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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Fuel Pump Signal: Testing and Inspection




INSPECTION
1. Turn the ignition switch to START and verify that an injector operating sound is heard while the engine is cranking.
2. Depress the accelerator pedal fully and turn the ignition switch to START. Verify that no operating sound is heard while cranking engine.
3. If an operating sound is heard, check the PCM terminal 89.