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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Testing Values Chart

Typical Voltage Values:





NOTES
^ Do not connect the positive lead of the EDIS diagnostic cable or VR sensor tee until directed to do so.
^ The SAW and IDM detectors in the EDIS diagnostic cable will not work unless the positive and negative leads of the EDIS diagnostic cable are connected.
^ The vehicle battery voltage must be at least 12 VDC.
^ Be careful not to bring a fluorescent trouble lamp close to the vehicle wiring. If the key is ON and the VR sensor is disconnected, the EDIS module may fire the coil.
^ When using a DVOM to measure voltage readings, connect the positive lead to the jack identified with A (+) sign and the negative lead to the jack with A (-) sign.