0583048 EVINRUDE TIMER BASE & SENSOR ASSY.

Illustration 1 g03647676
(1) Low -pressure fuel pressure sensor (2) Engine speed sensor (3) Oil filter clogging switch (4) ECM (5) Engine control panel - left-hand mounted (if equipped) (6) Coolant temp sensor (7) Service connector (8) 70 pin customer connector (9) Coolant level switch (if equipped)
Illustration 2 g03647732
The belt guard and aftercooler have been removed for illustrative purposes. (5) Engine control panel - right-hand mounted (if equipped) (10) ECM Controlled Belt Driven Supercharger Clutch (11) Supercharger speed sensor (12) Alternator (13) Starter relay (14) Alternator relay (15) Intake heater relay (16) Oil temperature and pressure sensor (17) Intake heater (18) Fuel regulator
Illustration 3 g03659723
(19) Crankcase pressure sensor (20) Air inlet manifold temperature and pressure sensor (21) Camshaft timing sensor (22) fuel filter clogging switch (23) Fuel temperature sensor (24) Inlet air temperature and pressure sensor
Illustration 4 g03704396
Left-hand side view of the engine (A) Marine Engine Control Panel (MECP) harness connector 1 (B) Exhaust temperature sensor connector (if equipped) (C) Transmission oil temperature connector (if equipped) (D) Transmission oil pressure connector (if equipped) (E) Sea water pressure sensor connector (if equipped)
Illustration 5 g03704651
Front view of the engine (F) Multi-Station Control System (MSCS) Troll Mode connector (G) ECM Controlled Belt Driven Supercharger Clutch Connector (H) Priming pump relay connector (I) Water in fuel sensor connector
Illustration 6 g03653681
(25) ECM P1 connector (26) ECM P2 connector
Illustration 7 g03707599
Typical example of the Primary fuel filter and water separator and the electric priming pump (27) Electric priming pump relay - remote mounted (28) Electric primping pump - remote mounted
Illustration 8 g03653704
(7) Service connector (8) 70 pin customer connectorThe electronic control system is integrally designed into the engine fuel system and the air inlet and exhaust system in order to electronically control the fuel delivery and the injection timing. The electronic control system provides increased timing control and fuel air ratio control in comparison to conventional mechanical engines. Injection timing is achieved by precisely controlling the injector firing time. Engine rpm is controlled by adjusting the injection duration. The Electronic Control Module (ECM) energizes the unit injector solenoids in order to start the injection of fuel. Also, the ECM de-energizes the unit injector solenoids in order to stop the injection of fuel. The personality module is used by the ECM to store all the rated information for a particular application. The personality module cannot be replaced physically. The personality module must be flashed programmed with a PC. Refer to Systems Operation/Testing And Adjusting, "Fuel System" for a complete explanation of the fuel injection process.The engine uses the following three types of electronic components:
Input component
Control component
Output componentAn input component is one that sends an electrical signal to the ECM of the system. The signal that is sent varies in either of the following ways:
Voltage
Frequency
Pulse widthThe variation of the signal is in response to a change in some specific system of the marine engines. Some specific examples of an input component are the engine speed-timing sensors, the coolant temperature sensor, and the engine oil pressure sensor. The ECM interprets the signal from the input component as information about the condition, environment, or operation of the engine.A control component (ECM) receives the input signals from the input components. Electronic circuits inside the control component evaluate the signals from the input components. These electronic circuits also supply electrical energy to the output components of the system. The electrical energy that is supplied to the output components is based on predetermined combinations of input signal values.An output component is one that is operated by a control module. The output component receives electrical energy from the control group. The output component uses that electrical energy in one of two ways. The output component can use that electrical energy in order to perform work. The output component can use that electrical energy in order to provide information.As an example, a moving solenoid plunger will perform work. By performing work, the component has functioned in order to regulate the engine.As an example, an instrument panel light or an alarm will provide engine information to the operator.These electronic components provide the ability to electronically control the engine operation. Engines with electronic controls offer the following advantages:
Improvement in performance
Improvement in fuel consumption
Reduction in emissions levels