Yamaha F150B, Service Manual

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YDIS
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Function
• Diagnosis
Displays each part name, and the engine ECM trouble codes and status when the engine start
switch is turned to “ON.” This allows you to quickly specify malfunctioning parts. The trouble codes
displayed are the same as those described. See “Trouble code and checking step” (4-6).
• Diagnosis record
Displays each part name and the engine ECM trouble codes that have been registered. This
allows you to check the outboard motor’s record of malfunctions. The trouble codes displayed are
the same as those described. See “Trouble code and checking step” (4-6).
• Engine monitor
Each sensor status and the engine ECM data are displayed while the engine start switch is “ON.”
This enables you to find malfunctioning parts quickly. In addition, the data displayed using the
Engine monitor function can be displayed in a graph.
(*1) Intake air pressure
(*2) Engine oil pressure
(*3) Engine shut-off switch (*4) Neutral switch
(*5) Engine start switch
• Stationary test
Operation tests can be performed with the engine off.
• Active test
The tests can be carried out while the engine is running and the shift is in the N position. It is not
possible to carry out the test while the boat is running.
• Data logger
Displays 13 minutes of recorded data for 2 or more of the items stored in the engine ECM. In addi-
tion, the operating time as compared to the engine speed and the total operating time are dis-
played. This allows you to check the operating status of the engine. You can also save the engine
ECM record data on a file so that you can view and display the graph later.
Engine speed Throttle valve opening
Engine stop lanyard switch
(*3)
Intake pressure (*1) ISC valve opening Shift position switch (*4)
Atmospheric (ambient) pres-
sure
Fuel injection duration Dual engine system switch
Ignition timing Intake temperature Main switch (*5)
Battery voltage Engine temperature
Overheat thermoswitch
TPS voltage Oil pressure (*2) Shift cut-off switch
Ignite ignition coils #1 & #4 Operate injector (#1–#4) Operate ISC valve
Ignite ignition coils #2 & #3 Operate electric fuel pump
Fully open ISC valve Angle of ISC valve opening
Engine speed TPS voltage Intake pressure
Battery voltage Engine temperature Oil pressure