SOLAR VENTILATION SYSTEM PROBLEM SYMPTOMS TABLE
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.
-
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | See page |
|---|---|---|
| The solar ventilation system does not turn on. | System operation requirements | |
| Solar ventilation ECU power source circuit | ||
| Solar ventilation switch circuit | ||
| IG signal circuit | ||
| Blower motor circuit | ||
| Solar ventilation ECU | ||
| Solar ventilation system does not turn off | Solar ventilation switch circuit | |
| Blower motor circuit | ||
| Solar ventilation ECU | ||
| Inlets do not change to fresh air mode. | Air conditioning system | |
| Solar ventilation switch circuit | ||
| A/C amplifier | ||
| Outlets do not change to face mode. | Air conditioning system | |
| Solar ventilation switch circuit | ||
| A/C amplifier | ||
| Blower motor operates but stops after a short while. | System operation requirements | |
| Solar ventilation ECU power source circuit | ||
| Blower motor circuit | ||
| Use simulation method to check | ||
| The blower motor operates by itself or the motor speed changes arbitrarily. | IG signal circuit | |
| Solar ventilation ECU | ||
| Cabin is smelly or damp. | System operation requirements |