Yamaha XV19CTMX(C), Service Manual

Page: 431 / 494

FUEL INJECTION SYSTEM
7-40
EAS27460
TROUBLESHOOTING DETAILS
This section describes the measures per fault code number displayed on the meter. Check and service
the items or components that are the probable cause of the malfunction following the order given.
After the check and service of the malfunctioning part has been completed, reset the meter display ac-
cording to the reinstatement method.
Fault code No.:
Code number displayed on the meter when the engine failed to work normally. Refer to “Self-Diagnostic
Function table”.
Diagnostic code No.:
Diagnostic code number to be used when the diagnostic mode is operated. Refer to “DIAGNOSTIC
MODE” on page 7-33.
52 Headlight relay
Actuates the headlight relay
for five cycles of five sec-
onds. (ON 2 seconds, OFF 3
seconds)
Illuminates the engine trou-
ble warning light and head-
light.
Check the operating sound
of the headlight relay five
times.
54 ISC valve
Actuates and fully closes the
ISC valve, then opens it to
the standby opening position
when the engine is started.
This operation takes approxi-
mately 12 seconds until it is
completed.
Illuminates the engine trou-
ble warning light.
The ISC unit vibrates when
the ISC valve operates.
Diag-
nostic
code
No.
Item Actuation Checking method