RM36D0EC _58 Vehicle Interior _083102 SEAT _0407267 SEAT HEATER SYSTEM(for Gasoline Model) J

SEAT  SEAT HEATER SYSTEM(for Gasoline Model)  Seat Heater for Front Right Seat does not Operate  


DESCRIPTION

When the RH side refreshing seat switch (seat heater switch) is operated, the air conditioning amplifier assembly receives the signal. The air conditioning amplifier assembly receives the signal and operates the RH side front seat heater.

WIRING DIAGRAM

E409346E05
0.198,4.813 1.792,5.177 1.594,0.365 10 false Air Conditioning Amplifier Assembly 2.104,4.49 3.333,4.865 1.229,0.375 10 false Seat Heater Control Sub-assembly RH 3.938,4.458 5.542,5.01 1.604,0.552 10 false Separate Type Front Seat Cushion Cover RH (Front Seat Cushion Heater) 5.677,4.427 6.927,5.094 1.25,0.667 10 false Separate Type Front Seatback Cover RH (Front Seatback Heater) 0.719,5.396 2.49,5.583 1.771,0.188 10 false : LIN Communication Line 5.354,1 6.813,1.365 1.458,0.365 10 false Refreshing Seat Switch (Seat Heater Switch) 1.906,1.125 2.677,1.302 0.771,0.177 10 false S/HTR F/R 3.188,0.948 4.708,1.135 1.521,0.188 10 false from S/HTR FR Relay 5.646,0.469 6.052,0.656 0.406,0.188 10 false SLIN 0.917,0.469 1.26,0.635 0.344,0.167 10 false LIN1 2.104,4.333 2.385,4.51 0.281,0.177 10 false S3 2.177,2.875 2.406,3.052 0.229,0.177 10 false B1 2.177,3.906 2.563,4.083 0.385,0.177 10 false SWR 3.083,2.885 3.313,3.063 0.229,0.177 10 false E1 3.031,3.917 3.323,4.094 0.292,0.177 10 false HIR 0.188,4.656 0.573,4.833 0.385,0.177 10 false G48 0.823,3.927 1.281,4.094 0.458,0.167 10 false SM1R 1.302,3.792 1.51,3.969 0.208,0.177 10 false 12 1.948,3.792 2.094,3.958 0.146,0.167 10 false 5 1.969,2.771 2.115,2.938 0.146,0.167 10 false 1 3.344,2.76 3.552,2.938 0.208,0.177 10 false 10 3.365,3.792 3.51,3.979 0.146,0.188 10 false 7 3.927,3.906 4.219,4.073 0.292,0.167 10 false S17 3.927,2.875 4.219,3.042 0.292,0.167 10 false S17 3.917,1.927 4.208,2.094 0.292,0.167 10 false S17 4.01,3.646 4.135,3.833 0.125,0.188 10 false 1 4.01,2.625 4.135,2.813 0.125,0.188 10 false 6 4.01,1.688 4.135,1.875 0.125,0.188 10 false 2

CAUTION / NOTICE / HINT

NOTICE:
·

If the battery voltage is low, the seat heater system may not operate. When "High Power Consumption Partial Limit on AC/Heater Operation" is displayed on the multi-information display in the combination meter assembly, inspect the battery, referring to On-vehicle Inspection for the charging system.

for M20C-FKS: Click herePower Source / Network>M20C-FKS (BATTERY / CHARGING)>CHARGING SYSTEM>ON-VEHICLE INSPECTION

for M20D-FKS: Click herePower Source / Network>M20D-FKS (BATTERY / CHARGING)>CHARGING SYSTEM>ON-VEHICLE INSPECTION

·

If the seat heater system is operated when the battery voltage is low, due to the electrical load limit control that gives voltage supply priority to the power steering system, the seat heater system may not operate. In this case, check the vehicle control history of the power steering system and check that "Battery Voltage Drop: X208F" is not stored before proceeding with troubleshooting.

Click hereSteering>POWER ASSIST SYSTEMS>POWER STEERING SYSTEM>VEHICLE CONTROL HISTORY



HINT:

Inspect the fuse related to this system before inspecting the suspected areas below.


PROCEDURE

1.PERFORM ACTIVE TEST USING GTS (SEAT HEATER)
a.

Connect the GTS to the DLC3.


b.

Turn the engine switch on (IG).


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / Air Conditioner / Active Test.


e.

Perform the Active Test according to the display on the GTS.

Body Electrical > Air Conditioner > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
Front Right Seat Heater RH side front seat heater operation OFF/ON -
Body Electrical > Air Conditioner > Active Test
Tester Display
Front Right Seat Heater
50004 450 17
OK:

RH side front seat heater operates normally.



Result:
Proceed to
OK
NG



OK

2.REPLACE REFRESHING SEAT SWITCH (SEAT HEATER SWITCH)

NG

4.CHECK HARNESS AND CONNECTOR (SEAT HEATER CONTROL SUB-ASSEMBLY RH - BATTERY)
2.REPLACE REFRESHING SEAT SWITCH (SEAT HEATER SWITCH)
a.

Replace the refreshing seat switch (seat heater switch) with a new or known good one.

Click hereVehicle Interior>SEAT>SEAT HEATER SWITCH (for Front Seat)>REMOVAL


Result:
Proceed to
NEXT



NEXT

3.CHECK FRONT SEAT HEATER OPERATION
3.CHECK FRONT SEAT HEATER OPERATION
a.

Check the RH side front seat heater operation.

Click hereVehicle Interior>SEAT>SEAT HEATER SYSTEM (for Gasoline Model)>OPERATION CHECK

OK:

RH side front seat heater operates normally.



