Yamaha FZ6-SS 2004, Service Manual, Page: 363 / 456

7-22
FUEL INJECTION SYSTEM
FI
Fault code No. 44 Symptom Error is detected while reading or writing on EEP-ROM
(CO adjustment value).
Used diagnostic No. 60 (EEP-ROM improper cylinder indication)
Order Inspection operation item and probable
cause Operation item and countermeasure Reinstatement
method
1 Malfunction in ECU Execute diagnostic code 60
1.Check the faulty cylinder. (If there are multiple
cylinders, the number of the faulty cylinders ap-
pear alternately at 2-second intervals.)
2.Readjust the CO of the displayed cylinder.
Refer to “ADJUSTING THE EXHAUST GAS
VOLUME” in chapter 3.
Replace ECU if defective.
Reinstated by
turning the
main switch
ON.
Fault code No. 46 Symptom Power supply to the FI system relay is not normal.
Used diagnostic code No. – –
Order Inspection operation item and probable
cause Operation item and countermeasure Reinstatement
method
1 Connected condition of connector
Inspect the coupler for any pins that
may have pulled out.
Check the locking condition of the
coupler. If there is a malfunction, repair it and connect it
securely.
ECU coupler. Reinstated by
starting the en-
gine and oper-
ating it at idle.
2 Faulty battery Replace or change the battery
Refer to “CHECKING AND CHARGING THE BAT-
TERY” in chapter 3.
3 Open or short circuit in wiring harness. Repair or replace if there is an open or short cir-
cuit.
S
Between battery and main switch
red – red
S
Between main switch and fuse (ignition)
brown/blue – brown/blue
S
Between fuse (ignition) and ECU
red/white – red/white
Fault code No. 50 Symptom Faulty ECU memory. (When this malfunction is detected in the ECU, the fault
code number might not appear on the meter.)
Used diagnostic code No. – –
Order Inspection operation item and probable
cause Operation item and countermeasure Reinstatement
method
1 Malfunction in ECU Replace the ECU. Reinstated by
turning the
main switch
ON.