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MFS 25
Сервис Мануал Страница: 83

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Tohatsu
MFS 25
Сервис Мануал Страница: 83

Tohatsu MFS 25 [83/319] Ecu system

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Fuel System (Fuel Injection)

1 Special Tools……………………………… 4-2

2 Piping Arrangement Diagram …… 4-3

Fuel Hose, Vent Hose, Breather Hose, Cooling Water Hose

… 4-3

3 Parts Layout ……………………………… 4-4

Fuel Pump, Fuel Rail, Vapor Separator ……… 4-4

Intake Manifold ………………………………… 4-7

Magneto & ECU ………………………………… 4-8

Electric Parts …………………………………… 4-9

Separate Fuel Tank …………………………… 4-11

4 ECU System ……………………………… 4-12

(1) Configuration of ECU System…… 4-12

1) Sensors ……………………………………… 4-13

2) Actuators …………………………………… 4-15

3) Control System (ECU) ……………………… 4-16

(2) Control System ……………………… 4-16

(3) Fuel Injection Control……………… 4-17

1) Fuel Injection Timing ……………………… 4-17

2) Starting Fuel Increase Correction ………… 4-18

3) Acceleration Fuel Increase Correction …… 4-18

4) Deceleration Fuel Decrease Correction … 4-18

Correction Based On Intake Air Temperature

… 4-18

Correction Based On Cylinder Cooling Water Temperature

…… 4-18

(4)

Control of Fuel Feed Pump (FFP) ……

4-18

(5) Control of Tachometer …………… 4-18

(6)

Warning Buzzer and Lamp (LED), and

Control of Engine Revolution Speed

… 4-19

Locations of warning buzzer and lamp (LED)

… 4-19

Warning notification, abnormality and action to be taken

… 4-19

5 Ignition System ……………………… 4-20

(1)

Configuration of Ignition System

… 4-20

(2) Ignition Control…………………… 4-21

1) Ignition Timing Controls………………… 4-21

2) Ignition and Combustion Orders ……… 4-21

3) Ignition Timing…………………………… 4-21

4) Operations ……………………………… 4-21

(3) Fuel Feed System ……………… 4-22

Components of Fuel Feed System

… 4-23

Fuel Pump (Low Pressure Mechanical Pump)

… 4-23

2) Vapor Separator ………………………… 4-23

3) Fuel Regulator ………………………… 4-24

4) Fuel Cooler ……………………………… 4-24

Outline of Fuel Injection System

…… 4-25

1) Air Intake System ……………………… 4-25

8Inspection Items …………………… 4-26

Inspection of Fuel Supply System Piping

… 4-26

2) Inspection of Filter ……………………… 4-26

3) Inspection of Fuel Pump ……………… 4-28

4) Inspection of Fuel Connector ………… 4-28

5) Measuring fuel pressure ……………… 4-29

6) Inspection of Fuel Regulator…………… 4-30

7) Draining Fuel …………………………… 4-31

8) Disassembly of Vapor Separator ……… 4-31

9) Inspection of Vapor Separator ………… 4-32

10) Reassembly of Vapor Separator ……… 4-33

11)

Inspection of ISC (Idle Speed Control)

…… 4-33

12) Inspection of Idle Speed ……………… 4-33

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Tohatsu MFS 25 [83/319] Ecu system

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