Checking the electrical component
5-18
Checking the electrical
component
Using the YDIS
When checking the ETV, TPS, SPS, OCV, igni-
tion spark, high-pressure fuel pump, fuel injec-
tor, and related sensors, use the YDIS.
• When deleting the diagnosis record in the
YDIS, make sure to check the time that the
trouble codes were detected.
• When checking the input voltage of a part,
the coupler or connector must be discon-
nected. As a result, the engine ECM deter-
mines that the part is disconnected and a
trouble code is detected. Therefore, make
sure to delete the diagnosis record after
checking the input voltage.
• To connect and operate the YDIS, see the
YDIS (Ver. 2.49 or later) instruction manual.
• The software is available through YMAN
(Yamaha Marine Associate Network).
Using the digital tester
The electrical technical data applies to the
measurements taken using the Yamaha rec-
ommended tester.
The resistance values shown are the values
taken before the engine is started. The actual
resistance may vary depending on the envi-
ronmental conditions and ambient tempera-
ture.
The input voltage changes depending on the
battery voltage. Check the battery and wire
harness if the input voltage is less than the
specified value. Check the components be-
tween the battery and the input voltage mea-
suring point if there is no problem with the
battery and wire harness.
If the tester probe cannot be inserted into the
coupler, prepare a test lead suitable for the
measurement.
YDIS 2 HARDWARE KIT III
90890-06980
Tester leads
90890-06976
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