Yamaha YZF-R1(B) 2012 Service Manual page 458

Fault code No.
Symptom
Fail-safe action
Diagnostic monitor-
ing code No.
Meter display
Checking method
Item/components and
probable cause
3 Continuity of wire harness
4 Installation status of intake
air temperature sensor
5 Intake air temperature sensor
malfunction
6 ECU malfunction
22
Open or short circuit of intake air temperature sensor lead
Engine startup: Possible
Riding: Possible
D:05
When engine is cold: Displays temperature closer to air temperature
When engine is hot: Air temperature + approx. 20 °C (68 °F)
Compare the actually measured intake air temperature with the
meter display value.
Check or maintenance job
Open or short circuit →
Replace the wire harness.
Black/Blue–Black/Blue
Brown/White–Brown/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. 05).
Sensor inspection procedure
Refer to "CHECKING THE
INTAKE AIR TEMPERA-
TURE SENSOR" on page 8-
146.
During cold starting: A tem-
perature close to the ambient
temperature is indicated.
Indication is incorrect. →
Replace the intake air tem-
perature sensor.
Replace the ECU
FUEL INJECTION SYSTEM
8-61
Sensor inspection proce-
dure
Place the main switch to the
ON position, and check the
fault code indication.
No fault code indicated. →
Recovered.
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. →
Recovered.
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. →
Recovered.
Fault code indicated. →
Check the next step.