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)

Or, hide this message: temporarily or permanently

Calibrating Ground Terminals, Continued




Calibrating Ground Terminals, Continued







- Ignition off.
- Connect an ohmmeter between battery negative terminal and terminal A:3 on the 4-pin connector.

The ohmmeter should read approx. 0 [ohm].

Ok - Checking Control Buttons

Not Ok - Checking For an Open-Circuit, Contact Resistance and Oxidation