Visually inspect the isc valve if necessary.

Throttle body inspection and cleaning
Throttle valve synchronizationCooling system inspection
Inspect cooling system
every 6 000 km (4 000 miles, 6 months)
Replace engine coolant
every 2 years
Engine coolant level inspection
Hold the motorcycle vertically.
Check the engine coolant level by observing the “f” and “l” lines on
the engine coolant reservoir tank. If the level i ...
Iat sensor removal and installation
Removal
Remove the air cleaner box. Refer to “air cleaner box removal and
installation” in section 1d .
Remove the iat sensor (1) from the air cleaner box.
Installation
Install the iat sensor in the reverse order of removal.
Pay attention to the following point:
t ...
DTC “c21” (p0110-h/l): iat sensor circuit
malfunction
Detected condition and possible cause
Detected condition
Possible cause
C21
Output voltage is not with in the following
range.
0.15 V ≤ Sensor voltage < 4.85 V
Iat sensor circuit open or short.
Iat sensor malfunction.
Ec ...