Yamaha R15 2022, Service Manual

Page: 422 / 497

8-89
FUEL INJECTION SYSTEM TROUBLESHOOTING
– + ELEC
4 Wire harness continuity. Open or short circuit
→
Replace
the wire harness.
Between O
2
sensor coupler and
ECU coupler.
gray/green–gray/green
black/blue–black/blue
pink/black–pink/black
Start the engine, warm it up,
and then race it.
Check the fault code using the
malfunction mode of the YDT.
Condition is “Recover”
→
Go to
item 8 and finish the service.
Condition is “Malfunction”
→
Go
to item 5.
Also, delete this fault code,
which has a condition of “Mal-
function”.
5 Check fuel pressure. Check the fuel pressure. Start the engine, warm it up,
and then race it.
Check the fault code using the
malfunction mode of the YDT.
Condition is “Recover”
→
Go to
item 8 and finish the service.
Condition is “Malfunction”
→
Go
to item 6.
Also, delete this fault code,
which has a condition of “Mal-
function”.
6 Defective O
2
sensor. Check the O
2
sensor.
Replace the O
2
sensor, if it is
defective.
Start the engine, warm it up,
and then race it.
Check the fault code using the
malfunction mode of the YDT.
Condition is “Recover”
→
Go to
item 8 and finish the service.
Condition is “Malfunction”
→
Go
to item 7.
Also, delete this fault code,
which has a condition of “Mal-
function”.
7 Malfunction in ECU. Replace the ECU. Service is finished.
8 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. P00D1, P2195
Item
[P00D1] O
2
sensor: heater performance deteriorated. Normal signal
is not received from the O
2
sensor while driving the O
2
sensor.
[P2195] O
2
sensor: Open circuit is detected.
BCWF8197E0.book Page 89 Thursday, November 18, 2021 9:18 AM