Yamaha FZ09E Service Manual page 381

FUEL INJECTION SYSTEM
Fault code No.
19
Item
Sidestand switch: a break or disconnection of the black/red
lead of the ECU is detected.
6
Defective sidestand switch. Execute the diagnostic Turn the main switch to "ON"',
mode. (Code No. 20) and then extend and retract
Shift the transmission into the sidestand.
gear.
Fault code number is not dis-
Sidestand retracted: "ON" played -+ Service is finished.
Sidestand extended: "OFF" Fault code number is dis·
Replace if defective.
played-+ Go to item 7.
7 Malfunction in ECU. Replace the ECU.
Refer to " REPLACING THE
ECU (engine control unit)" on
page 8-93.
Fault code No. 20
Intake air pressure sensor 1 or intake air pressure sensor 2:
Item
when the main switch is tu rned to " ON", the intake air pres-
sure sensor 1 voltage and intake air pressure sensor 2 volt-
age differ greatly.
Fail-safe system Able to start engine
Able to drive vehicle
Diagnostic code No. 03,04
03
Meter display Displays the intake air pressure.
Procedure Shift the transmission into gear, extend the sidestand, and then
operate the throttle while pushing the "(?)" side of the start/engine
stop switch. (If the display value changes, the performance is OK.)
04
Meter display Displays the intake air pressure.
Procedure Shift the transmission into gear, extend the sidestand, and then
operate the throttle while pushing the "(?)" side of the start/engine
stop switch. (If the display value changes, the performance is OK.)
Item
Probable cause of
Maintenance job Confirmation of service
malfunction and check completion
8-46