Components For System Control; Engine Control Module (Ecm) - Suzuki DF 40 Service Manual

COMPONENTS FOR SYSTEM CONTROL

ENGINE CONTROL MODULE (ECM)

The ECM sends signals to control the actuators based on the information inputs from each sensor / switch.
Major controls are as follows:
NAME OF CONTROL
Fuel injection control
Ignition control
Idle air control
Fuel pump control
Caution system control
Self-diagnostic system
control
Fail-safe system control
Operating hour indication
system control
Start-in-gear
protection system control
O feedback system
2
control
NOTE:
The information related to the Caution system, Self-Diagnostic System, Operating hour indication system
and O feedback system are retained in ECM memory.
2
• Controls fuel injection amount and timing.
• Controls ignition timing.
• Controls idling/trolling speed by adjusting intake air amount through IAC
valve.
• Controls high pressure fuel pump drive.
• Informs operator of abnormal engine condition.
• Controls engine speed.
• Informs operator of sensor / switch malfunction.
• Allows operation during sensor/ switch malfunction.
• Informs operator of total operating time in units of 50 hours.
• Prevents engine start when shift is positioned in forward or reverse.
• Controls and performs O
ENGINE CONTROL SYSTEM
DESCRIPTION
feedback operation using optional O
2
3-4
sensor.
2