The fault diagnosis circuit of Daewoo ESPERO fuel system

Published:2011/5/18 4:35:00 Author:Borg | Keyword: diagnosis circuit, fuel system | From:SeekIC

When the switch is on, start the engine and it begins to run, then ECM will receive the reference pulse from HEI electricity distributor,If there is no reference pulse, ECM will shut down the oil pump in 2 seconds after the igniting switch is on. The fuel pump will give the throttle injector a pressure of 62~9OkPa(9~13psi), and the spare oil will go back to the oil box.The fuel pump test pin is on the left side of the engine cylinder, and when the engine is stalling, it will impose a battery voltage on the pin so that the pump will work temporarily.



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