Yamaha FZ6-SS 2004 Service Manual page 365

Fault code No. Er-4
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 Open or short circuit in wiring harness
and / or sub lead.
3 Malfunction in meter
4 Malfunction in ECU
FUEL INJECTION SYSTEM
Symptom Non-registered data has been received from the meter.
Operation item and countermeasure
If there is a malfunction, repair it and connect it
securely.
Main wiring harness ECU coupler
Sub-wire harness coupler
Repair or replace if there is an open or short
circuit.
Between meter coupler and ECU coupler
yellow / blue - yellow / blue
black / white - black / white
Replace the meter.
Replace the ECU.
7-24
FI
Reinstatement
method
Reinstated by
turning the
main switch
ON and
receives a
normal signal.