If the fuel injection indicator displays "fi", showing signs of trouble in the fuel injection system, take your machine to an authorized suzuki dealer. Refer to the "instrument panel:' section for fuel injection system indicator explanation. If the indicator does not display "fi", make sure there is enough fuel in the fuel tank. If the indicator does not display "fi" and there is enough fuel, ignition system should be checked.
Troubleshooting
Ignition system checkSteering / steering damper removal and
installation
Removal
steering damper
Turn the ignition switch off.
Disconnect the steering damper solenoid coupler
(1).
Remove the lower bracket cover (2).
Remove the steering damper mounting nut (3) while
holding the lock-nut (4).
Remove the steering damper mounting bolt ( ...
Camshaft inspection
Refer to “engine top side disassembly” .
Refer to “engine top side assembly” .
Camshaft identification
The exhaust camshaft has the embossed letters “ex”
and the intake camshaft has the embossed letters “in”.
Cam wear
Check the camshaft for wear or damage.
Measure the cam height “a” w ...
DTC “c40” (p0505 / p0506 / p0507): isc
valve circuit malfunction
Detected condition and possible cause
Detected condition
Possible cause
C40/P0505
The circuit voltage of motor drive is
unusual.
Isc valve circuit open or shorted to ground.
Air passage clogged.
Isc valve is fixed.
Isc valve prese ...