FUEL INJECTION SYSTEM
8-87
4 Continuity of wire harness Open short circuit → Replace
the wire harness.
Black/Yellow–Black/Yellow
Blue/Yellow–Blue/Yellow
Start the engine, and check
the secure connection of the
coupler.
Ride the vehicle at a low
speed (approx. 20–30 km/h).
Then, check the fault code
indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
5 Clutch switch malfunction Check the clutch switch.
Refer to “CHECKING THE
SWITCHES” on page 8-121.
Start the engine, and check
the secure connection of the
coupler.
Ride the vehicle at a low
speed (approx. 20–30 km/h).
Then, check the fault code
indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
6 ECU malfunction Replace the ECU.
Fault code No. 43
Symptom Incorrect voltage supplied to the fuel injector and fuel pump
Fail-safe action
Engine startup: Possible
Riding: Possible
Diagnostic monitor-
ing code No.
D:50
Meter display Approximately 12.0
Checking method
Set the engine stop switch to “ ”, and then compare with the actu-
ally measured battery voltage. (If the battery voltage is lower, per-
form recharging.)
Item/components and
probable cause
Check or maintenance job
Sensor inspection proce-
dure
1 Connection of relay unit cou-
pler
Check the connection of the
coupler is secure.
Remove the coupler, and
check each pin (for bending,
wear, or locking).
Poor connection → Connect
it securely, or repair/replace
the wire harness.
Start and idle the engine for
approximately 30 seconds.
Then, check the fault code
indication.
No fault indicated. → Recov-
ered.
Fault code indicated. →
Check the next step.
Item/components and
probable cause
Check or maintenance job
Sensor inspection proce-
dure
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