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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Electronic Brake Control Relay Test

RELAY TEST
This test allows monitoring the voltage available to the EBCM while turning the Electronic Brake Control Relay ON and OFF.

When the relay is commanded ON, the voltage should be equal to battery voltage. When the relay is OFF, the voltage should drop below five volts.

IMPORTANT: Voltage will not drop to zero when the relay contacts are open due to capacitors in the EBCM. If voltage drops below five volts, the relay is operating properly.