Yamaha RX10RTL, Supplemental Service Manual

Page: 165 / 355

FI
Fault code No.
Er-1 Symptom No signal are received from the ECU.
Er-2 Symptom No signal are received from the ECU within the specified duration.
Er-3 Symptom Data from the ECU cannot be received correctly.
Er-4 Symptom Non-registered data has been received from the meter.
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.
Cylinder identification sensor coupler
Main wiring harness ECU coupler
Sub-wire harness coupler
Reinstated by
turning the main
switch ON.
2 Open or short circuit in wiring harness
and/or sub lead. Repair or replace if there is an open or short circuit.
Between sensor coupler and ECU coupler
Yellow/Blue – Yellow/Blue
Black/White – Black/White
3 Malfunction in meter Replace the meter.
4 Malfunction in ECU Replace the ECU.
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FUEL INJECTION SYSTEM