Ecm Input And Sensor Diagram - Mercury MerCruiser D2.8L D-Tronic Service Manual

SERVICE MANUAL NUMBER 22

ECM Input and Sensor Diagram

The following shows the sensors, switches, other inputs and outputs used by the ECM to
control its various systems. Although we will not cover them all in great detail, there will be
a brief description of each.
Sensors
Number 1 Cylinder
Fuel Injector (Needle-
motion sensor)
Temperature sensors
(water, air, fuel)
Sensor for control-
collar position
Engine speed sensor
MAP sensor
Setpoint
generators
TP sensor
90-860074--1 FEBRUARY 2002
ECM
Micro-
processors
Maps
Actuators
Injected fuel Injected fuel
quantity
Electronically
Engine
shut off
Quantity and
Start of
injection
Starting
control
EDI DIAGNOSIS
controlled
fuel injection fuel injection
pump (Fuel
Timing)
Glow control
unit
Diagno-
sis
Diagnostic
display
Page 5E-15