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/InstallationBalancer Assemble
Apply molybdenum disulfide oil solution to the ribs of the
balancer [A].
Apply molybdenum disulfide oil solution to the ribs of the
balancer gear [A].
Check that the rubber dampers [B] are in place.
Face the linked portion [C] to the bottom.
Assemble the balancer weight ...
US, CA and CAL Models
1. Hold the water hose [A]. Insert the tab into the slot.
2. Hold the water hose [B]. Insert the tab into the slot.
3. Water Hose Fitting on Cylinder Head
4. Heat Insulation Rubber Plate
5. Run the crankshaft sensor lead and the oil pressure switch lead into the
slot, and hook the slot
on ...
Tail/Brake Light (LED) Removal/Installation
Remove:
Upper Seat Cover (see Seat Cover Removal in the
Frame chapter)
Disconnect the tail/brake light connector [A].
Remove:
Tail/Brake Light Mounting Screws [A]
Bolts [B] and Brackets [C]
Bolt [D]
Remove the tail/brake light [A].
Bring down the rear fender rea ...