RM38N0EC _58 Vehicle Interior _111839 SEAT _0505696 SEAT HEATER SYSTEM C

SEAT  SEAT HEATER SYSTEM  B14C111  Front Left Seat Heat Sensor Circuit Short to Ground  B14C115  Front Left Seat Heat Sensor Circuit Short to Battery or Open  


DESCRIPTION

Output to the front seat cushion heater 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.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Priority
B14C111 Front Left Seat Heat Sensor Circuit Short to Ground A short to ground in the temperature sensor circuit of the front left seat heater occurs for 4 seconds or more.
·

Air conditioning amplifier assembly

·

Front seat cushion heater assembly LH

·

Wire harness or connector


Air Conditioner A
B14C115 Front Left Seat Heat Sensor Circuit Short to Battery or Open A short to +B or open in the temperature sensor circuit of the front left seat heater occurs for 4 seconds or more.
·

Air conditioning amplifier assembly

·

Front seat cushion heater assembly LH

·

Wire harness or connector


Air Conditioner A

WIRING DIAGRAM

B583182E05
2.135,0.344 2.448,0.542 0.313,0.198 10 false TSL 2.521,0.875 2.833,1.073 0.313,0.198 10 false 3 2.042,1.01 2.802,1.271 0.76,0.26 10 false SG-7 1.167,0.667 1.552,0.917 0.385,0.25 10 false 5V 2.49,0.365 2.802,0.563 0.313,0.198 10 false 13 4.156,0.365 4.469,0.563 0.313,0.198 10 false 4 4.167,0.885 4.479,1.083 0.313,0.198 10 false 5 0.969,1.479 1.729,1.74 0.76,0.26 10 false E47 0.99,1.656 3.25,1.948 2.26,0.292 10 false Air Conditioning Amplifier Assembly 4.313,1.479 4.76,1.74 0.448,0.26 10 false U27 4.323,1.625 5.646,2.104 1.323,0.479 10 false Front Seat Cushion Heater Assembly LH 4.177,2.302 4.49,2.5 0.313,0.198 10 false 5 4.354,2.823 4.802,3.083 0.448,0.26 10 false U5 4.354,2.979 5.708,3.469 1.354,0.49 10 false Front Seat Cushion Heater Assembly RH

PROCEDURE

1.CLEAR DTC
a.

Clear the DTCs.

Body Electrical > Air Conditioner > Clear DTCs
50002 450

Result:
Proceed to
NEXT



NEXT

2.CHECK FOR DTC
2.CHECK FOR DTC
a.

Check for DTCs.

Body Electrical > Air Conditioner > Trouble Codes
50001 450
Result:
Result Proceed to
B14C111 and B14C115 are not output A
B14C111 or B14C115 is output B




A

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


B

3.INSPECT FRONT SEAT CUSHION HEATER ASSEMBLY LH
4.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - FRONT SEAT CUSHION HEATER ASSEMBLY LH)

Pre-procedure1

a.

Disconnect the E47 air conditioning amplifier assembly connector.


b.

Disconnect the U5 front seat cushion heater assembly RH connector.


Procedure1

c.

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

Standard Resistance:
Tester Connection Condition Specified Condition

Click Location & Routing(E47,U27)Location & Routing

Click Connector(E47)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>Air Conditioning Amplifier Assembly

Click Connector(U27)Seat>Front Seat Wire RH / Front Seat Wire LH>Front Seat Cushion Heater Assembly LH

E47-13 (TSL) - U27-4 Always Below 1 Ω
E47-13 (TSL) or U27-4 - Body ground Always 10 kΩ or higher
E47-3 (SG-7) - U27-5 Always Below 1 Ω
E47-3 (SG-7) or U27-5 - Body ground Always 10 kΩ or higher


Result:
Proceed to
OK
NG



Post-procedure1

d.

None



OK

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR