Yamaha Waverunner VXS VX1800 Service Manual page 294

When the communication cable is used to connect a computer to the ECM, the ECM record data
can be saved and viewed on the computer.
The saved ECM record data can also be viewed offline.
Engine speed
APS 1
APS 2
Steering sensor
TPS 1
TPS 2
Intake air pressure
Battery voltage
Target TPS voltage*1
*1. Target TPS voltage
This item shows the target output voltage of the TPS.
This value is the control voltage that the ECM requires to set the target opening angle of the
throttle valve.
*2. Reference TPS voltage
This item shows the criterion output voltage of the TPS.
This value is used to detect the TPS output voltage during engine operation.
*3. Reference APS voltage
This item shows the criterion output voltage of the APS.
This value is used to detect the APS output voltage when the throttle lever is opened.
*4. Target TPS voltage for Idle Speed Control
ECM controls the engine idle speed by using the throttle valve attached to the TPS.
This target voltage is used by the ECM to achieve the target opening angle of the throttle
valve at the engine idle speed.
*5. Engine stop mode with switch
TIP:
To display the data and graphs, see the YDIS (Ver. 2.20) Instruction Manual.
8. Logging: While the computer and engine are not connected, record "Engine Monitor" data using
the adapter interface.
9. Engine record: Displays the number of times the engine was started during the period when en-
gine control was deactivated.
10. SCU initial learning: The RiDE system needs to be initialized again if any of the jet pump unit com-
ponent or RiDE motor has been replaced (or removed).
Ref. TPS voltage*2
Ref. APS voltage*3
Target TPS voltage for ISC*4
Engine stop mode
Engine start mode
SW-activated engine stop
mode*5
OTS mode
Cruise assist mode
Reverse mode
9-3
No-wake mode
Low-RPM mode
Engine shut-off switch
Main relay
ETV relay
Thermoswitch
Oil pressure switch
WARNING
ETV limit
YDIS