Yamaha TMAX XP500F 2015, Service Manual, Page: 411 / 478

FUEL INJECTION SYSTEM
8-54
Fault code No. 43
Fault code No. 42
Item
Speed sensor: no normal signals are received from the speed sen-
sor.
Fail-safe system
Able to start engine
Able to drive vehicle
Diagnostic code No. 07
Indicated
Vehicle speed pulse
0–999
Procedure
Check that the number increases when the front wheel is rotated. The
number is cumulative and does not reset each time the wheel is stopped.
Item
Probable cause of malfunc-
tion and check
Maintenance job
Confirmation of service com-
pletion
1 Connection of speed sensor
coupler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins). Improperly connected
→
Con-
nect the coupler securely or re-
place the wire harness.
Execute the diagnostic mode.
(Code No. 07)
Rotate the front wheel by hand
and check that the indicated val-
ue increases.
Value increases
→
Service is
finished.
Value does not increase
→
Go
to item 2.
2 Connection of ECU coupler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins). Improperly connected
→
Con-
nect the coupler securely or re-
place the wire harness.
Execute the diagnostic mode.
(Code No. 07)
Rotate the front wheel by hand
and check that the indicated val-
ue increases.
Value increases
→
Service is
finished.
Value does not increase
→
Go
to item 3.
3 Wire harness continuity. Open or short circuit
→
Replace
the wire harness.
Between speed sensor coupler
and ECU coupler.
White–White
Between speed sensor coupler
and joint coupler.
Black/Blue–Black/Blue
Blue–Blue
Between joint coupler and ECU
coupler.
Black/Blue–Black/Blue
Blue–Blue
Execute the diagnostic mode.
(Code No. 07)
Rotate the front wheel by hand
and check that the indicated val-
ue increases.
Value increases
→
Service is
finished.
Value does not increase
→
Go
to item 4.
4 Malfunction in ECU. Replace the ECU.
Fault code No. 43
Item
Fuel system voltage: incorrect voltage supplied to the fuel injection
system relay, fuel injector and fuel pump.
Fail-safe system
Able to start engine
Able to drive vehicle
Diagnostic code No. 09, 50