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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Controller Test











Controller Test
1. Remove the instrument panel from the dashboard
2. Measure resistance between the A and C terminals.
Resistance: 8,000-12,000 ohms

NOTE: Resistance will vary slightly with temperature.

3. Measure resistance between the B and C terminals while rotating the adjusting dial.
Resistance should vary from 0 to 10,000 ohms as the dial is rotated.