Components and components location

Component Location

1. Lumber support motor (Vertical) 2. Lumbar support motor (Horizontal) 3. Reclining motor 4. Rear height motor 5. Front height motor

6. Slide motor 7. Power seat switch 8. Reclining switch 9. Lumbar support switch

Inspection

Inspection

1.	Basic inspection is performed as follows. (1) Check indicator after entering self - diagnosis mod. (2) Check battery terminals and state of charge. (3) Check fuses and relays. (4) Make sure that the connectors are connected securely. (5) Check the connectors and wiring for damage.

1.

The body electrical system can be more quickly diagnosed for problems by using the diagnostic tool (Refer to "DTC guide"). - Diagnosis contents may be different for each vehicle type. (1) Self diagnosis : Inspection and display failed code (DTC) (2) Sensor data : Checks the system input/output values (3) Forced operation : Checking the system operation condition (4) Additional function : Controlling other features including system option setting and zero point adjustment • Disconnected : Open Load display • Short : Short display • Normal : None display

1.	Self-diagnosis mode is entered through the operation of the seat heater switch.

2.

Enter the self-diagnostic mode by referring to the description below. (1) IGN1 ON (2) Press and hold the seat heater switch for more than 3 seconds. (3) Release the hand and press the switch again within 3 seconds for 1.5 to 3 seconds. (4) Again within 3 seconds, hold the switch for more than 3 seconds to enter the self-diagnosis mode. (5) When entering the self-diagnostic mode, the switch indicator blinks once. • Up to 2 fault codes can be output, and when 2 fault codes are detected, each fault code is sequentially repeated with a cycle of 2 seconds. • The fault details can be checked through the self-diagnosis mode in the same way for both the 1st and 2nd row seats. • The shape of the heater & air ventilated seat switch can be applied differently depending on the vehicle model and options. [3-level heater & air ventilated seat] [2-level heater & air ventilated seat]

3.

Check the details of the fault according to the blinking and lighting status of the indicator after entering the self-diagnosis mode. [Heater seat - when applying 3 level / 3 pin indicator output] Indicator Fail content Fail description Remarks Low Mid High ILLUMINATE ON OFF NTC / Heater Mat Disconnection detection Cushion / Back Heater Mat Disconnection - NTC(+) Wiring Disconnection - NTC(-) Wiring Disconnection - Heater(+) Wiring Disconnection - Heater(-) Wiring Disconnection - ILLUMINATE ON OFF NTC / Heater Mat Short Circuit detection NTC(+) / NTC(-) Short Circuit - OFF ON ILLUMINATE NTC(+) / Heater(+) Short Circuit - ILLUMINATE ON OFF NTC(+) / Heater(-) Short Circuit - Heater(+) / Heater(-) Short Circuit - Heater(+) / NTC(-) Short Circuit When NTC protection circuit is applied, Low : OFF / Mid : ON / High : ILLUMINATE NTC(+) / NTC(-) Wiring Short Circuit - OFF ON ILLUMINATE NTC(+) / Heater(+) Wiring Short Circuit - ILLUMINATE ON OFF NTC(+) / Heater(-) Wiring Short Circuit - Heater(+) / Heater(-) Wiring Short Circuit - Heater(+) / NTC(-) Wiring Short Circuit When NTC protection circuit is applied, Low : OFF / Mid : ON / High : ILLUMINATE ILLUMINATE ON ILLUMINATE Target Temperature Not Reached Detection - Unsatisfactory Target Setting Temperature - [Heater seat - when applying 3 level / 2 pin indicator output] Indicator Fail content Fail description Remarks Low Mid High ILLUMINATE ILLUMINATE ILLUMINATE NTC / Heater Mat Disconnection detection Cushion / Back Heater Mat Disconnection - NTC(+) Wiring Disconnection - NTC(-) Wiring Disconnection - Heater(+) Wiring Disconnection - Heater(-) Wiring Disconnection - ILLUMINATE ILLUMINATE OFF NTC / Heater Mat Short Circuit detection NTC(+) / NTC(-) Short Circuit - ILLUMINATE ILLUMINATE ILLUMINATE NTC(+) / Heater(+) Short Circuit - ILLUMINATE ILLUMINATE OFF NTC(+) / Heater(-) Short Circuit - Heater(+) / Heater(-) Short Circuit - Heater(+) / NTC(-) Short Circuit When NTC protection circuit is applied, Low : ILLUMINATE / Mid : ILLUMINATE / High : ILLUMINATE NTC(+) / NTC(-) Wiring Short Circuit - ILLUMINATE ILLUMINATE ILLUMINATE NTC(+) / Heater(+) Wiring Short Circuit - ILLUMINATE ILLUMINATE ILLUMINATE NTC(+) / Heater(-) Wiring Short Circuit - Heater(+) / Heater(-) Wiring Short Circuit - Heater(+) / NTC(-) Wiring Short Circuit When NTC protection circuit is applied, Low : ILLUMINATE / Mid : ILLUMINATE / High : ILLUMINATE ILLUMINATE OFF OFF Target Temperature Not Reached Detection Unsatisfactory Target Setting Temperature - [Heater seat - when applying 2 level] Indicator Fail content Fail description Remarks Low High OFF ILLUMINATE NTC / Heater Mat Disconnection detection Cushion / Back Heater Mat Disconnection - NTC(+) Wiring Disconnection - NTC(-) Wiring Disconnection - Heater(+) Wiring Disconnection - Heater(-) Wiring Disconnection Heater Connector Not Connected Applies to 2nd row seats only ILLUMINATE OFF NTC / Heater Mat Short Circuit detection NTC(+) / NTC(-) Short Circuit - OFF ILLUMINATE NTC(+) / Heater(+) Short Circuit - ILLUMINATE OFF NTC(+) / Heater(-) Short Circuit - Heater(+) / Heater(-) Short Circuit - Heater(+) / NTC(-) Short Circuit When NTC protection circuit is applied, Low : OFF / High : ILLUMINATE NTC(+) / NTC(-) Wiring Short Circuit - OFF ILLUMINATE NTC(+) / Heater(+) Wiring Short Circuit - ILLUMINATE OFF NTC(+) / Heater(-) Wiring Short Circuit - Heater(+) / Heater(-) Wiring Short Circuit - Heater(+) / NTC(-) Wiring Short Circuit When NTC protection circuit is applied, Low : OFF / High : ILLUMINATE [Air ventilated seat - when applying 3 level] Indicator Fail content Fail description Remarks Low Mid High ON ILLUMINATE OFF Air Ventilated Blower Short Circuit detection Blower(+) / Blower(-) Short Circuit - Blower(+) / Blower Speed Short Circuit - Blower(-) / Blower Speed Short Circuit - Blower(+) / Blower RPM Short Circuit Applies only when receiving motor feedback signal ON OFF ILLUMINATE Blower(-) / Blower RPM Short Circuit Applies only when receiving motor feedback signal Blower Speed / Blower RPM Short Circuit Applies only when receiving motor feedback signal ON OFF ILLUMINATE Air Ventilated Blower Disconnection detection Blower(+) Disconnection - Blower(-) Disconnection - Blower Speed Signal Disconnection - ON ILLUMINATE OFF Blower RPM Signal Disconnection Applies only when receiving motor feedback signal [Air ventilated seat - when applying 2 level] Indicator Fail content Fail description Remarks Low High ON OFF Air Ventilated Blower Short Circuit detection Blower(+) / Blower(-) Short Circuit - Blower(+) / Blower Speed Short Circuit - Blower(-) / Blower Speed Short Circuit - Blower(+) / Blower RPM Short Circuit Applies only when receiving motor feedback signal ON ILLUMINATE Blower(-) / Blower RPM Short Circuit Applies only when receiving motor feedback signal Blower Speed / Blower RPM Short Circuit Applies only when receiving motor feedback signal ON ILLUMINATE Air Ventilated Blower Disconnection detection Blower(+) Disconnection - Blower(-) Disconnection - Blower Speed Signal Disconnection - ON OFF Blower RPM Signal Disconnection Applies only when receiving motor feedback signal

4.	If IGN is OFF, the fault diagnosis mode of the heater & air ventilated seat is terminated.

Power Seat Motor. Repair procedures

Inspection

1.	Disconnect the connectors for each motor. (Refer to Body - "Front Seat Assembly") B : Rear height motor C : Front height motor D : Lumbar support motor (Horizontal) E : Lumbar supprot motor (Vertical) F : Recline motor

2.	With the battery connected directly to the motor terminals, check if the motors run smoothly.

3.	Reverse the connections and check that the motor turns in reverse.

4.	If there is an abnormality, replace the motors.

1.	Disconnect the limit switch and operate the limit switch.

2.

3.	Make sure that the seat operation is normal in the reverse after the maximum operation.

4.	If there is an abnormality, replace the limit switch.

Power Seat Control Switch. Schematic diagrams

Circuit Diagram

Power Seat Control Switch. Repair procedures

Inspection

1.	With the power seat switch in each position, make sure that continuity exists between the terminals below. If continuity is not as specified, replace the power seat switch.

