Replace the wheel rotation sensor if it is cracked, bent, or otherwise damaged.

Rear Wheel Rotation Sensor Installation
Wheel Rotation Sensor Air Gap InspectionAir Cleaner Housing Removal
Remove the fuel tank (see Fuel Tank Removal).
Disconnect the secondary fuel hose [A] from the delivery
pipe of the nozzle assy [B] (see Fuel Hose Replacement
in the Periodic Maintenance chapter).
Disconnect the secondary fuel injector connectors [C].
Free the lead from the grooves [D].
...
Relay Box Removal
Remove the left fuel tank cover (see Fuel Tank Removal
in the Fuel System (DFI) chapter).
Disconnect the connectors [A].
Pull out the relay box [B] from the rubber protector [C].
NOTE
The relay box has relays and diodes. The relays and
diodes can not be removed.
Relay Box Installa ...
Oxygen Sensor Heater Resistance Inspection
Turn the ignition switch to OFF.
Remove the fuel tank (see Fuel Tank Removal in the Fuel
System (DFI) chapter).
Disconnect the oxygen sensor lead connector [A].
Connect a digital meter [A] to the terminals in the oxygen
sensor lead connector [B].
Measure the oxygen sensor heat ...