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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Principal Components

Trionic Components:





The SF1 system is an integrated engine system which controls the ignition and fuel injection systems and also regulates the turbo boost pressure from a common engine control module.

The system consists of the following main components:


^ Engine control module (ECM)

^ Ignition discharge module (1DM)

^ Manifold absolute pressure (MAP) sensor

^ Injectors

^ Crankshaft position sensor

^ Intake air temperature sensor


The 70-pin ECM, located in the bulkhead partition space on the left-hand side, has two ventilation holes at the bottom. To reduce radio interference, the casing is grounded to the car body by means of a separate braided ground strap.