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

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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High Beam Input - Range 0 - 16 V

The Body Function Controller (BFC) uses this input in determining the state of the high beam Headlamps. A single wire input which monitors the high beam lamp voltage. On a known good car, with High Beams off, the scan tool displayed value should be battery system voltage. Refer to Battery Voltage. Battery Voltage - Range 0 - 25.5 V

On a known good car, with High Beams On, the scan tool display value should be 0% (0 volts) to 16% of battery system voltage.