If the radiator fan relay is normal, check the wiring for continuity, using the wiring diagram in this section.
Special Tool - Hand Tester: 57001-1394
If the wiring is good, check the ECU for its ground and power supply (see ECU Power Supply Inspection in the Fuel System (DFI) chapter).
If the ground and power supply are good, replace the ECU (see ECU Removal/Installation in the Fuel System (DFI) chapter).
Radiator Fan Circuit

1. ECU
2. Fan Motor
3. Ignition Switch
4. Joint Connector F
5. Fuse Box 1
6. Ignition Fuse 15 A
7. Relay Box
8. Fan Relay
9. Frame Ground 3
10. Fuse Box 2
11. Fan Fuse 15 A
12. Starter Relay
13. Main Fuse 30 A
14. Battery
15. Engine Ground
Radiator Fan Relay Removal/InstallationAverage Mileage
This display mode shows the average
mileage by numerical value
counted from the start of measuring to
present time.
A. Average Mileage
B. “AV km/L�
While the average mileage is displayed,
push the lower button and
hold it in until the average mileage
values resets to “– †...
Diode Circuit Inspection
Remove the relay box (see Relay Box Removal).
Check conductivity of the following pairs of terminals (see
Relay Box Internal Circuit in this section).
Diode Circuit Inspection
The resistance should be low in one direction and more
than 10 times as much in the other direction. If any dio ...
Economical Riding Indicator
When the operator is driving the motorcycle
for optimum fuel-efficiency, the
economical riding indicator appears on
the multifunction meter to indicate favorable
fuel consumption. Monitoring
the economical riding indicator can
help the rider maximize fuel efficiency.
A. Economical Riding ...