Quest Minivan XE V6-2960cc 3.0L SOHC MFI (VG30E) (1998)
Solar Sensor: Description and Operation
The sunload sensor is located on the left defroster grille. It detects sunload entering through the windshield by means of a photo diode. The sensor then
converts it into a current value which is then input to the EATC unit.
Measure resistance between sensor terminals (1) and (2), the resistance should be greater than 0 ohms depending on the amount of sunlight.
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When checking sunload sensor, place it in direct sunlight.