Ecu System - TOHATSU MFS25 Service Manual

Fuel System (Fuel Injection)

4. ECU System

(1) Configuration of ECU System
ECU uses various sensors to precisely control injected fuel amount and ignition timing.
Spark Plugs
Fuel Tank
Alternator
Exciter Coils
Alternator
ECU Charge Coil
Pulser Coils
MAP ( Manifold Pressure )
Sensor
Water Temperature Sensor
Throttle Position
Sensor
MAT (Manifold Temperature)
Sensor
Oil Pressure Switch
Stop Watch
4-12
Fuel Regulator
Fuel Feed Pump
(FFP)
IG-COIL
Ignition Coil
Fuel Injector
MAT (Manifold Temperature)
Sensor
Throttle Position
Sensor
MAP ( Manifold Pressure ) Sensor
Water Temperature Sensor
ECU
(Electronic
Control Unit)
ECU
Controls fuel feed pump (FFP).
Drives injectors.
Drives ignition coils.
Regulator
Exciter Coils
Pulser Coil #1
ECU Charge Coil
Charge Coil
Pulser Coil #2
Fuel
Control
Idle
Air Control
Ignition
Timing
Control
Display
Control
Rectifier
Battery
Accessories
Fuel Feed Pump
(FFP)
Fuel Injector
ISC (Idle Speed
Control) Valve
Ignition Coil
Warning Buzzer
Lamp (LED)
Tachometer
25/30 2006