Problem Symptoms Table
HINT:
Use the table below, with suspected areas listed in numerical order, to determine the cause of the problem. Inspect and repair or replace parts as necessary according to the steps on the following pages.
SEAT VENTILATION/HEATING SYSTEM
SYMPTOM CHART
| Symptom | Suspected area | Reference |
|---|---|---|
| Seat heaters do not operate (without seat ventilator). | 1. S-HTR fuse | - |
| 2. Seat heater switch | SEAT HEATER SWITCH | |
| 3. Front seat cushion heater assembly | FRONT SEAT CUSHION HEATER | |
| 4. Front seatback heater assembly | FRONT SEATBACK HEATER | |
| 5. Seat heater circuit | PROBLEM SYMPTOMS TABLE | |
| 6. Seat heater controller | - | |
| Seat heaters do not operate (with seat ventilator). | 1. S-HTR fuse | - |
| 2. Front seat cushion heater assembly | FRONT SEAT CUSHION HEATER | |
| 3. Front seatback heater assembly | FRONT SEATBACK HEATER | |
| 4. Air conditioning amplifier (Seat ventilation/heating switch circuit) (for driver side) | DTC B1463/63 DRIVER SIDE SEAT HEATER TEMPERATURE SENSOR CIRCUIT | |
| 5. Air conditioning amplifier (Seat ventilation/heating switch circuit) (for front passenger side) | DTC B1464/64 FRONT PASSENGER SIDE SEAT HEATER TEMPERATURE SENSOR CIRCUIT | |
| 6. Seat heater controller | - | |
| Temperature of seat heater cannot be adjusted (without seat ventilator). | Seat heater switch | SEAT HEATER SWITCH |
| Temperature of seat heater cannot be adjusted (with seat ventilator). | 1. Seat ventilator/heater switch (Heater control housing sub-assembly) (for driver side) | DTC B1463/63 DRIVER SIDE SEAT HEATER TEMPERATURE SENSOR CIRCUIT |
| 2. Seat ventilator/heater switch (Heater control housing sub-assembly) (for front passenger side) | DTC B1464/64 FRONT PASSENGER SIDE SEAT HEATER TEMPERATURE SENSOR CIRCUIT | |
| 3. Wire harness or connector | - | |
| Seat ventilators do not operate. | 1. S-HTR fuse | - |
| 2. Seat ventilator circuit | PROBLEM SYMPTOMS TABLE | |
| 3. Air conditioning amplifier (Seat ventilation/heating switch circuit) | SEAT BLOWER CONTROL CIRCUIT | |
| 4. Seat ventilator | - | |
| Intensity of seat ventilator cannot be adjusted. | 1. Seat ventilator/heater switch (Heater control housing sub-assembly) | SEAT BLOWER CONTROL CIRCUIT |
| 2. Wire harness or connector | - |