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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Injector Circuit

CIRCUIT DESCRIPTION
The injectors provide fuel to the intake manifold. They inject fuel into the cylinders based on the signals from the engine control module.

INSPECTION USING OSCILLOSCOPE
- INJECTOR SIGNAL WAVEFORM:
With the engine idling measure waveform between terminals #10 ~ #40 and EO1 of engine control module.

HINT: The correct waveform appears as shown in the images above.

DIAGNOSTIC CHART

WIRING DIAGRAM

INSPECTION PROCEDURE