Elec; Electrical Systems; Fuel Control System; Checking The Fuel Injector - Yamaha F200A Supplementary Service Manual

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ELEC

Electrical systems

Fuel control system

Checking the fuel injector

1. Remove the intake silencer and discon-
nect the fuel injector coupler.
2. Connect the test harness (2 pins) to the
fuel injector.
NOTE:
Before connecting the test harness to the fuel
injector of cylinder #4, remove the vapor sep-
arator bracket 1.
3. Install the intake silencer.
CAUTION:
Do not start the engine when the intake
silencer is not installed.
4. Measure the fuel injector output peak
voltage. If out of specification, measure
the fuel injector resistance.
Digital circuit tester: 90890-03174
Peak voltage adaptor: 90890-03172
Test harness (2 pins): 90890-06861
31
8
S60L8010
S60L8020
https://www.boat-manuals.com/
Fuel injector output peak voltage
(use as reference):
#1 Red/yellow (R/Y) –
Orange/red (O/R)
#2 Red/yellow (R/Y) –
Orange/black (O/B)
#3 Red/yellow (R/Y) –
Orange/yellow (O/Y)
#4 Red/yellow (R/Y) –
Orange/red (O/R)
#5 Red/yellow (R/Y) –
Orange/black (O/B)
#6 Red/yellow (R/Y) –
Orange/yellow (O/Y)
r/min
1,500–3,000
DC V
5. Measure the resistance of the fuel injec-
tors. Replace if out of specification.
Digital circuit tester: 90890-03174
Fuel injector resistance
(use as reference):
14.0–15.0 Ω at 20 °C (68 °F)
Loaded
38–40
60L3D1X