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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Control Module HVAC: Testing and Inspection

Terminals Of Control Module/Pinouts Part 1:

Terminals Of Control Module/Pinouts Part 2:

Terminals Of Control Module/Pinouts Part 3:

Terminals Of Control Module/Pinouts - Oscilloscope Waveform:

Terminals Of Control Module/Pinouts - Oscilloscope Waveform:

Terminals Of Control Module/Pinouts - Accessory Meter:

Terminals Of Control Module/Pinouts - Heater Control Switch(W/Lexus Navigation System):

Terminals Of ECM/Pinouts:

Terminals Of ECM/Pinouts - Network Gateway ECU:

Terminals Of ECM/Pinouts - Cooler Control Panel:

Terminals Of ECM/Pinouts - Body ECU: