Yamaha R15 2022, Service Manual

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8-70
FUEL INJECTION SYSTEM TROUBLESHOOTING
– + ELEC
3 Wire harness continuity. Open or short circuit
→
Replace
the wire harness.
Between crankshaft position
sensor coupler and ECU cou-
pler.
black/blue–black/blue
white/red–white/red
Crank the engine, and then
check the fault code using the
malfunction mode of the YDT.
Condition is “Recover”
→
Go to
item 7 and finish the service.
Condition is “Malfunction”
→
Go
to item 4.
4 Installed condition of crankshaft
position sensor.
Check for looseness or pinch-
ing.
Inspect the specified clearance
(0.85mm) between the sensor
and sensor rotor. Improperly installed sensor
→
Reinstall or replace the sen-
sor.
Crank the engine, and then
check the fault code using the
malfunction mode of the YDT.
Condition is “Recover”
→
Go to
item 7 and finish the service.
Condition is “Malfunction”
→
Go
to item 5.
5 Defective crankshaft position
sensor. Check the crankshaft position
sensor.
Replace the sensor, if it is de-
fective. Crank the engine, and then
check the fault code using the
malfunction mode of the YDT.
Condition is “Recover”
→
Go to
item 7 and finish the service.
Condition is “Malfunction”
→
Go
to item 6.
6 Malfunction in ECU. Replace the ECU. Service is finished.
7 Delete the fault code and check
that the engine trouble warning
light goes off. Confirm that the fault code has
a condition of “Recover” using
the YDT, and then delete the
fault code.
Fault code No. P0335
Item
Crankshaft position sensor: normal signals are not received from
the crankshaft position sensor.
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