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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Test and Measuring Instruments During Test Drive







Test and Measuring Instruments during Test Drive

If testing equipment must be used during a road test, observe the following:

Distraction and testing equipment that is not secured properly can cause accidents.

The passenger airbag could pose a risk if it deploys in a collision.

Operating testing equipment while driving causes it to shift position.

There is an increased risk of injury due to unsecured testing equipment.

Always secure testers on the rear seat with a strap and have a second person on the rear seat operate them.