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 Tank Pressure Sensor: Description and Operation
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Monitors the fuel tank pressure during engine operation and continuously transmits an input signal to the PCM.
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Monitors the fuel tank pressure or vacuum bleed-up during the EVAP monitor testing.
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Controls excessive fuel tank pressure by forcing the system to purge.