Intake Air Pressure Sensor Or Atmospheric Pressure Sensor - Yamaha R1 Series 2015 Service Manual

Fault code No.
Item
Item Probable cause of
malfunction and check
1 Connection of sidestand switch
coupler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
2 Connection of wire harness
ECU coupler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
3 Connection of relay unit coupler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
4 Wire harness continuity.
5 Defective sidestand switch.
6 Malfunction in ECU.
Fault code No. 20
Fault code No.
Item
Fail-safe system
Diagnostic code No.
19
Sidestand switch: a break or disconnection of the blue/yellow lead
of the ECU is detected.
Maintenance job
Improperly connected
nect the coupler securely or
replace the wire harness.
Improperly connected
nect the coupler securely or
replace the wire harness.
Improperly connected
nect the coupler securely or
replace the wire harness.
Open or short circuit
the wire harness.
Between relay unit coupler and
ECU coupler.
blue/yellow–blue/yellow
Between relay unit coupler and
sidestand switch coupler.
blue/black–blue/black
Execute the diagnostic mode.
(Code No. 20)
Shift the transmission into gear.
Sidestand retracted: "ON"
Sidestand extended: "OFF"
Replace if defective.
Replace the ECU.
Refer to "REPLACING THE
ECU (Engine Control Unit)" on
page 8-180.
20
Intake air pressure sensor or atmospheric pressure sensor: when
the main switch is turned to "ON", the Intake air pressure sensor
voltage and atmospheric pressure sensor voltage differ greatly.
Able to start engine
Able to drive vehicle
03, 02
8-64
FUEL INJECTION SYSTEM
Confirmation of service com-
Con- Turn the main switch to "ON",
and then extend and retract the
sidestand.
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 2.
Con- Turn the main switch to "ON",
and then extend and retract the
sidestand.
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 3.
Con- Turn the main switch to "ON",
and then extend and retract the
sidestand.
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 4.
Replace Turn the main switch to "ON",
and then extend and retract the
sidestand.
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 5.
Turn the main switch to "ON",
and then extend and retract the
sidestand.
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 6.
pletion