Ecu Control - TOHATSU TLDI 40 Service Manual

3. ECU Control

With TLDI, a network of connected sensors enables the Engine Control Unit (ECU) to precisely
regulates fuel mixture injection rate and ignition timing. The ECU also uses a stratified fuel feed process
to provide lean combustion in the low-speed range, while utilizing more homogenized change to ensure
the fuel mixture is distributed uniformly throughout the combustion chamber when operating in the high-
speed range to ensure maximum combustion efficiency.
L-CDI charge coil
Throttle-position sensor
(TPS)
Crank-position sensor
(CPS)
Water-temperature sensor
(WTS)
Oil level sensor
Battery
Key switch
Stop switch
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Engine Control Unit
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1-7
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(ECU)
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#1, #2 & #3
Fuel injectors
#1, #2 & #3
Air injectors
#1, #2 & #3
Ignition coils
Tachometer
Warning indicators
Warning horn
Fuel-feed pump
(FFP)