B14F2
SEAT: CLIMATE CONTROL SEAT SYSTEM: B14F2: Seat Heater Temperature Sensor Malfunction
B14F2 - Seat Heater Temperature Sensor Malfunction
DESCRIPTION
Output to the rear cushion cover's temperature sensor stops if one of the following occurs: 1) the temperature sensor is open or shorted; or 2) the temperature sensor is damaged and its output value does not change.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK FOR DTC
(a) Check for DTCs Climate Control Seat System.
Result
D -- READ VALUE USING TECHSTREAM (SEAT HEATER TEMPERATURE SENSOR)
C -- READ VALUE USING TECHSTREAM (SEAT HEATER TEMPERATURE SENSOR)
B -- READ VALUE USING TECHSTREAM (SEAT HEATER TEMPERATURE SENSOR)
A -- Continue to next step.
2. READ VALUE USING TECHSTREAM (SEAT HEATER TEMPERATURE SENSOR)
(a) Check the Data List for proper functioning of the temperature sensor.
Front Left Seat A/C
OK:
The display is as specified in the normal condition.
NG -- INSPECT FRONT SEAT CUSHION COVER LH
OK -- REPLACE SEAT CLIMATE CONTROL ECU Disassembly
3. INSPECT FRONT SEAT CUSHION COVER LH
(a) Disconnect the e42 cushion cover connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE FRONT SEAT CUSHION COVER LH Disassembly
OK -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - FRONT SEAT CUSHION COVER LH)
(a) Disconnect the e35 ECU connector.
(b) Disconnect the e42 cushion cover connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE SEAT CLIMATE CONTROL ECU Disassembly
5. READ VALUE USING TECHSTREAM (SEAT HEATER TEMPERATURE SENSOR)
(a) Check the Data List for proper functioning of the temperature sensor.
Front Right Seat A/C
OK:
The display is as specified in the normal condition.
NG -- INSPECT FRONT SEAT CUSHION COVER RH
OK -- REPLACE SEAT CLIMATE CONTROL ECU Disassembly
6. INSPECT FRONT SEAT CUSHION COVER RH
(a) Disconnect the e9 cushion cover connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE FRONT SEAT CUSHION COVER RH Disassembly
OK -- Continue to next step.
7. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - FRONT SEAT CUSHION COVER RH)
(a) Disconnect the e3 ECU connector.
(b) Disconnect the e9 cushion cover connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE SEAT CLIMATE CONTROL ECU Disassembly
8. READ VALUE USING TECHSTREAM (SEAT HEATER TEMPERATURE SENSOR)
(a) Check the Data List for proper functioning of the temperature sensor.
Rear Left Seat A/C
OK:
The display is as specified in the normal condition.
NG -- INSPECT REAR SEAT CUSHION COVER LH
OK -- REPLACE SEAT CLIMATE CONTROL ECU Disassembly
9. INSPECT REAR SEAT CUSHION COVER LH
(a) Disconnect the cushion cover LH connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE REAR SEAT CUSHION COVER LH Disassembly
OK -- Continue to next step.
10. INSPECT REAR SEATBACK COVER LH
(a) Disconnect the Y cushion cover connector.
(b) Disconnect the f23 seatback cover connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE REAR SEATBACK COVER LH Disassembly
OK -- Continue to next step.
11. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - REAR SEATBACK COVER LH)
(a) Disconnect the f27 ECU connector.
(b) Disconnect the f23 seatback cover connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE SEAT CLIMATE CONTROL ECU Disassembly
12. READ VALUE USING TECHSTREAM (SEAT HEATER TEMPERATURE SENSOR)
(a) Check the Data List for proper functioning of the temperature sensor.
Rear Right Seat A/C
OK:
The display is as specified in the normal condition.
Result
C -- REPLACE SEAT CLIMATE CONTROL ECU Disassembly
B -- REPLACE SEAT CLIMATE CONTROL ECU Disassembly
A -- Continue to next step.
13. INSPECT REAR SEAT CUSHION COVER RH
(a) Disconnect the f3 cushion cover connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
Result
C -- REPLACE REAR SEAT CUSHION COVER RH Disassembly
B -- REPLACE REAR SEAT CUSHION COVER RH Disassembly
A -- Continue to next step.
14. INSPECT REAR SEATBACK COVER RH
(a) Disconnect the Z cushion cover connector.
(b) Disconnect the f3 seatback cover connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
Result
C -- REPLACE REAR SEATBACK COVER RH Disassembly
B -- REPLACE REAR SEATBACK COVER RH Disassembly
A -- Continue to next step.
15. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - REAR SEATBACK COVER RH)
(a) Disconnect the f7 ECU connector.
(b) Disconnect the f3 seatback cover connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
Result
C -- REPAIR OR REPLACE HARNESS OR CONNECTOR
B -- REPLACE SEAT CLIMATE CONTROL ECU Disassembly
A -- REPLACE SEAT CLIMATE CONTROL ECU Disassembly