Yamaha RX10RTL, Supplemental Service Manual

Page: 163 / 355

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.
Replace ECU if defective.
Reinstated by
turning the main
switch ON.
Fault code No. 46 Symptom Power supply to the Fuel injection 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 “BATTERY INSPECTION” in chapter 2.
3 The malfunction of the rectifier/regulator. 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.
• Between battery and fuse (ignition)
Red – Red
• Between fuse (ignition) and main switch
Red/Yellow – Red/Yellow
• Between main switch and load relay
Brown – Brown
• Between load relay and ECU
Brown/Blue – Brown/Blue
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.
Fault code No. 80 Symptom Grip warmer switch-short circuit detected.
Used diagnostic code No. – –
Order Inspection operation item and probable
cause
Operation item and countermeasure Reinstatement
method
1 Short circuit in wiring harness. Repair or replace if there is an short circuit.
Between switch coupler and switch coupler
Orange/White – Chocolate
Orange/Blue – Chocolate
Reinstated by
turning the main
switch ON.
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FUEL INJECTION SYSTEM