Normal Signals Are Not Received From The Crankshaft Position Sensor - Yamaha 2009 YZF-R1 (Y) Service Manual

Fault code No.
Symptom
Fail-safe action
Diagnostic monitor-
ing code No.
Meter display
Checking method
Item/components and
probable cause
5 Sensor installation status
- Check the mounting section
for loose or pinched mount-
ing.
6 Cylinder identification sensor
malfunction
7 ECU malfunction
Fault code No.
Symptom
Fail-safe action
Diagnostic monitor-
ing code No.
Meter display
Checking method
Item/components and
probable cause
1 Connection of crankshaft
position sensor coupler
Check the connection of the
coupler is secure.
Remove the coupler, and
check each pin (for bending,
wear, or locking).
2 Connection of main harness
ECU coupler
Check the connection of the
coupler is secure.
Remove the coupler, and
check each pin (for bending,
wear, or locking).
11
Normal signals are not received from the cylinder identification sen-
sor.
Engine startup: Impossible
Riding: Possible
—
—
—
Check or maintenance job
Incorrect installation → Rein-
stall or repair the sensor.
Sensor inspection procedure
Refer to "CHECKING THE
CYLINDER IDENTIFICA-
TION SENSOR" on page 8-
141.
Replace the ECU.
12
Normal signals are not received from the crankshaft position sen-
sor.
Engine startup: Impossible
Riding: Impossible
—
—
—
Check or maintenance job
Poor connection → Connect
it securely, or repair/replace
the wire harness.
Poor connection → Connect
it securely, or repair/replace
the wire harness.
FUEL INJECTION SYSTEM
8-46
Sensor inspection proce-
dure
Crank the engine, and check
the fault code indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
Crank the engine, and check
the fault code indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
Sensor inspection proce-
dure
Crank the engine, and check
the fault code indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
Crank the engine, and check
the fault code indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.