Explanation Of Each Command - Yamaha WaveRunner FX140 Service Manual

TRBL
OPERATING
ANLS E

EXPLANATION OF EACH COMMAND

1. Diagnosis
The diagnosis codes, their corresponding part name, the diagnosing results, and the diagnostic cri-
teria are listed.
List of items:
Condition of coils (pulser coils)
Condition of sensors (throttle position sensor, intake air temperature sensor, intake air pressure
sensor, engine temperature sensor, and cam position sensor)
Condition of battery (battery voltage)
Operation of switches (slant detection switch)
2. Diagnosis record
The diagnosis code, its corresponding part name, oil pressure warning, overheat warning, the time
of occurrence, and the total operation hours are listed. This command enables you to check the
record of malfunctions, which will assist in reducing troubleshooting time. In addition, the diagnostic
codes of malfunctions that have occurred can be deleted from the ECM.
The items are the same as those listed above for Diagnosis.
3. Engine monitor
The input signal of each sensor for the ECM is displayed.
In addition, the sensing item that is displayed can be changed.
Sensing items:
Sensors (throttle position sensor, intake air temperature sensor, intake air pressure sensor, and
engine temperature sensor)
Voltage system (battery voltage)
Switches (engine shut-off switch, oil pressure switch, thermoswitch, and slant detection switch)
Operation signals (ignition and injectors)
4. Stationary test
With the engine off, operation tests are performed.
Test items:
Spark ignition coil for each cylinder
Fuel injector for each cylinder
Operation of the electric fuel pump
5. Active test
With the engine running, operation tests are performed.
Test items:
Dropped cylinder
9-17