Yamaha YZ450FA 2011, Owner'S Service Manual

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FUEL INJECTION SYSTEM
2 EEPROM data error (CO adjustment
value) Change the CO density and
write the changed setting on
EEPROM. Set the switch on the
FI diagnostic tool sub-
wire harness to "ON",
and then check the
fault code display.
Fault code number
is not displayed
→
Service is finished.
Fault code number
is displayed
→
Re-
peat item 1. If the
fault code number is
still displayed, refer
to item 4.
3 EEPROM data error (Power Tuner ad-
justment values for fuel injection
amount or ignition timing) Erase the setting map in the
diagnostic mode (diagnostic
code No. D65). Set the switch on the
FI diagnostic tool sub-
wire harness to "ON",
and then check the
fault code display.
Fault code number
is not displayed
→
Service is finished.
Fault code number
is displayed
→
Re-
fer to item 1.
4 Malfunction in ECU. Replace the ECU.
Fault code No. 44
Symptom Error is detected while reading or writing on EEPROM.
Fail-safe system Able to start engine (depending on circumstances)
Able to drive vehicle (depending on circumstances)
Diagnostic code No. D60
FI diagnostic tool dis-
play 00: No fault
01: CO adjustment valve
07: Power Tuner adjustment values 0–8 for fuel injection amount or ignition
timing
Checking method —
Item Item/components and probable cause Check or maintenance job Checking method