Yamaha 2008 Fazer FZ1-N Service Manual page 442

Fault code No. Er-3 Symptom Data from the ECU cannot be received correctly.
Diagnostic code No.
Item/components and probable
Order
Connections
• Main wire harness ECU coupler
• Main wire harness meter assembly
1 coupler
• Sub-wire harness coupler
Open or short circuit in wire harness.
2
3 Malfunction in meter assembly.
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
Connections
• Main wire harness ECU coupler
• Main wire harness meter assembly
coupler
1
• Sub-wire harness coupler
Open or short circuit in wire harness.
2
3 Malfunction in meter assembly.
4 Malfunction in ECU.
— —
cause
— —
cause
FUEL INJECTION SYSTEM
Check or maintenance job
• Check the couplers for any pins
that may be pulled out.
• Check the locking condition of
the couplers.
• If there is a malfunction, repair it
and connect the coupler
securely.
• Repair or replace if there is an
open or short circuit.
• Between meter assembly cou-
pler and ECU coupler.
(Yellow/Blue–Yellow/Blue)
Replace the meter assembly.
Replace the ECU.
Check or maintenance job
• Check the couplers for any pins
that may be pulled out.
• Check the locking condition of
the couplers.
• If there is a malfunction, repair it
and connect the coupler
securely.
• Repair or replace if there is an
open or short circuit.
• Between meter assembly cou-
pler and ECU coupler.
(Yellow/Blue–Yellow/Blue)
Replace the meter assembly.
Replace the ECU.
8-73
Reinstatement
method
Turning the
main switch to
"ON".
Reinstatement
method
Turning the
main switch to
"ON".