Yamaha N MAX GPD150-A 2015 Service Manual page 374

Fault code No.
Item
Probable cause of malfunc-
Item
tion and check
1 Malfunction in ECU.
Fault code No. 61
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Action
Procedure
Probable cause of malfunc-
Item
tion and check
1 Connection of ISC unit 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).
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.
4 Faulty ISC unit operation.
50
Faulty ECU memory. (When this malfunction is detected in the ECU,
the fault code number might not appear on the tool display.)
Maintenance job
Replace the ECU.
Refer to "REPLACING THE
ECU (engine control unit)" on
page 8-99.
61
ISC (idle speed control) unit: open or short circuit detected.
Able to start engine
Able to drive vehicle
–
–
–
Maintenance job
Improperly connected → Con-
nect the coupler securely or re-
place the wire harness.
Improperly connected → Con-
nect the coupler securely or re-
place the wire harness.
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
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 7-12.
8-49
FUEL INJECTION SYSTEM
Confirmation of service com-
Turn the main switch to "ON".
Check that the fault code num-
ber is not displayed.
Confirmation of service com-
Set the main switch to "ON".
Fault code number is not dis-
played → Service is finished.
Fault code number is displayed
→ Go to item 2.
Set the main switch to "ON".
Fault code number is not dis-
played → Service is finished.
Fault code number is displayed
→ Go to item 3.
Set the main switch to "ON".
Fault code number is not dis-
played → Service is finished.
Fault code number is displayed
→ Go to item 4.
Set the main switch to "ON".
Fault code number is not dis-
played → Service is finished.
Fault code number is displayed
→ Go to item 5.
pletion
pletion