Diagnostic Chart

Symptoms	Repair order
Front seat heater does not operate.	1. Check the fuse. Refer to SEATS>SEAT HEATER SYSTEM>INSPECTION>CHECK SEAT HEATER FUSE .
	2. Check the relay. Refer to SEATS>SEAT HEATER SYSTEM>INSPECTION>SEAT HEATER SWITCH (FRONT) .
	3. Check the seat heater system harness circuit. Refer to SEATS>SEAT HEATER SYSTEM>INSPECTION>CHECK SEAT HEATER RELAY .
	4. Check the seat heater unit. Refer to SEATS>SEAT HEATER SYSTEM>INSPECTION>SEAT HEATER UNIT (FRONT) .
	5. Check the seat heater switch. Refer to SEATS>SEAT HEATER SYSTEM>INSPECTION>SEAT HEATER SWITCH (FRONT) .
Rear seat heater does not operate.	1. Check the fuse. Refer to SEATS>SEAT HEATER SYSTEM>INSPECTION>CHECK SEAT HEATER FUSE .
	2. Check the seat heater system harness circuit. Refer to SEATS>SEAT HEATER SYSTEM>INSPECTION>SEAT HEATER SWITCH (REAR) .
	3. Check the seat heater unit. Refer to SEATS>SEAT HEATER SYSTEM>INSPECTION>SEAT HEATER UNIT (REAR) .
	4. Check the seat heater switch. Refer to SEATS>SEAT HEATER SYSTEM>INSPECTION>SEAT HEATER SWITCH (REAR) .
	5. When the rear seat heater does not operate even when the above inspections were performed, replace the rear seat heater Control Module.
The seat heater switch indicator does not illuminate.	1. Check the front seat heater switch. Refer to SEATS>SEAT HEATER SYSTEM>INSPECTION>CHECK SEAT HEATER SWITCH INDICATOR (FRONT) .
The seat heater switch indicator does not illuminate.	2. Check the rear seat heater switch. Refer to SEATS>SEAT HEATER SYSTEM>INSPECTION>CHECK SEAT HEATER SWITCH INDICATOR (REAR) .
The illumination of seat heater switch does not illuminate.	1. Check the front seat heater switch. Refer to SEATS>SEAT HEATER SYSTEM>INSPECTION>CHECK SEAT HEATER SWITCH ILLUMINATION (FRONT) .
The illumination of seat heater switch does not illuminate.	2. Check the rear seat heater switch. Refer to SEATS>SEAT HEATER SYSTEM>INSPECTION>CHECK SEAT HEATER SWITCH ILLUMINATION (REAR) .