Yamaha YZFR6V, Руководство по обслуживанию

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FUEL INJECTION SYSTEM
8-54
Fault code No. 19 Symptom Open circuit is detected in the input lead from the side-
stand switch to the ECU.
Diagnostic code No. 20 Sidestand switch
Order Item/components and probable
cause
Check or maintenance job Reinstatement
method
1 Connections
• Main wire harness ECU coupler • Execute the diagnostic mode.
(Code No. 20)
• Check the coupler for any pins
that may be pulled out.
• Check the locking condition of
the coupler.
• If there is a malfunction, repair it
and connect the coupler se-
curely.
If the transmis-
sion is in gear,
retracting the
sidestand.
If the transmis-
sion is in neu-
tral,
reconnecting
the wiring.
2 Open or short circuit in wire harness. • Repair or replace if there is an
open or short circuit.
• Between ECU coupler and
main switch coupler.
(blue/black–blue/black)
• Between main switch coupler
and relay unit coupler.
(blue/yellow–blue/yellow)
• Between relay unit coupler and
sidestand switch coupler.
(blue/black–blue/black)
• Between sidestand switch cou-
pler and engine ground.
(black–black)
3 Defective sidestand switch. • Replace if defective.
Refer to “CHECKING THE
SWITCHES” on page 8-81.
Fault code No. 20 Symptom When the main switch is turned to “ON”, the atmospheric
pressure sensor voltage and intake air pressure sensor
voltage differ greatly.
Diagnostic code No. 03
02 Intake air pressure sensor
Atmospheric pressure sensor
Order Item/components and probable
cause
Check or maintenance job Reinstatement
method
1 Defective intake air pressure sensor
or atmospheric pressure sensor. • Execute the diagnostic mode.
(Code Nos. 03, 02)
• Replace if defective.
Refer to “CHECKING THE IN-
TAKE AIR PRESSURE SEN-
SOR” on page 8-100 or
“CHECKING THE ATMO-
SPHERIC PRESSURE SEN-
SOR” on page 8-99.
Turning the
main switch to
“ON”.