Ambient Sensor
WARNING: This page is about a different car, the 2002 Subaru Outback and 2002 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
Measure ambient sensor resistance. If no good, replace the ambient sensor. See TESTING AMBIENT SENSOR table.
TESTING AMBIENT SENSOR
| Terminal | Resistance |
| 1 & 2 | 2.2 kohm/77°F (25°C) |