Yamaha MBK X-MAX 300 2017, Service Manual

Page: 368 / 462

FUEL INJECTION SYSTEM
8-63
Fault code No. P0560
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). Improperly connected
→
Con-
nect the coupler securely or re-
place the wire harness.
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 “Recover”
→
Go to
item 6 and finish the service.
Condition is “Malfunction”
→
Go
to item 3.
3 Wire harness continuity. Open or short circuit
→
Replace
the wire harness.
Between ISC unit coupler and
ECU coupler.
pink–pink
green/yellow–green/yellow
gray–gray
sky blue–sky blue
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 “Recover”
→
Go to
item 6 and finish the service.
Condition is “Malfunction”
→
Go
to item 4.
4 Faulty ISC unit operation. Execute the diagnostic mode.
(Code No. D54)
ISC unit operation sound is not
heard.
→
Replace the ISC unit.
Refer to “CLEANING THE ISC
(IDLE SPEED CONTROL)
UNIT AND THROTTLE BODY”
on page 7-15.
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 “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. P0511
Item ISC (Idle Speed Control) unit: ISC unit does not operate.
Fault code No. P0560
Item Charging voltage is abnormal.
Fail-safe system
Able to start engine
Able to drive vehicle
Diagnostic code No. —
Tool display —
Procedure —
Item
Probable cause of malfunc-
tion and check
Maintenance job
Confirmation of service com-
pletion