Yamaha YZF-R1B 2012 Service Manual page 457

Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys
Fault code No.
Symptom
Fail-safe action
Diagnostic monitor-
ing code No.
Meter display
Checking method
Item/components and
probable cause
6 Coolant temperature sensor
malfunction
7 ECU malfunction
* Check the sensor only when the engine is cold.
Fault code No.
Symptom
Fail-safe action
Diagnostic monitor-
ing code No.
Meter display
Checking method
Item/components and
probable cause
1 Connection of intake air 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).
email: info@motomatrix.co.uk
21
Open or short circuit of coolant temperature sensor lead
Engine startup: Possible
Riding: Possible
D:06
When engine is cold: Displays temperature closer to air temperature
When engine is hot: Displays current coolant temperature
Compare the actually measured coolant temperature with the meter
display value.
Check or maintenance job
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.
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
Poor connection → Connect
it securely, or repair/replace
the wire harness.
Poor connection → Connect
it securely, or repair/replace
the wire harness.
8-60
FUEL INJECTION SYSTEM
Sensor inspection proce-
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.
Sensor inspection proce-
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.
dure
dure