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)

Or, hide this message: temporarily or permanently

Safety Connect System





CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: TERMINALS OF ECU

1. CHECK DCM (TELEMATICS TRANSCEIVER)













* *1: w/ Navigation System (for HDD)

* *2: w/o Navigation System

(a) Oscilloscope waveform:





(1) Waveform 1





2. CHECK DISPLAY AND NAVIGATION MODULE DISPLAY (NAVIGATION ECU) (w/ Navigation System (for HDD)) Navigation System (For HDD)

3. CHECK STEREO COMPONENT AMPLIFIER ASSEMBLY (w/ Navigation System (for HDD)) Audio and Visual System (w/ Navigation System)

4. CHECK STEREO COMPONENT AMPLIFIER ASSEMBLY (w/o Navigation System) Audio And Visual System (w/o Navigation System)