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SYSTEM EC-65 < SYSTEM DESCRIPTION > [MR FOR NISMO RS MODELS] C D E F G H I J K L M A EC N P O COOLING FAN CONTROL : System Description INFOID:0000000012197685 INPUT/OUTPUT SIGNAL CHART *: The ECM determines the start signal status by the signals of engine speed and battery voltage. SYSTEM DESCRIPTION ECM controls cooling fan speed corresponding to vehicle speed, engine coolant temperature, A/C ON signal and refrigerant pressure. Cooling fan control signal is sent to IPDM E/R from ECM by CAN communication line. Then, IPDM E/R sends ON/OFF pulse duty signal to cooling fan control module. Corresponding to this ON/OFF pulse duty signal, cooling fan control module gives cooling fan motor operating voltage to cooling fan motors. Cooling fan speed is controlled by duty cycle of cooling fan motor operating voltage sent from cooling fan control module. STARTER MOTOR DRIVE CONTROL INFOID:0000000012197686 STARTER MOTOR DRIVE CONTROL : System Description INFOID:0000000012197687 INPUT/OUTPUT SIGNAL CHART Sensor Input signal to ECM ECM function Actuator Crankshaft position sensor (POS) Engine speed * Cooling fan IPDM E/R Camshaft position sensor (PHASE) Engine coolant temperature sensor Engine coolant temperature Refrigerant pressure sensor Refrigerant pressure Battery Battery voltage * Combination meter CAN commu- Vehicle speed signal BCM CAN commu- A/C ON signal A/C evaporator temper- Target A/C evaporator Blower fan ON signal* JSBIA5976GB |