Yamaha FX10X 2008, Service Manual

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FI
FUEL INJECTION SYSTEM
Fault code No.
Er-1 Symptom No signals are received from the ECU.
Er-2 Symptom No signals are received from the ECU within the specified signal time.
Er-3 Symptom Data from the ECU cannot be received correctly.
Er-4 Symptom Non-registered data has been received from the meter.
Diagnostic code No. – –
Order Item/components and probable cause Check or maintenance job Reinstatement
method
1 Connections
Wire harness ECU coupler
Speedometer unit sub-lead coupler
Check 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 the
coupler securely. Setting the
engine stop
switch to “RUN”
and turning the
main switch on.
2 Open or short circuit in wire harness
and/or speedometer unit sub-lead. Repair or replace if there is an open or short cir-
cuit.
Between speedometer unit coupler and ECU
coupler.
Blue/Yellow – Blue/Yellow
3 Malfunction in speedometer unit. Replace the speedometer unit.
4 Malfunction in ECU. Replace the ECU.