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

Road Test Procedure Worksheet

NOTE: Use the Worksheet for Road Test Procedure to list the typical values from the Diagnostic Reference Values at the end of this pinpoint test. The typical values can be compared to the actual values obtained during the road test procedure.

Intermittent Test Prioritization Chart

NOTE: Use the chart to choose which intermittent test to perform for the circuit or component. If the vehicle is a no-start, the ignition test should be run first.