Sunlight Sensor Test

Remove the sunlight sensor (A) from the dashboard.
With automatic lighting sensor

Fig 1: Identifying Sunlight Sensor (With Automatic Lighting Sensor)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Without automatic lighting sensor

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