Result:
Proceed to
OK
NG



OK

END (REFRESHING SEAT SWITCH (SEAT HEATER SWITCH) WAS DEFECTIVE)

NG

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING AMPLIFIER>REMOVAL


4.CHECK HARNESS AND CONNECTOR (SEAT HEATER CONTROL SUB-ASSEMBLY RH - BATTERY)
a.
B480034C13
1.563,0.281 1.917,0.552 0.354,0.271 0.875,1.896 0.99,1.896 0.99,1.896 1.313,1.302 true 1.646,0.333 1.896,0.51 0.25,0.177 10 false S3 0.208,0.104 0.458,0.281 0.25,0.177 10 false *a 0.677,1.823 0.885,1.99 0.208,0.167 10 false B1
*a Front view of wire harness connector
(to Seat Heater Control Sub-assembly RH)


Disconnect the seat heater control sub-assembly RH connector.


b.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
Tester Connection Switch Condition Specified Condition
S3-1 (B1) - Body ground Engine switch on (IG) 11 to 14 V
S3-1 (B1) - Body ground Engine switch off Below 1 V



Result:
Proceed to
OK
NG



OK

5.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - SEAT HEATER CONTROL SUB-ASSEMBLY RH)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - SEAT HEATER CONTROL SUB-ASSEMBLY RH)
a.

Disconnect the G48 air conditioning amplifier assembly connector.


b.

Disconnect the S3 seat heater control sub-assembly RH connector.


c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
G48-12 (SM1R) - S3-5 (SWR) Always Below 1 Ω
G48-12 (SM1R) or S3-5 (SWR) - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

6.CHECK HARNESS AND CONNECTOR (SEPARATE TYPE FRONT SEAT CUSHION COVER RH (FRONT SEAT CUSHION HEATER) - SEAT HEATER CONTROL SUB-ASSEMBLY RH AND BODY GROUND)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CHECK HARNESS AND CONNECTOR (SEPARATE TYPE FRONT SEAT CUSHION COVER RH (FRONT SEAT CUSHION HEATER) - SEAT HEATER CONTROL SUB-ASSEMBLY RH AND BODY GROUND)
a.

Disconnect the S17 separate type front seat cushion cover RH (front seat cushion heater) connector.


b.

Disconnect the S3 seat heater control sub-assembly RH connector.


c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
S17-6 - S3-10 (E1) Always Below 1 Ω
S17-6 or S3-10 (E1) - Other terminals and body ground Always 10 kΩ or higher
S17-1 - S3-7 (HIR) Always Below 1 Ω
S17-1 or S3-7 (HIR) - Other terminals and body ground Always 10 kΩ or higher
S17-2 - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

7.INSPECT SEPARATE TYPE FRONT SEAT CUSHION COVER RH (FRONT SEAT CUSHION HEATER)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.INSPECT SEPARATE TYPE FRONT SEAT CUSHION COVER RH (FRONT SEAT CUSHION HEATER)
a.

Remove the separate type front seat cushion cover RH (front seat cushion heater).

Click hereVehicle Interior>SEAT>FRONT SEAT CUSHION HEATER (for GTMC Made Power Seat)>REMOVAL


b.

Inspect the separate type front seat cushion cover RH (front seat cushion heater).

Click hereVehicle Interior>SEAT>FRONT SEAT CUSHION HEATER (for GTMC Made Power Seat)>INSPECTION


Result:
Proceed to
OK
NG



OK

8.INSPECT SEPARATE TYPE FRONT SEATBACK COVER RH (FRONT SEATBACK HEATER)

NG

REPLACE SEPARATE TYPE FRONT SEAT CUSHION COVER RH (FRONT SEAT CUSHION HEATER)

Click hereVehicle Interior>SEAT>FRONT SEAT CUSHION HEATER (for GTMC Made Power Seat)>REMOVAL


8.INSPECT SEPARATE TYPE FRONT SEATBACK COVER RH (FRONT SEATBACK HEATER)
a.

Remove the separate type front seatback cover RH (front seatback heater).

Click hereVehicle Interior>SEAT>FRONT SEATBACK HEATER (for GTMC Made Power Seat)>REMOVAL


b.

Inspect the separate type front seatback cover RH (front seatback heater).

Click hereVehicle Interior>SEAT>FRONT SEATBACK HEATER (for GTMC Made Power Seat)>INSPECTION


Result:
Proceed to
OK
NG



OK

9.REPLACE SEAT HEATER CONTROL SUB-ASSEMBLY RH

NG

REPLACE SEPARATE TYPE FRONT SEATBACK COVER RH (FRONT SEATBACK HEATER)

Click hereVehicle Interior>SEAT>FRONT SEATBACK HEATER (for GTMC Made Power Seat)>REMOVAL


9.REPLACE SEAT HEATER CONTROL SUB-ASSEMBLY RH
a.

Replace the seat heater control sub-assembly RH with a new or known good one.

Click hereVehicle Interior>SEAT>SEAT HEATER CONTROL (for GTMC Made Power Seat)>REMOVAL


Result:
Proceed to
NEXT



NEXT

10.CHECK FRONT SEAT HEATER OPERATION
10.CHECK FRONT SEAT HEATER OPERATION
a.

Check the RH side front seat heater operation.

Click hereVehicle Interior>SEAT>SEAT HEATER SYSTEM (for Gasoline Model)>OPERATION CHECK

OK:

RH side front seat heater operates normally.



Result:
Proceed to
OK
NG



OK

END (SEAT HEATER CONTROL SUB-ASSEMBLY RH WAS DEFECTIVE)

NG

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING AMPLIFIER>REMOVAL