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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Inspecting Harness or Connectors









If the inspection for a particular code requires the test harness, remove the seat back panels. Unbolt the ECM. Connect the test harness. Then check the system according to the procedure described for the appropriate code(so) listed on the following pages.




CAUTION: Puncturing the insulation on a wire can cause poor or intermittent electrical connections.





For testing at connectors other than the test harness, bring the tester probe into contact with the terminal from the connector side of wire harness connectors in the engine compartment. For female connectors, just touch lightly with the tester probe and do not insert the probe.