DTC B1421/21 Solar Sensor Circuit (Passenger Side): Description
WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
The solar sensor, which is installed on the upper side of the instrument panel, detects sunlight and controls the air conditioning AUTO mode. The output voltage from the solar sensor varies in accordance with the amount of sunlight. When the sunlight increases, the output voltage increases. As the sunlight decreases, the output voltage decreases.
The air conditioning amplifier detects changes in the output voltage from the solar sensor.
DTC DETECTION CONDITION AND TROUBLE AREA
| DTC No. | DTC Detection Conditions | Trouble Areas |
|---|---|---|
| B1421/21 | Open or short in passenger side solar sensor circuit |
|