Yamaha 2007 FZ6-NA Service Manual page 429

Fault code No. Er-3 Symptom Data from the ECU cannot be received correctly.
Diagnostic code No.
Item/components and probable
Order
Connected state of connector
• Main wire harness ECU coupler
• Main wire harness meter coupler
1
• Sub-wire harness coupler
Open or short circuit in wire harness
and/or sub lead
2
3 Malfunction in meter unit
4 Malfunction in ECU
Fault code No. Er-4 Symptom Non-registered data has been received from the meter.
Diagnostic code No.
Item/components and probable
Order
Connected state of connector
• Main wire harness ECU coupler
• Main wire harness meter coupler
1
• Sub-wire harness coupler
Open or short circuit in wire harness
and/or sub lead
2
3 Malfunction in meter unit
4 Malfunction in ECU
— —
cause
— —
cause
FUEL INJECTION SYSTEM
Check or maintenance job
• 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 it securely.
• 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 unit.
Replace the ECU.
Check or maintenance job
• 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 it securely.
• 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 unit.
Replace the ECU.
8-56
Reinstate-
ment method
Reinstated
automatically
when it
receives a nor-
mal signal.
Reinstate-
ment method
Reinstated
automatically
when it
receives a nor-
mal signal.