Yamaha R15 2022 Service Manual page 418

FUEL INJECTION SYSTEM TROUBLESHOOTING
Fault code No.
Item
3-8 [For P1605] Short circuit
Between lean angle sensor output terminal (yellow/green) "a" of ECU coupler and any other ECU
coupler terminal "b".
If there is continuity, replace the wire harness.
4 Defective lean angle sensor.
5 Malfunction in ECU.
6 Delete the fault code and check
that the engine trouble warning
light goes off.
P1604, P1605
[P1604] Lean angle sensor: short to ground circuit is detected.
[P1605] Lean angle sensor: open or short to power circuit is detected.
Ch Y/B B/R R/W L/G R/B
G Br R Lg/L W
B/Y L Lg/W W/B B/L B/W
b
Execute the diagnostic mode.
(Code No. 08)
Upright: 0.4 - 1.4
Overturned: 3.7 - 4.4
The display is out of the speci-
fied range → Replace the lean
angle sensor.
Replace the ECU.
Confirm that the fault code has
a condition of "Recover" using
the YDT, and then delete the
fault code.
8-85
a
V P/W Or/B W/Y B/L W/R Y
Y/R G/R Y/G Y/L B/L L B
Br/W Gy/G Y/W B/L B/L P/B Or
B
Turn the main switch to "ON",
then to "OFF", and then back to
"ON".
Check the fault code using the
malfunction mode of the
YDT.
Condition is "Recover" → Go to
item 6 and finish the service.
Condition is "Malfunction" → Go
to item 5.
Service is finished.
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