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)

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Scan Tool Data Definitions



Scan Tool Data Definitions

Compressor Relay Command

Indicates when the compressor relay is activated.

Controller Battery Volts

Range 10.0-16.0 volts. This data refers to the battery system voltage as measured by the suspension control module.

Exhaust Valve Command

Indicates when the exhaust valve is active.

Position Sensors

Range 0.5-4.85 volts. This data refers to vehicle height measured in volts.

Vehicle speed

Indicates speed of vehicle.