Description - Suzuki DF70A Service Manual

1A-4 Engine General Information and Diagnosis:
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
Total operating hour indication system control.
Oil changing reminder system control
Start-in-gear protection system control
Starter motor relay control system
Power trim and tilt relay control system
NOTE
Information related to the Caution System, Self-Diagnostic System, and Total Operating Hours System
is retained in the ECM memory.
• Controls fuel injection amount and timing.
• Controls ignition timing.
• Controls idling / trolling speed by adjusting the intake air volume
through the IAC valve.
• Controls the high pressure fuel pump drive.
• Informs the operator of abnormal engine conditions.
• Controls engine speed, if activated.
• Informs the operator of sensor / switch malfunction.
• Allows engine operation with a back-up system during sensor /
switch malfunction.
• Informs the operator of the total operating time.
• Informs the operator that it is time to replace the engine oil,
based on the maintenance schedule.
• Prevents engine starting when the shift lever is positioned in
forward or reverse.
• Prevents starter motor operation when the engine is already
operating.
• Controls On / Off for the PTT relay's up and down circuits.
1
1. ECM

Description

I9J011110042-01
Z9J0111101002