Removal

1.	Disconnect the negative (-) battery terminal.

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

3.	Remove the power seat control switch (A) after loosening the screws (2EA).

Installation

1.	Install the power seat control switch after connecting the connector.

2.	Install the front seat shield outer cover.

3.	Connect the negative (+) battery terminal.

Lumber Support System. Repair procedures

Removal

1.	Disconnect the negative (-) battery terminal.

2.	Remove the front seat back cover. (Refer to Body - "Front Seat Back Cover")

3.	Remove the air duct.

4.	Disconnect the lumber support motor connector (D)&(E).

5.	Remove the lumber support assembly after removing the rod (A) & mounting fasner (B).

Installation

1.	Install the lumber support assembly.

2.	Install the seat back cover.

3.	Install the front seat assembly.

Inspection

1.	Disconnect the connectors for motor.

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

3.	Reverse the connections and check that the motor turns in reverse.

4.	If the motor runs abnormally, replace it.

Seat Heater Switch. Components and components location

Components

1. Front seat heater switch

2. Rear seat heater switch

Seat Heater Switch. Schematic diagrams

Circuit Diagram

Pin	Description	Pin	Description
1	C-CAN (High)	21	ILL (+)
2	C-CAN (Low)	22	-
3	-	23	ILL (-)
4	-	24	Right seat heater signal
5	-	25	Right seat heater IND MIN
6	IGN	26	Right seat heater IND MID
7	-	27	Right seat heater IND MAX
8	Auto hold signal	28	Right ventilation seat signal
9	PDW signal	29	Right ventilation seat IND MIN
10	Steering wheel heater signal	30	Right ventilation seat IND MID
11	SVM signal	31	Right ventilation seat IND MAX
12	ISG signal	32	Left seat heater signal
13	DBC signal	33	Left seat heater IND MIN
14	-	34	Left seat heater IND MID
15	Steering wheel heater IND	35	Left seat heater IND MAX
16	ISG IND	36	Left ventilation seat signal
17	PDW IND	37	Left ventilation seat IND MIN
18	DETENT signal	38	Left ventilation seat IND MID
19	-	39	Left ventilation seat IND MAX
20	Ground	40	-

Seat Heater Switch. Repair procedures

Removal

1.	Disconnect the negative (-) battery terminal.

2.	Remove the console upper cover (A).

3.	Press the lock pin, separate the connectors (A).

4.	Remove the seat heater switch (A) and SBW switch assembly after loosening mounting screws.

Installation

1.	Install the front seat heater switch.

2.	Connect the negative (-) battery terminal.

Seat Heater (Non-Air Ventilation). Components and components location

Components

1. Seat cushion heater 2. Seat heater unit (Passenger only)

3. Seat back heater

1. Seat heater unit 2. Seat back heater

3. Seat cushion heater

Seat Heater (Non-Air Ventilation). Schematic diagrams

Components

Seat Heater (Non-Air Ventilation). Repair procedures

Inspection

1.	Check for continuity and measure the resistance between terminals. No. Description No. Description 1 Heater (+) 3 NTC (-) 2 NTC (+) 4 Heater (-) Driver/Passenger Fabric(± 5%) Leather(± 5%) High 2.56 kΩ 1.84 kΩ Middle 3.77 kΩ 3.22 kΩ Low 5.43 kΩ 5kΩ

2.	Operate the seat heater after connecting the connector, and then check the thermostat by measuring the temperature of seat surface. Driver/Passenger Fabric(± 2%) Leather(± 2%) High 42/50 °C 42/50 °C Middle 39/45 °C 39/45 °C Low 36/40 °C 36/40 °C

1.	Check for continuity and measure the resistance between terminals. [RH] [LH] No. Description No. Description 1 Heater (+) 3 NTC (-) 2 NTC (+) 4 Heater (-) Second Line Seat Fabric(± 5%) / Leather(± 5%) High 2.29 kΩ Low 4.25 kΩ

2.	Operate the seat heater after connecting the connector, and then check the thermostat by measuring the temperature of seat surface. Driver/Passenger Fabric Leather High 1.73V Low 1.14V

1.

Enter the diagnostic mode referring to below description. • In failure mode, press the ventilation seat button for 4 seconds and release it. • Press the ventilation seat button for 2 seconds and release it. • Lastly, press the ventilation seat button for 4 seconds and release it. • When entering the failure mode, the LED of the ventilation seat button turns ON/OFF/blinks at each stage.

2.	After entering the diagnosis mode, you can check what failed by checking the blinking LED.

3.	The table below indicates the failure based on priority, upper item means higher priority.

4.	If more than one failure is detected, higher priority failure is displayed through the LED flashing pattern.

5.

