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
(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)
Or, hide this message:
temporarily or
permanently
Solar Sensor: Testing and Inspection
PHOTO SENSOR CHECK 1.
Connect scan tool MB991958, and check the data list of the photo sensor.
Reading Diagnostic Trouble Codes 2.
Check that the displayed value changes when you cover the photo sensor with your hands.