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 Pump Control System




Fuel Pump Control Inspection
1. Crank the engine and check for the fuel pump relay operation sound.
2. If no operation sound is heard, check the fuel pump relay.
3. If the fuel pump relay is normal, check the following.
^ PCM terminal voltage
Fuel pump control signal
Start signal
^ Main relay operation inspection
^ Wiring harness and connector between main relay and fuel pump relay.