Seat Heater for Rear Left Seat does not Operate [06/2015 - ]: Procedure

1. Remove the rear seat heater switch LH.

   Refer to REMOVAL [06/2015 - ]

2. Inspect the rear seat heater switch LH.

   Refer to INSPECTION [06/2015 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE REAR SEAT HEATER SWITCH LH. Refer to  REMOVAL [06/2015 - ] 

Result: 

OK 

See step  2

1. Disconnect the rear seat heater switch LH connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Rear Seat Heater Switch LH)

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   P33-2 (IG) - Body ground	Power switch on (IG)	11 to 14 V

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   P33-6 (E) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Disconnect the P33 rear seat heater switch LH connector.
2. Disconnect the Q24 rear seatback cover sub-assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   P33-3 (HI) - Q24-8 (HI)	Always	Below 1 Ω
   P33-3 (HI) - Body ground	Always	10 KΩ or higher
   Q24-8 (HI) - Body ground	Always	10 KΩ or higher
   P33-1 (LO) - Q24-7 (LO)	Always	Below 1 Ω
   P33-1 (LO) - Body ground	Always	10 KΩ or higher
   Q24-7 (LO) - Body ground	Always	10 KΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Disconnect the Q24 rear seatback cover sub-assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   Q24-3 (E) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

1. Remove the rear seatback cover sub-assembly.

   Refer to REMOVAL [06/2015 - ]

2. Inspect the rear seatback cover sub-assembly.

   Refer to INSPECTION [06/2015 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (REAR SEAT CUSHION COVER SUB-ASSEMBLY LH WAS DEFECTIVE) 

Result: 

NG 

REPLACE REAR SEATBACK COVER SUB-ASSEMBLY. Refer to  REMOVAL [06/2015 - ]