Yamaha XT660R S Service Manual page 366

Fault code No. Er-1
Used diagnostic code No. – –
Order Item/components
1 Coupler connections
ECU coupler
Meter couplers
2 Malfunction in meter assembly
3 Malfunction in ECU
Fault code No. Er-2
Used diagnostic code No. – –
Order Item/components
1 Coupler connections
ECU coupler
Meter couplers
2 Malfunction in meter assembly
3 Malfunction in ECU
Fault code No. Er-3
Used diagnostic code No. – –
Order Item/components
1 Coupler connections
ECU coupler
Meter couplers
2 Malfunction in meter assembly
3 Malfunction in ECU
Fault code No. Er-4
Used diagnostic code No. – –
Order Item/components
1 Coupler connections
ECU coupler
Meter couplers
2 Malfunction in meter assembly
3 Malfunction in ECU
FUEL INJECTION SYSTEM
Symptom No signals are received from the ECU.
Check or maintenance job
Check the couplers for any pins that may have
pulled out.
Check that the couplers are securely locked.
If there is a malfunction, repair it and connect it
securely.
Replace the meter assembly.
Replace the ECU.
Symptom No signals are received from the ECU within the specified duration.
Check or maintenance job
Check the couplers for any pins that may have
pulled out.
Check that the couplers are securely locked.
If there is a malfunction, repair it and connect it
securely.
Replace the meter assembly.
Replace the ECU.
Symptom Data from the ECU cannot be received correctly.
Check or maintenance job
Check the couplers for any pins that may have
pulled out.
Check that the couplers are securely locked.
If there is a malfunction, repair it and connect it
securely.
Replace the meter assembly.
Replace the ECU.
Symptom Non-registered data has been received from the meter.
Check or maintenance job
Check the couplers for any pins that may have
pulled out.
Check that the couplers are securely locked.
If there is a malfunction, repair it and connect it
securely.
Replace the meter assembly.
Replace the ECU.
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FI
Restore method
Reinstated automati-
cally when it receives
a normal signal.
Reinstated automati-
cally when it receives
a normal signal.
Restore method
Reinstated automati-
cally when it receives
a normal signal.
Restore method
Reinstated automati-
cally when it receives
a normal signal.
Restore method
Reinstated automati-
cally when it receives
a normal signal.