Lower priority failure will be displays if higher priority failure is reset. [Heater Switch] [Driver/Passenger] Failure indicator Inspection items Detailed inspections High : ON Middle : FLASHING Low : FLASHING (Low/Over voltage detection) Low : OFF (Fuse disconnection) Low voltage detection Over voltage detection Fuse disconnection 1) IGN1 Less than 8.5V 2) IGN1 Less than 16.5V 3) IGN2 fuse disconnection High : FLASHING Middle : ON Low : OFF Detection of NTC/Heater disconnect - NTC element failure - Heater mat disconnection 1) Cushion/Seat back heater mat disconnection 2) Disconnection in the NTC (+) wiring 3) Disconnection in the NTC (-) wiring 4) Disconnection in the heating wire (+) 5) Disconnection in the heating wire (-) High : OFF Middle : ON Low : FLASHING Short of between the connector terminals Disconnection in the NTC (+)/NTC (-) wiring High : OFF Middle : ON Low : FLASHING Short in the NTC (+)/Heater(-) wiring High : OFF Middle : ON Low : FLASHING Short of between the connector terminals 1) Short in the NTC (+)/Heater(-) wiring 2) Short in the Heater (+)/Heater(-) wiring 3) Short in the Heater (+)/NTC(-) wiring Heater wiring short 4) Disconnection in the NTC (+)/NTC (-) wiring High : FLASHING Middle : ON Low : OFF Heater wiring short Short in the Heater (+)/NTC(+) wiring High : OFF Middle : ON Low : FLASHING Heater wiring short 1) Short in the NTC(+)/Heater (-) wiring 2) Short in the Heater (+)/Heater(-) wiring 3) Short in the Heater (+)/NTC(-) wiring High : FLASHING Middle : ON Low : FLASHING Loss of temperature feedback Target temperature not reached within 40 minutes [Second line seat heater] Failure indicator Inspection items Detailed inspections High : OFF Low : FLASHING Low voltage detection Over voltage detection 1) IGN1 Less than 8.5V 2) IGN1 Less than 16.5V High : ON Low : OFF Fuse disconnection IGN2 fuse disconnection High : ON Low : FLASHING Detection of NTC/Heater disconnect 1) Cushion/Seat back heater mat disconnection 2) Disconnection in the NTC (+) wiring 3) Disconnection in the NTC (-) wiring 4) Disconnection in the heating wire (+) 5) Disconnection in the heating wire (-) High : FLASHING Low : OFF Short of between the connector terminals Short in the NTC (+)/NTC (-) wiring High : FLASHING Low : ON Short in the NTC (+)/Heater (-) wiring High : FLASHING Low : OFF Short of between the connector terminals 1) Short in the NTC (+)/Heater (-) wiring 2) Short in the Heater (+)/Heater (-) wiring 3) Short in the Heater (+)/NTC (-) wiring Heater wiring short Short in the NTC (+)/NTC (-) wiring High : ON Low : FLASHING Heater wiring short Short in the NTC (+)/Heater (+) wiring High : FLASHING Low : OFF Heater wiring short 1) Short in the NTC (+)/Heater (-) wiring 2) Short in the Heater (+)/Heater (-) wiring 3) Short in the Heater (+)/NTC (-) wiring High : OFF Low : ON Loss of temperature feedback Target temperature not reached within 40 minutes

6.	If you press the seat heater button for more than five seconds, the LED for malfunctioning memory will blink four times and the recorded memory will be deleted.

7.	Pressing the IGN OFF button will end the diagnosis mode for the seat.

8.	You can check whether the heating seat system works properly after turning the IGN ON. If you want to check the error code, you can refer to the procedure of 2 above.

Seat Heater (Air Ventilation). Components and components location

Components

1. Seat cushion heater 2. Seat heater unit (Passenger only)

3. Seat back heater

No.	Connector A	Connector B	Connector C
1	Vent heater ECU _ IGN1	Driver vent switch LED (Low)	Vent / heater power
2	Driver blower power	Driver vent switch LED (Mid)	Driver heater power
3	Driver blower speed	Driver vent switch LED (High)	Driver heater ground
4	Driver RPM input	Driver NTC (+)	Driver / Assist, Vent / Heater ground
5	Driver heater switch	-	vent / heater power
6	Driver vent switch	Illumination (-)	-
7	Illumination (+)	Driver NTC (-)	Assist heater power
8	Driver heater LED (Low)	Driver blower ground	-
9	Driver heater LED (Mid)	Driver vent led (Low)	Assist heater ground
10	Driver heater LED (High)	Driver vent led (Mid)	Driver / Assist, Vent / Heater ground
11	Vent seat unit IGN 2	Driver vent led (High)
12	Assist blower power	Assist NTC (+)
13	Assist blower speed	FATC PWM
14	Assist blower RPM input	-
15	Assist heater switch	Assist NTC (-)
16	Assist vent switch	Assist blower ground
17	Detent
18	Assist heater LED (Low)
19	Assist heater LED (Mid)
20	Assist heater LED (High)

