Sunlight Sensor Test

NOTE: Before testing the sensor, check for climate control DTCs (see HOW TO USE THE SELF-DIAGNOSTIC FUNCTION WITH THE HDS ).

Remove the sunlight sensor (see SUNLIGHT SENSOR REPLACEMENT ).
With automatic lighting

Fig 1: Identifying Sunlight Sensor Connector Terminals - With Automatic Lighting
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Without automatic lighting

Fig 2: Identifying Sunlight Sensor Connector Terminals - Without Automatic Lighting
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch to ON (II). Measure the voltage between the terminals with the (+) probe on terminal No. 4 (with automatic lighting) or No. 1 (without automatic lighting) and the (-) probe on 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:
- 3.56 V with no sunlight or sensor covered up.
- Less than 3.56 V with sunlight on sensor (depending on sunlight intensity).
If the voltage is not as specified, replace the sunlight sensor (see SUNLIGHT SENSOR REPLACEMENT ).