DTC B14C1: Front Left Seat Heat Sensor Circuit: Procedure

1. Clear the DTCs. Refer to DTC CHECK / CLEAR .

NEXT: Go to next step 

1. Check for DTCs. Refer to DTC CHECK / CLEAR .

   OK

   DTC B14C1 is not output.

NG → See step   3 

OK → See step   9 

1. Turn the power switch off.
2. Connect the Techstream to the DLC3.
3. Turn the power switch on (IG).
4. Turn the Techstream on.
5. Enter the following menus: Body Electrical / Air Conditioner / Data List.
6. Read the Data List according to the display on the Techstream.
   AIR CONDITIONER
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   FL Seat Heater Temperature	Driver seat heater temperature / Min: -29.70°C (-85.95°F) Max: 59.55°C (139.19°F)	Actual driver seat heater temperature displayed	-

   OK

   The display is as specified in the normal condition column.

NG → See step   4 

OK → See step   11 

1. Remove the front seat cushion heater assembly LH. Refer to REMOVAL .
2. Inspect the front seat cushion heater assembly LH. Refer to INSPECTION .

NG → See step   10 

OK: Go to next step 

1. Disconnect the E116 air conditioning amplifier assembly connector.
2. Disconnect the K32 front seat cushion heater assembly LH connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E116-2 (TSL) - K32-5 (TDC+)	Always	Below 1 Ω
   E116-19 (SG) - K32-4 (TDC-)	Always	Below 1 Ω
   E116-2 (TSL) - Body ground	Always	10 kΩ or higher
   E116-19 (SG) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Temporarily replace the seat heater control sub-assembly LH with a new or normally functioning one. Refer to REMOVAL .

NEXT: Go to next step 

1. Clear the DTCs. Refer to DTC CHECK / CLEAR .

NEXT: Go to next step 

1. Check for DTCs. Refer to DTC CHECK / CLEAR .

   OK

   DTC B14C1 is not output.

NG → See step   11 

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