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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Fuel Injector




Fuel injectors, checking


Checking Resistances of Fuel Injectors







- Test resistance of fuel injectors between terminals.

Specification: 13.5 - 15.5 Ohms


NOTE: Resistance value is valid at approx. 20 °C. At higher temperatures, the value will rise approx. 4 - 6 Ohms.


If specified value is not obtained:
- Replace faulty fuel injector.