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

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Schematic Circuit Diagram, Bus Diagnosis



Schematic Circuit Diagram, Bus Diagnosis

The following block diagram provides an overview of the control units and bus systems deployed in the vehicle.







- JBE (Junction Box Electronics)
- Control unit with connection to K-CAN, PT-CAN and diagnosis lead

- MOST GW is a placeholder for e.g. CCC (Car Communication Computer), M-ASK (Multi Audio System Controller), RAD (radio) or CHAMP (Central Head Unit and Multimedia Platform)
- Control unit with connection to K-CAN and MOST

- DSC (Dynamic Stability Control)
- Control unit with connection to F-CAN and PT-CAN

- K1 ... Kn: control units on the K-CAN
- M1 ... Mn: Control units on the MOST
- F1 ... Fn: Control units on the F-CAN
- PT1 ... PTn: Control units on the PT-CAN