Yamaha Wolverine YX70EPNG, Service Manual

Page: 416 / 503

FUEL INJECTION SYSTEM
9-41
5. Item
The item names of the detected malfunction are displayed.
6. Condition
The 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 main switch was ON) when the malfunction
was detected is displayed.
11.Number of main switch operation after detection
The number of times the main switch was turned on between the malfunction detection and code
reading is displayed.
12.Number of occurrences
The number of malfunction occurrences between the malfunction detection and code reading is dis-
played.
EBS30281
TROUBLESHOOTING DETAILS (FUEL INJECTION SYSTEM)
This section describes the measures per fault code number displayed on the multi-function meter dis-
play. Check and service the items or components that are the probable cause of the malfunction fol-
lowing the order given.
After the check and service of the malfunctioning part has been completed, reset the multi-function me-
ter display according to the “Confirmation of service completion”.
Fault code No.:
Fault code number displayed on the multi-function meter when the engine failed to work normally.
Diagnostic code No.:
Diagnostic code number to be used when the diagnostic mode is operated. Refer to “SELF-DIAGNOS-
TIC FUNCTION AND DIAGNOSTIC CODE TABLE” on page 10-7.
Fault code No. 12
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. —
Indicated —
Procedure —
Item
Probable cause of malfunc-
tion and check
Maintenance job
Confirmation of service com-
pletion
1 Connection of crankshaft posi-
tion sensor 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). Improperly connected
→
Con-
nect the coupler securely or re-
place the wire harness.
Crank the engine.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is displayed
→
Go to item 2.