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

Scan Tool Testing and Procedures

DATA LIST / ACTIVE TEST

1. CHECK DATA LIST WITH INTELLIGENT TESTER

HINT: According to the DATA LIST displayed by the intelligent tester, you can read the value of the switch, sensor, actuator, etc. without parts removal. Reading the DATA LIST as the first step of troubleshooting is one way to shorten labor time.





2. CHECK ACTIVE TEST WITH INTELLIGENT TESTER

HINT: Performing the ACTIVE TEST using the intelligent tester allows you to operate the relay, VSV, actuator, etc. without parts removal. Performing the ACTIVE TEST as the first step of trouble shooting is one way to shorten labor time. It is possible to display the DATA LIST during the ACTIVE TEST.