Yamaha YZF-R1P Utility Trailer User Manual


 
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FI
FUEL INJECTION SYSTEM
TROUBLESHOOTING DETAILS
This section describes the measures per fault code number displayed on the meter.Carry out check
and maintenance on items or components that could be a cause of malfunction in accordance with
the order.
When the check and maintenance of malfunctioned part is completed, restore the meter display
according to the Restore method.
Fault code No.:
Fault code number displayed on the meter when the engine failed to work normally. (Refer to
Diagnostic fault code table.)
Diagnostic code No.:
Code number to be used when the diagnostic monitoring mode is operated. (Refer to DIAG-
NOSTIC MODE.)
Fault code No. 11 Symptom No normal signals are received from the cylinder identification sensor.
Used diagnostic code No.--
Inspection operation item Operation item and countermeasure Reinstatement
method
Installed condition of sensor Check the installed area for looseness or pinching. Reinstated by
starting the engine
and operating it at
idle.
Defective cylinder identification sensor. Replace if defective.
1. Connect the pocket tester (DC 20 V) to the
cylinder identification sensor coupler termi-
nal as shown.
2. Set the main switch to ON.
3. Measure the cylinder identification sensor
output voltage.
4. Is the cylinder identification sensor OK?
Defective starter motor. Replace if defective.
Refer to ELECTRIC STARTING SYSTEM in
chapter 8.
Open or short circuit in wiring harness and/or
sub lead.
Repair or replace if there is an open or short circuit.
Between sensor coupler and ECU coupler
Blue - Blue
White/Black - White/Black
Black/Blue - Black/Blue
Connected condition of connector
Inspect the coupler for any pins that may
have pulled out.
Check the locking condition of the coupler.
If there is a malfunction, repair it and connect it
securely.
Cylinder identification sensor coupler
Main wiring harness ECU coupler
Sub-wire harness coupler
Tester positive probe
white
1
Tester negative probe
black/blue
2
Cylinder identification sensor
output voltage
When sensor is on
4.8 V or more
When sensor is off
0.8 V or less