Yamaha YZF-R1S Service Manual page 375

Fault code No. 44
Used diagnostic No. 60 (EEP-ROM improper cylinder indication)
Order Inspection operation item and probable
cause
1 Malfunction in ECU
Fault code No. 46
Used diagnostic code No. – –
Order Inspection operation item and probable
cause
1 Connected condition of connector
Inspect the coupler for any pins that
may have pulled out.
Check the locking condition of the
coupler.
2 Faulty battery
3 The malfunction of the rectifier / regula-
tor.
4 Open or short circuit in wiring harness.
FUEL INJECTION SYSTEM
Symptom Error is detected while reading or writing on EEP-ROM
(CO adjustment value).
Operation item and countermeasure
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.
Symptom Power supply to the FI system relay is not normal.
Operation item and countermeasure
If there is a malfunction, repair it and connect it
securely.
ECU coupler.
Replace or change the battery
Refer to "CHECKING AND CHARGING THE
BATTERY" in chapter 3.
Replace if defective.
Refer to "CHARGING SYSTEM" in chapter 8.
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
7-31
FI
Reinstatement
method
Reinstated by
turning the
main switch
ON.
Reinstatement
method
Reinstated by
starting the
engine and
operating it at
idle.