seat blower FAN (A) after removing the screws.

   

5. 5
   Disconnect the negative (-) battery terminal.
6. 6
   Remove the front seat. (Refer to Body - "Front Seat Assembly")
7. 7
   Remove the ventilated seat unit (A) after disconnecting the connectors (B).

   

[Ventilated Seat]

Installation

[Fan]

1. 1
   Install the blower fan.
2. 2
   Install the air duct.
3. 3
   Install the front seat assembly.
4. 4
   Connect the negative (-) battery terminal.
5. 5
   Install the ventilated seat unit.
6. 6
   Install the front seat assembly.
7. 7
   Connect the negative (-) battery terminal.

[Ventilated Seat]

Inspection

The ventilated seat consists of three units: the ventilated seat control unit, the input switch, and the output blower. Diagnostic Mode

1. 1
   You can enter diagnostic mode by turning the seat heater button on.
2. 2
   You can enter diagnostic mode by referring to the following description.
3. 3
   Press the heating wire switch as shown below.

   1. Press and hold the seat heater wire switch for 3 seconds or more.
   2. Release the switch for 3 seconds or less, then press and hold again for 1.5 - 3 seconds.
   3. Release the switch for 3 seconds or less, then press and hold again for 3 seconds or more.

   

4. 4
   When the vehicle enters diagnostic mode, the three LEDs (Low, Mid, High) in the seat heater wire area flash once for 0.5 seconds.

   1. When the vehicle enters self-diagnosis mode, only the LEDs operate in the same way as the seat heater switches.
   2. When two or more faults are detected, the LEDs flash sequentially at 2-second intervals for each trouble code.

   

5. 5
   After entering diagnostic mode, check the LED status to identify the fault.

   

   Failure Indicator	LED (Blinking)	Check Items	Detailed Checks
   		Low Voltage Detection	Low voltage outside the operating voltage range was supplied.
   		Overvoltage Detection	Overvoltage outside the operating voltage range was supplied.
   		Fuse (Short)	B+ Fuse Open
   			IGN2 Fuse Open
   		NTC/HEATING MAT (Short)	NTC Element Failure Heating Mat Open Heater Wire+ Open Heater System NTC Open (4.9 V or higher)
   		NTC/HEATING MAT (Disconnected)	Short circuit between the controller connector terminal and NTC Short circuit between the controller connector terminal and heater Short in heater system NTC wiring Short in heater system heating wire+ wiring
   		Target temperature not reached	Target temperature not reached within 40 minutes
   		Short in ventilation fan power supply line	Ventilation fan power supply line short (to ground)
   		Fan power supply open	Open or disconnected ventilation power supply line connector
   		Short in ventilation fan speed signal	Ventilation fan speed signal short (to ground)
   		Open or no connector ventilation fan speed signal	Open or no connector ventilation fan speed signal (VCC)
   		Open or no connector ventilation fan speed signal	Open or no connector ventilation fan speed signal (ground)
   		Ventilation fan speed signal short (to ground)	Ventilation fan speed signal short (to ground)
   		Open or no connector fan RPM signal	Open or no connector fan RPM signal (ground)
   		Open or no connector fan RPM signal	Open or no connector fan RPM signal (ground)

6. 6
   You can check for a failure by observing the LED blinking pattern.
7. 7
   Fault data is recorded in the memory of the ventilated seat unit.
8. 8
   Press and hold the passenger seat heater wire switch for 5 seconds or more until the LED flashes four times and the fault data in memory is cleared.
9. 9
   Pressing the IGN OFF button ends the diagnostic mode for the seat heater.
10. 10
    The seat heater system can be checked after turning the ignition on. To check the trouble code, refer to Procedure 2 above.