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 | A/C fuse | - |
| A/C COMP fuse | - | |
| Refreshing seat switch | ||
| Harness or connector | - | |
| Front seat heater LH does not operate | Proceed to "Seat Heater for Front Left Seat does not Operate" | |
| Front seat heater RH does not operate | Proceed to "Seat Heater for Front Right Seat does not Operate" | |
| Indicator light (LH side) of front seat heater switch blinks | Front seat cushion heater LH | |
| Harness or connector | - | |
| Air conditioning amplifier assembly | ||
| Indicator light (RH side) of front seat heater switch blinks | Front seat cushion heater RH | |
| Harness or connector | - | |
| Air conditioning amplifier assembly | ||
| Both rear seat heaters do not operate | ECU-IG NO. 2 fuse | - |
| RR S/HTR fuse | - | |
| IG1 NO. 1relay | - | |
| Rear air conditioning control panel | - | |
| Harness or connector | - | |
| Rear seat heater LH does not operate | Seat heater control sub-assembly LH (for rear side) | - |
| Rear air conditioning control panel | - | |
| Rear seat cushion heater LH | ||
| Rear seatback heater LH | ||
| Harness or connector | - | |
| Rear seat heater RH does not operate | Seat heater control sub-assembly RH (for rear side) | - |
| Rear air conditioning control panel | - | |
| Rear seat cushion heater RH | ||
| Rear seatback heater RH | ||
| Harness or connector | - |