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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System Specifications

Driver Information Module (DIM) Signal Description

All the values given below are measured between the respective connection in column 1 and connection 14 (signal ground) if not otherwise specified.

NOTE: It is important that the test box is connected and the ground points checked before testing begins.

U = DC voltage (V)
f = frequency in Hertz (Hz)
Ubat = battery voltage (V)
t = period time in milliseconds (ms)
Ulow = Voltage close to 0 V