Sunlight Sensor Test

Sunlight Sensor Test

NOTE:

- When prying with a flat-tip screwdriver, wrap it with protective tape to prevent damage.

- Before testing the sensor, check for HVAC DTCs. Initial Inspection and Diagnostic Overview

1. Remove the sunlight sensor (A). Service and Repair

2. Turn the ignition switch to ON (II). Measure the voltage between the terminals with the (+) probe on terminal No. 4 (with automatic lighting sensor) or terminal No. 1 (without automatic lighting sensor) and the (-) probe on the terminal No. 2 with the connector connected.
NOTE: The voltage readings will not change under the light of a flashlight or a fluorescent lamp. Voltage should be:

- 3.6-3.7 V or more with the sensor out of direct sunlight.

- 3.3-3.5 V or less with the sensor in direct sunlight.

3. If the voltage is not as specified, replace the sunlight sensor. Service and Repair

With automatic lighting sensor





Without automatic lighting sensor