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Fuel Injection Timing Control System DESCRIPTION The target fuel injection timing in accordance with the engine speed and the fuel injection amount are recorded Air Conditioning Cut Control DESCRIPTION Input/output signal chart Sensor Input Signal to ECM ECM Function Actuator Air conditioner switch Air conditioner “ON” signal Air conditioner cut Air conditioner relay Accelerator position sensor Accelerator valve opening Vehicle speed sensor Vehicle speed Engine coolant temperature sensor Engine coolant temperature System description This system improves acceleration when the air conditioner is used. Fuel Cut Control (at no load & high engine DESCRIPTION Input/output signal chart Sensor Input Signal to ECM ECM Function Actuator Vehicle speed sensor Vehicle speed Fuel cut control Electronic control fuel injec- Park/Neutral position (PNP) switch Neutral position Accelerator position switch or Accelerator Accelerator position Engine coolant temperature sensor Engine coolant temperature Crankshaft position sensor (TDC) Engine speed If the engine speed is above 2,700 rpm with no load (for example, in neutral and engine speed over 2,700 ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION ZD30DDTi EC-22 |