Yamaha YZF-R1 2012, Service Manual

Page: 487 / 556

FUEL INJECTION SYSTEM
8-90
Fault code No. 44
Symptom An error is detected while reading or writing on EEP-ROM
Fail-safe action
Engine startup: Under certain conditions
Riding: Under certain conditions
Diagnostic monitor-
ing code No.
D:60
Meter display
The in self diagnostic code 44 detected EEP-ROM errors are indi-
cated.
If there are multiple errors, they are indicated in 2 seconds intervals
00 indication: Normal status
01 indication: CO concentration adjusted for cylinder #1
02 indication: CO concentration adjusted for cylinder #2
03 indication: CO concentration adjusted for cylinder #3
04 indication: CO concentration adjusted for cylinder #4
Checking method —
Item/components and
probable cause
Check or maintenance job
Sensor inspection proce-
dure
1 Locate the malfunction. Diagnostic mode (Code No.
60)
00 indication: Check number
6.
01 indication: Check number
2.
02 indication: Check number
3.
03 indication: Check number
4.
04 indication: Check number
5. —
2 “01” is indicated in Diagnostic
mode (Code No. 60)
EEP-ROM data error for
adjustment of CO concentra-
tion of cylinder #1 Change the CO concentra-
tion of cylinder #1, and
rewrite in EEP-ROM.
After this adjustment is
made, the memory is not
recovered when the main
switch is turned OFF and ON
again.
→
Replace the ECU.
Place the main switch to the
ON position.
Then, check the fault code
indication.
No fault code indicated.
→
Recovered.
Fault code indicated.
→
Check the next step.
3 “02” is indicated in Diagnostic
mode (Code No. 60)
EEP-ROM data error for
adjustment of CO concentra-
tion of cylinder #2 Change the CO concentra-
tion of cylinder #2, and
rewrite in EEP-ROM.
After this adjustment is
made, the memory is not
recovered when the main
switch is turned OFF and ON
again.
→
Replace the ECU.
Place the main switch to the
ON position.
Then, check the fault code
indication.
No fault code indicated.
→
Recovered.
Fault code indicated.
→
Check the next step.