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 logical successor to CHARM, I recommend you try it!

Link: lemon-manuals.la

ECM Power Supply

Power Supply Components:

Relay Positions:

Power for the Motronic Engine Management system is supplied via fuse S18 and three relays:

- Fuel Pump Relay (Position 12)
- [1][2]Power Supply Relay (Position 3)
- Oxygen Sensor Relay (above Central Electrical Panel)