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)
Or, hide this message:
temporarily or
permanently
Fuel Pump Electrical Circuit
When the
ignition switch is in the ON position before engaging the starter, the
PCM energizes the
fuel pump relay for
2 seconds, causing the
fuel pump to pressurize the fuel system. If the PCM does not receive the ignition, reference pulses with the engine cranking or running within
2 seconds, the PCM shuts OFF the fuel pump relay, causing the fuel pump to stop.