Yamaha YZF-R1S, Service Manual

Page: 375 / 457

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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
appear alternately at 2-second intervals.)
2. Readjust the CO of the displayed cylinder.
Refer to “ADJUSTING THE EXHAUST GAS
VALUME” 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
engine and
operating it at
idle.
2 Faulty battery Replace or change the battery
Refer to “CHECKING AND CHARGING THE
BATTERY” in chapter 3.
3 The malfunction of the rectifier / regula-
tor. Replace if defective.
Refer to “CHARGING SYSTEM” in chapter 8.
4 Open or short circuit in wiring harness. Repair or replace if there is an open or short
circuit.
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