Fault Code 44 - Yamaha FZ8NA Service Manual

Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Item/components and
probable cause
1 Locate the malfunction.
2 "01" is indicated in Diagnostic
mode (Code No. d60)
EEPROM data error for
adjustment of CO concentra-
tion of cylinder #1
3 "02" is indicated in Diagnostic
mode (Code No. d60)
EEPROM data error for
adjustment of CO concentra-
tion of cylinder #2
44
EEPROM cylinder fault code number: an error is detected while
reading or writing on EEPROM (CO adjustment value).
Under certain conditions
Under certain conditions
d:60
EEPROM fault code display
• 00 (no history)
• 01–04: Cylinder fault code number (history exists)
If more than one cylinder is defective, the display switches every
two seconds to show the cylinder fault code numbers of all defec-
tive cylinders in a repeating cycle.
—
Check or maintenance job
Diagnostic mode (Code No.
d60)
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.
Change the CO concentra-
tion of cylinder #1, and
rewrite in EEPROM.
Refer to "ADJUSTING THE
EXHAUST GAS VOLUME"
on page 3-11.
After this adjustment is made,
the memory is not recovered
when the main switch is
turned OFF and ON again. →
Replace the ECU.
Change the CO concentra-
tion of cylinder #2, and
rewrite in EEPROM.
Refer to "ADJUSTING THE
EXHAUST GAS VOLUME"
on page 3-11.
After this adjustment is made,
the memory is not recovered
when the main switch is
turned OFF and ON again. →
Replace the ECU.
FUEL INJECTION SYSTEM
8-96
Sensor inspection proce-
dure
—
Place the main switch to the
ON position.
Then, check the fault code
indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Return to Step 1 to carry out
the check again. If the condi-
tion persists, proceed to Step
6.
Place the main switch to the
ON position.
Then, check the fault code
indication.
No fault code indicated. →
Recovered.
Return to Step 1 to carry out
the check again. If the condi-
tion persists, proceed to Step
6.