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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Idle Validation Switch





Idle Validation Switch
The ECT Switch portion verities when the accelerator pedal is in the idle position. This switch protects against in-range failure of the ETC sensor.

A PCM detected fault of the ETC Switch will illuminate the Malfunction Indicator Lamp. An inoperative ETC Switch detected by the PCM will only allow the engine to run at idle.