Yamaha FZ1-N Service Manual page 397

Fault code No. Er-1 Symptom
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-2 Symptom
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.
—
cause
No signals are received from the ECU within the specified
—
cause
FUEL INJECTION SYSTEM
No signals are received from 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.
duration.
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
Turning the
main switch to
"ON".
—
Reinstatement
Turning the
main switch to
"ON".
method
method