Tech Tips
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
| Symptom | Suspected Area | See page |
|---|---|---|
| Both front seat heaters do not operate (w/o climate control system) | LH-IG fuse | - |
| SEAT-HTR fuse | - | |
| Front seat heater switch | ||
| Harness or connector | - | |
| Both front seat heaters do not operate (w/ climate control system) | LH-IG fuse | - |
| SEAT-A/C FAN fuse | - | |
| Front seat heater switch | ||
| Harness or connector | - | |
| Front seat heater LH does not operate (w/o climate control system) | Front seat heater switch | |
| Seat heater control sub-assembly LH (for front side) | ||
| Front seat cushion heater LH | ||
| Front seatback heater LH | ||
| Harness or connector | - | |
| Front seat heater LH does not operate (w/ climate control system) | SEAT-A/C LH fuse | - |
| Front seat heater switch | ||
| Seat climate control ECU LH | ||
| Front seat cushion heater LH | ||
| Front seatback heater LH | ||
| Harness or connector | - | |
| Front seat heater RH does not operate (w/o climate control system) | Front seat heater switch | |
| Seat heater control sub-assembly RH (for front side) | ||
| Front seat cushion heater RH | ||
| Front seatback heater RH | ||
| Harness or connector | - | |
| Front seat heater RH does not operate (w/ climate control system) | SEAT-A/C RH fuse | - |
| Front seat heater switch | ||
| Seat climate control ECU RH | ||
| Front seat cushion heater RH | ||
| Front seatback heater RH | ||
| Harness or connector | - | |
| Indicator light (LH side) of front seat heater switch blinks (w/ climate control system) | Front seat cushion heater LH | |
| Harness or connector | - | |
| Seat climate control ECU LH | ||
| Indicator light (RH side) of front seat heater switch blinks (w/ climate control system) | Front seat cushion heater RH | |
| Harness or connector | - | |
| Seat climate control ECU RH | ||
| Both rear seat heaters do not operate (w/ rear seat heater system) | ECU-IG No. 2 fuse | - |
| RR S/HTR fuse | - | |
| IG1 NO. 5 relay | - | |
| Rear air conditioning control panel | - | |
| Harness or connector | - | |
| Rear seat heater LH does not operate (w/ rear seat heater system) | Seat heater control sub-assembly LH (for rear side) | - |
| Rear air conditioning control panel | - | |
| Rear seat cushion heater LH (for 60/40 Split Seat Type 40 Side) | ||
| Rear seat cushion heater LH (for 60/40 Split Seat Type 60 Side) | ||
| Rear seatback heater LH (for 60/40 Split Seat Type 40 Side) | ||
| Rear seatback heater LH (for 60/40 Split Seat Type 60 Side) | ||
| Harness or connector | - | |
| Rear seat heater RH does not operate (w/ rear seat heater system) | Seat heater control sub-assembly RH (for rear side) | - |
| Rear air conditioning control panel | - | |
| Rear seat cushion heater RH (for 60/40 Split Seat Type 40 Side) | ||
| Rear seat cushion heater RH (for 60/40 Split Seat Type 60 Side) | ||
| Rear seatback heater RH (for 60/40 Split Seat Type 40 Side) | ||
| Rear seatback heater RH (for 60/40 Split Seat Type 60 Side) | ||
| Harness or connector | - |