Seat Heater (Air Ventilation). Schematic diagrams

Circuit Diagram

Seat Heater (Air Ventilation). Repair procedures

Inspection

1.	Check for continuity and measure the resistance between terminals. No. Description No. Description 1 Heater (+) 3 NTC (-) 2 NTC (+) 4 Heater (-) Driver/Passenger Fabric(± 5%) Leather(± 5%) High 2.56 kΩ 1.84 kΩ Middle 3.77 kΩ 3.22 kΩ Low 5.43 kΩ 5kΩ

2.	Operate the seat heater after connecting the connector, and then check the thermostat by measuring the temperature of seat surface. Driver/Passenger Fabric(± 2%) Leather(± 2%) High 42/50 °C 42/50 °C Middle 39/45 °C 39/45 °C Low 36/40 °C 36/40 °C

Air Ventilation Seat. Components and components location

Component Location

1. Air ventilation seat blower 2. Air ventilation seat control unit (Passenger only)

3. Air ventilation seat duct

Air Ventilation Seat. Schematic diagrams

Circuit Diagram

No.	Connector A	Connector B	Connector C
1	Vent heater ECU _ IGN1	Driver vent switch LED (Low)	Vent / heater power
2	Driver blower power	Driver vent switch LED (Mid)	Driver heater power
3	Driver blower speed	Driver vent switch LED (High)	Driver heater ground
4	Driver RPM input	Driver NTC (+)	Driver / Assist, Vent / Heater ground
5	Driver heater switch	-	vent / heater power
6	Driver vent switch	Illumination (-)	-
7	Illumination (+)	Driver NTC (-)	Assist heater power
8	Driver heater LED (Low)	Driver blower ground	-
9	Driver heater LED (Mid)	Driver vent led (Low)	Assist heater ground
10	Driver heater LED (High)	Driver vent led (Mid)	Driver / Assist, Vent / Heater ground
11	Vent seat unit IGN 2	Driver vent led (High)
12	Assist blower power	Assist NTC (+)
13	Assist blower speed	FATC PWM
14	Assist blower RPM input	-
15	Assist heater switch	Assist NTC (-)
16	Assist vent switch	Assist blower ground
17	Detent
18	Assist heater LED (Low)
19	Assist heater LED (Mid)
20	Assist heater LED (High)

Air Ventilation Seat. Repair procedures

Removal

1.	Remove the front seat assembly. (Refer to Body - "Front Seat Assembly")

2.	Remove the cushion blower(A) after loosening the screws(3EA) and disconnecting the connector.

1.	Remove the front seat assembly. (Refer to Body - "Front Seat Assembly")

2.	Remove the air duct (A) after loosening the screws and disconnecting the connector.

1.	Remove the front seat assembly. (Refer to Body - "Front Seat Assembly")

2.	Remove the air ventilation unit(A) after loosening the screws(2EA) and disconnecting the connector.

Installation

1.	Install the cushion blower.

2.	Install the front seat assembly.

1.	Install the air duct.

2.	Install the front seat assembly.

1.	Install the air ventilation unit.

2.	Install the front seat assembly.

Walk-in Switch. Components and components location

Component Location

Walk-in Switch. Schematic diagrams

Circuit Diagram

Walk-in Switch. Repair procedures

Removal

1.	Remove the rear seat. (Body - "Rear Seat Assembly")

2.	Disconnect the walk in actuator connector and then remove the actuator.

3.	Remove the cable (A) and then separate the walk in actuator.

1.	Remove the rear seat walk in switch (A).

2.	Remove the walk in switch by using a flat-head screwdriver and then disconnect the walk in switch connector (A).

1.	Loosen the screw and then remove the rear seat recliner knob (A).

2.	Loosen the screw and then remove the rear seat recliner cover (A).

3.	Remove the walk in swtich (A) after loosening the connector.

1.	Remove the luggage side trim. (Refer to Body - "Luggage Side Trim")

2.	Remove the luggage remote folding switch (A).

IMS (Integrated Memory)

Description and operation Description The optimal seat position set by the driver is memorized into the power seat unit by using IMS switch. In case of the position change, the seat can restore its preset ...

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