Sunlight Sensor Test

WARNING: This page is about a different car, the 2011 Acura TL, 2010 Acura TL, and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Before testing the sensor, check for HVAC DTCs (see GENERAL TROUBLESHOOTING INFORMATION )

Remove the sunlight sensor (A) (see Sunlight Sensor Replacement )

Fig 1: Identifying Sunlight Sensor
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch to ON (II) Measure the voltage between terminals with the (+) probe on terminal No 2 and the (-) probe on terminal No 1 with the connector connected
NOTE: The voltage readings do 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
If the voltage is not as specified, replace the sunlight sensor (see Sunlight Sensor Replacement )