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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WARNING: When driving or riding in airbag equipped vehicles, never hold test equipment in your hands or lap when the vehicle is in motion. Objects between you and the airbag can increase the risk of injury in an accident.

Test Table:





Test Table:





Notes for ATF temperature:
- A detected temperature of minus 50 C indicates a short circuit to Ground
- A detected temperature of 180 C indicates a short circuit to positive or an open circuit.

Test Table:





Test Table:





Note for Multi-Function TR Switch -F125-:
- The input signals of the Multi-Function TR Switch -F125- can be tested at the transmission control module.





Test Table:





Note for Engine intervention:
- Engine intervention is activated only during a gearshift. Engine intervention may be active only for a very short time depending on the driving situation, i.e. the relatively slow data transfer to VAG 1551 may in certain circumstances, ignore this brief engine intervention.

1) When driving, a 2nd technician is required for reading the specifications, - SEE WARNING.