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. Start and operate engine at idle speed until normal operating temperature is obtained.
3. Connect a suitable voltmeter onto check connector terminal LgR.
4. Voltmeter reading obtained should be 12 volts.
5. Connect a suitable tachometer onto engine as per manufacturer's instructions.
6. Increase engine speed to above 2,000 rpm and decelerate slowly. Engine speeds and voltage readings should be as follows:
a. With an engine speed at idle voltmeter reading should be 12 volts.
b. With engine speed above 1,000-1,200 RPM,, voltmeter reading obtained should be 1.5 volts or less.
c. If readings do not agree with the specifications turn the adjusting screw.