Driver Side Seat Heater does not Operate [10/2014 - ]: Procedure

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

   Result

   Result	Proceed to
   DTC B14C1 is not output	A
   DTC B14C1 is output	B

Result: 

B 

GO TO DIAGNOSTIC TROUBLE CODE CHART 

(Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2014 - ] )

Result: 

A 

See step  2

1. Disconnect the S12 seat heater control sub-assembly LH connector.
2. Measure the voltage and resistance according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   S12-1 - Body ground	Engine switch on (IG)	11 to 14 V

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   S12-5 - Body ground	Always	Below 1 Ω

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

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

Result: 

NG 

REPLACE FRONT SEATBACK HEATER ASSEMBLY LH 

(Refer to REMOVAL [10/2014 - ] )

Result: 

OK 

See step  5

1. Remove the refreshing seat switch (Refer to REMOVAL [10/2014 - ] ).
2. Inspect the refreshing seat switch (Refer to INSPECTION [10/2014 - ] ).

Result: 

NG 

REPLACE REFRESHING SEAT SWITCH 

(Refer to REMOVAL [10/2014 - ] )

Result: 

OK 

See step  6

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
   D63-18 (SVDS) - D39-3 (RVL)	Always	Below 1 Ω
   D63-7 (SG-5) - D39-4 (SW-)	Always	Below 1 Ω
   D63-9 (S5-2) - D39-6 (SW+)	Always	Below 1 Ω
   D63-18 (SVDS) - Body ground	Always	10 kΩ or higher
   D63-7 (SG-5) - Body ground	Always	10 kΩ or higher
   D63-9 (S5-2) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  7

1. Disconnect the D62 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
   D62-40 (SHD+) - S12-3	Always	Below 1 Ω
   D63-4 (TSL) - S12-2	Always	Below 1 Ω
   D63-23 (SGND) - S12-4	Always	Below 1 Ω
   D62-40 (SHD+) - Body ground	Always	10 kΩ or higher
   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  8

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

Result: 

NEXT 

See step  9

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 - ] )