FUEL INJECTION SYSTEM
9-35
6. ConditionThe current conditions are displayed. (Detected/Recovered)
7. Symptom
The symptoms of the detected malfunction are displayed.
8. Diagnosis code The diagnosis codes related to the detected malfunction are displayed.
9. FFD (only for models that can display freeze frame data) The mark “ ” is displayed when the freeze frame data is available.
10.ECU conduction time (hour: minute: second)
The total ECU conduction time (total hours the vehicle’s start switch was ON) when the malfunc-
tion was detected is displayed.
11.Number of main switch operation after detection
The number of times the meter light comes on by pushing the start switch between the malfunction
detection and code reading is displayed.
12.Number of occurrences The number of malfunction occurrences between th e malfunction detection and code reading is
displayed.
EAS2GC1378TROUBLESHOOTING DETAILS
This section describes the measures per fault c ode number displayed on the diagnostic tool. Check
and service the items or components that are the probable cause of the malfunction following the or-
der given.
After the check and service of the malfunctioning part have been completed, reset the diagnostic tool
display according to the reinstatement method.
Fault code No.:
Fault code number displayed on the diagnostic tool when the engine failed to work normally.
Diagnostic code No.:
Diagnostic code number to be used when the diagnostic mode is operated.
Fault code No. 12
Item Crankshaft position sensor: no normal signals are received
from the crankshaft position sensor.
Fail-safe system Unable to start engine
Unable to drive vehicle
Diagnostic code No. —
Diagnostic tool display —
Procedure —
Item Probable cause of malfunc-
tion and check Maintenance jobConfirmation of service
completion
1 Connection of crankshaft po- sition sensor coupler.
Check the locking condition
of the coupler.
Disconnect the coupler and
check the pins (bent or bro-
ken terminals and locking
condition of the pins). Improperly connected
Connect the coupler securely
or repair/replace the wire har-
ness. Crank the engine.
Fault code number is not dis-
played
Service is finished.
Fault code number is dis-
played Go to item 2.
LIST OF SELF-DIAGNOSTIC AND FAIL-SAFE ACTIONS
10-6
SENSOR OPERATION TABLEDiag-
nostic code No. Item Display Procedure
01 Throttle position sensor sig- nal
• Fully closed position
• Fully opened position • 11–14
• 109–116 • Check with throttle valve
fully closed.
• Check with throttle valve fully open.
03 Intake air pressure Displays the intake air pres- sure.Operate the throttle while
pushing the start switch. (If
the display value changes,
the performance is OK.)
05 Intake air temperature Displays the intake air tem- perature.Compare the actually mea-
sured intake air tempera-
ture with the Yamaha
diagnostic tool display val-
ue.
06 Coolant temperature When engine is cold: Dis- plays temperature closer to
air temperature.
When engine is hot: Displays
current coolant temperature.Compare the actually mea-
sured coolant temperature
with the Yamaha diagnostic
tool display value.
07 Vehicle speed pulses Vehicle speed pulse 0–999Check that the number in-
creases when the front
wheel is rotated. The num-
ber is cumulative and does
not reset each time the
wheel is stopped.
08 Lean angle sensor • Upright
• Overturned Displays the output voltage.
• 0.4–1.4
• 3.7–4.4 Remove the lean angle
sensor, and incline it more
than 45 degrees.
09 Monitor voltage Displays the fuel system volt- age.
• Approximately 12.0 (V)—
21 Neutral switch • Gear in neutral
• Gear not in neutral •ON
•OFF Operate the shift pedal.
60 EEPROM fault code display • No fault
• CO adjustment value
• Setting tool adjustment values 0–8 for fuel injec-
tion amount or ignition tim-
ing •00
•01
•07
—
61 Malfunction history ( ) code No. display *1
• There is no history.
• There is some history. •00
• Other: Displays the fault
code of ( ). —
