Troubleshooting Method (Ecu); Ecu Detects An Abnormal Signal From A Sensor - Yamaha R1 Series 2015 Service Manual

ECU detects an abnormal signal from a sensor

If the ECU detects an abnormal signal from a sensor while the vehicle is being driven, the ECU illumi-
nates the engine trouble and system warning light and provides the engine with alternate operating in-
structions that are appropriate for the type of malfunction.
When an abnormal signal is received from a sensor, the ECU processes the specified values that are
programmed for each sensor in order to provide the engine with alternate operating instructions that
enable the engine to continue operating or stop operating, depending on the conditions.
EAS30506

TROUBLESHOOTING METHOD (ECU)

TIP
If there is a malfunction in the fuel injection system, the engine trouble and system warning light "1" will
come on, and a fault code number "2" will be displayed. If there are malfunctions in other systems, refer
to the troubleshooting sections for the systems indicated by the warning indicators.
The engine operation is not normal and the engine trouble and system warning light comes
on.
1. Check:
• Fault code number
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a. Check the fault code number displayed on the meter.
b. Identify the faulty system with the fault code number.
c. Identify the probable cause of the malfunction.
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2. Check and repair the probable cause of the malfunction.
Fault code No.
Check and repair. Refer to "TROUBLESHOOTING
DETAILS (ECU)" on page 8-54.
Monitor the operation of the sensors and actuators in
the diagnostic mode. Refer to "TROUBLESHOOT-
ING DETAILS (ECU)" on page 8-54 and "SELF-
DIAGNOSTIC FUNCTION AND DIAGNOSTIC
CODE TABLE (ECU)" on page 9-5.
3. Perform the reinstatement action for the fuel injection system.
Refer to "Confirmation of service completion" in the appropriate table in "TROUBLESHOOTING DE-
TAILS (ECU)" on page 8-54.
4. Set the main switch to "OFF", then to "ON" again, and then check that no fault code number is dis-
played.
TIP
If another fault code number is displayed, repeat steps (1) to (4) until no fault code number is displayed.
5. Erase the malfunction history in the diagnostic mode (code No.62). Refer to "SELF-DIAGNOSTIC
FUNCTION AND DIAGNOSTIC CODE TABLE (ECU)" on page 9-5.
FUEL INJECTION SYSTEM
90 17 12 : 00
1000 r/min
×
N km/h
0 1
2
ODO km
--.-
FUEL CON L
A 4 2 2
MODE -
PWR TCS SCS
Check and repair.
8-50
2
1
No fault code No.