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

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Throttle Full Close Switch: Testing and Inspection


1. Disconnect electrical connector from idle switch.
2. Start and run engine at idle and check for continuity between connector terminals. There should be continuity between upper and lower right terminals and no continuity between upper and lower left terminals.
3. Accelerate engine to 950-1050 RPM. There should now be continuity between upper and lower left terminals and no continuity between upper and lower right terminals.