Yamaha XV1700P Service Manual page 24

• Self-diagnosis function
The ECU is equipped with a self-diagnosis function to ensure that the engine control system is
operating normally. The ECU mode functions include a diagnosis mode in addition to the normal
mode.
Normal mode
• To check for any blown bulbs, this mode illuminates a warning light while the main switch is
turned ON, and while the starter switch is being pressed.
• If the starting disable warning is activated, this mode alerts the rider by blinking the warning light
while the start switch is being pressed.
• If a malfunction occurs in the system, this mode provides an appropriate substitute characteristic
operation, and alerts the rider of the malfunction by illuminating a warning light. After the engine
is stopped, this mode displays a fault code on the clock LCD.
Diagnosis mode
• In this mode, a diagnostic code is input into the ECU through the operation of the operating
switch on the meter, and the ECU displays the values output by the sensors or actuates the
actuators in accordance with the diagnostic code. Whether the system is operating normally can
be checked by observing the illumination of the warning light, the values displayed on the meter,
or the actuating state of the actuators.
FEATURES
1 - 7
GEN
INFO