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I At high engine speeds. I When the engine coolant temperature becomes excessively high. I When operating power steering during low engine speed or low vehicle speed. I When engine speed is excessively low. Fuel Cut Control (at no load & high engine DESCRIPTION NCEC0017 Input/Output Signal Chart NCEC0017S01 Sensor Input Signal to ECM ECM func- tion Actuator Vehicle speed sensor or ABS actuator and Vehicle speed Fuel cut Injectors PNP switch Neutral position Throttle position sensor Throttle position Engine coolant temperature sensor Engine coolant temperature Camshaft position sensor Engine speed If the engine speed is above 3,950 rpm with no load, (for example, in Neutral and engine speed over 4,000 Evaporative Emission System DESCRIPTION NCEC0018 The evaporative emission system is used to reduce hydrocarbons emitted into the atmosphere from the fuel Intake manifold Throttle body Purge line EVAP canister Relief of vacuum Sealing gas cap with Fuel tank Air Fuel vapor EVAP SEF916W ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION SR20DE Air Conditioning Cut Control (Cont’d) EC-27 |