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Electronic control system

Engine speed control In engine speed control, the engine ECM decreases the engine speed to protect the engine from damage.

0

Pulser coil

1

Air pressure sensor Cam position sensor (PORT EX)

2

Fuel injector

Cam position sensor (PORT IN) Cam position sensor (STBD IN)

3

Ignition coil

TPS Engine ECM

4

LPS ETV motor

5

SPS Engine temperature sensor

Digital Electronic Control ECM

6

Oil pressure sensor

Thermoswitch Engine shut-off switch

Command Link Plus Multifunction Color Gauge

7 8

Overheat control Criteria The thermoswitch is on.

Description The engine ECM controls the throttle valve opening. As a result, the engine speed cannot increase to more than 2000– 3000 r/min. Also, the alert buzzer sounds and the overheat alert indicator comes on.

Low oil pressure control Criteria The pressure decreases to less than 250 kPa (2.5 kgf/cm2, 36.25 psi).

Description The engine ECM controls the throttle valve opening. As a result, the engine speed cannot increase to more than 2000– 3000 r/min. Also, the alert buzzer sounds and the oil pressure alert indicator comes on.

2-12

9 10

A

2011 YAMAHA F225CA 4-STROKE OUTBOARD Service Repair Manual SN:1000001 and up  
2011 YAMAHA F225CA 4-STROKE OUTBOARD Service Repair Manual SN:1000001 and up  
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