Yamaha MBK X-MAX 300 2017, Service Manual

Page: 376 / 462

FUEL INJECTION SYSTEM
8-71
3-6 [For P1605] Open circuit
Between lean angle sensor coupler and ECU coupler: black/blue–black/blue
If there is no continuity, replace the wire harness.
3-7 Disconnect the couplers from the parts that are connected to the ECU.
Refer to “Parts connected to the ECU” on page 8-35.
3-8 [For P1604/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. Execute the diagnostic mode.
(Code No. D08)
Upright 0.4–1.4 V
Overturned 3.7–4.4 V
An indicated value is out of the
specified range.
→
Replace the
lean angle sensor.
Turn the main switch to “ON”,
then to “OFF”, and then back to
“ON”.
Check the condition of the fault
code using the malfunction
mode of the Yamaha diagnostic
tool.
Condition is “Recover”
→
Go to
item 6 and finish the service.
Condition is “Malfunction”
→
Go
to item 5.
5 Malfunction in ECU. Replace the ECU.
Refer to “REPLACING THE
ECU (Engine Control Unit)” on
page 8-128. Service is finished.
6 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 Yamaha diagnostic tool, and
then delete the fault code.
Fault code No. P1604, P1605
Item
[P1604] Lean angle sensor: ground short circuit detected.
[P1605] Lean angle sensor: open or power short circuit detected.
B / L Y / B B / W G / Y P O / B R / W W Br / R B / L L L
W / Y Sb Gy B / L Y Y / G L / R G / R L / Y
W / R B W / B O L / B Br / W Gy / R R / B B / L P / W Y / L B / W
B / L Y / G L
B / L Y / B B / W G / Y P O / B R / W W Br / R B / L L L
W / Y Sb Gy B / L Y Y / G L / R G / R L / Y
W / R B W / B O L / B Br / W Gy / R R / B B / L P / W Y / L B / W
b
a