DTC B14C1: Front Left Seat Heat Sensor Circuit [10/2014 - ]: Procedure

1. Clear the DTCs (Refer to DTC CHECK / CLEAR [10/2014 - ] ).

Result: 

NEXT 

See step  2

1. Check for DTCs (Refer to DTC CHECK / CLEAR [10/2014 - ] ).

   OK

   DTC B14C1 is not output.

Result: 

OK 

USE SIMULATION METHOD TO CHECK 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] or HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

Result: 

NG 

See step  3

1. Remove the front seat cushion heater assembly LH (Refer to REMOVAL [10/2014 - ] ).
2. Inspect the front seat cushion heater assembly LH (Refer to INSPECTION [10/2014 - ] ).

Result: 

NG 

REPLACE FRONT SEAT CUSHION HEATER ASSEMBLY LH 

(Refer to REMOVAL [10/2014 - ] )

Result: 

OK 

See step  4

1. Disconnect the D63 air conditioning amplifier assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D63-4 (TSL) - S12-2	Always	Below 1 Ω
   D63-23 (SGND) - S12-4	Always	Below 1 Ω
   D63-4 (TSL) - Body ground	Always	10 kΩ or higher
   D63-23 (SGND) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

1. Replace the seat heater control sub-assembly LH (Refer to DISASSEMBLY [10/2014 - 06/2017] or DISASSEMBLY [06/2017 - ] ).

Result: 

NEXT 

See step  6

1. Check that the front seat heater (Refer to OPERATION CHECK [10/2014 - ] ).

   OK

   The front seat heater operates normally.

Result: 

OK 

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

Result: 

NG 

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY 

(Refer to REMOVAL [10/2014 - ] )