Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Ambient Light Sensor: Testing and Inspection

Light Control Sensor

INSPECTION

Unit inspection

Preparation tool: Circuit tester

1. Turn the ignition switch to ON.
2. Set the lighting switch to AUTO position.
3. Check the voltage between the sensor terminals.






4. Replace the sensor - automatic light if the inspection result is not within the standard value.