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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Component Tests and General Diagnostics


Underbody Inspection

1.Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .

2.Inspect the underbody for obvious floor pan deterioration.

3.Inspect for loose dirt and rust around the inside of the floor pan reinforcement member access holes.

Loose dirt and rust inside of the floor pan reinforcement member access holes is the first indication of possible corrosion in hidden areas.

4.Make any repairs before the final cleaning and performing protective treatments.