Yamaha MTN1000 2016 Service Manual page 495

Fault code No.
Item
2 Connection of wire harness
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).
3 Wire harness continuity.
3-1
1. EXUP servo motor
2. ECU
3. Sensor input lead
4. Sensor output lead
5. Sensor ground lead
3-2 Disconnect the ECU coupler from the ECU.
Disconnect the EXUP servo motor coupler from the EXUP servo motor.
3-3 [For P048D] Ground short circuit
Between EXUP servo motor coupler and ground: white/yellow–ground
If there is continuity, replace the wire harness.
P048D, P048E
[P048D] EXUP servo motor: open or ground short circuit detected.
[P048E] EXUP servo motor: power short circuit detected.
Improperly connected  Con-
nect the coupler securely or
replace the wire harness.
Open or short circuit  Replace
the wire harness.
1
3
L
4
W/Y
5
B/L
8-78
FUEL INJECTION SYSTEM
Turn the main switch to "ON",
and then check the condition of
the fault code using the mal-
function mode of the Yamaha
diagnostic tool.
Condition is "Recovered"  Go
to item 6 and finish the service.
Condition is "Detected"  Go to
item 3.
Turn the main switch to "ON",
and then check the condition of
the fault code using the mal-
function mode of the Yamaha
diagnostic tool.
Condition is "Recovered"  Go
to item 6 and finish the service.
Condition is "Detected"  Go to
item 4.
2
5V
L
W/Y
B/L