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

Input Signals




Input signals of the PCm can be read in with this menu item. This allows the function of the input signals to be assessed very quickly.

The following input signals can be read in:
- Signal, terminal 86 s
- Signal, terminal 15
- Signal, terminal 58 d
- Signal, DSP on
- Signal, terminal 15 Navi
- Signal, terminal 15 Tel
- Signal, TV on
- Signal, hook-on/off*
- CC button
- CD button
- Fm button
- Am button
- Station button 1
- Station button 2
- Station button 3
- Station button 4
- Station button 5
- Station button 6
- Search left button
- Search right button
- Pressure contact, left dial
- main button
- Audio button
- Tel button**
- Navi button**
- BC button
- AC button
- Pressure contact, right dial
- map button
- Dark button
- Repeat button
- Handset/Info button
- Eject button
- 1-2 direction change

* Telephone handset contact
** Only Navi button on USA vehicles