Yamaha YZFR1Y(C) 2009 Service Manual page 444

Fault code No.
Symptom
Fail-safe action
Diagnostic monitor-
ing code No.
Meter display
Checking method
Item/components and
probable cause
1 Connection of coolant tem-
perature 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).
3 Continuity of wire harness
4 Installation status of coolant
temperature sensor
5 Coolant temperature sensor
malfunction
6 ECU malfunction
*Check the sensor only when the engine is cold.
21
Open or short circuit of coolant temperature sensor lead
Engine startup: Possible
Riding: Possible
D:06
Displays the coolant temperature.
Compare the actually measured coolant temperature with the meter
display value.
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.
Open or short circuit →
Replace the wire harness
Black/Blue–Black/Blue
Green/White–Green/White
Check the mounting section
for a loose or pinched mount-
ing.
Make sure that the mounting
position is correct.
Check in the diagnostic mode
(Code No. 06).
During cold starting: A tem-
perature close to the ambient
temperature is indicated.
Indication is incorrect. →
Replace the coolant tempera-
ture sensor.
Replace the ECU.
8-57
FUEL INJECTION SYSTEM
Sensor inspection proce-
Place the main switch to the
ON position, and check the
fault code indication. No fault
code indicated. → Recov-
ered.
Fault code indicated. →
Check the next step.
Place the main switch to the
ON position, and check the
fault code indication. No fault
code indicated. → Recov-
ered.
Fault code indicated. →
Check the next step.
Place the main switch to the
ON position, and check the
fault code indication. No fault
code indicated. → Recov-
ered.
Fault code indicated. →
Check the next step.
Place the main switch to the
ON position, and check the
fault code indication. No fault
code indicated. → Recov-
ered.
Fault code indicated. →
Check the next step.
Place the main switch to the
ON position, and check the
fault code indication. No fault
code indicated. → Recov-
ered.
Fault code indicated. →
Check the next step.
dure