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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SAE Standards

SAE STANDARDS
^ Following is a comparison of the previous standard and the new standard.











#1 Diagnostic trouble codes depend on the diagnostic test mode
#2 Controlled by the PCM
#3 In some models, there is a fuel pump relay that controls pump speed. That relay is now called the fuel pump relay (speed).
#4 Device that controls engine and powertrain
#5 Directly connected to exhaust manifold
#6 Part name of diesel engine