Yamaha N MAX GPD150-A 2015, Service Manual

Page: 361 / 450

FUEL INJECTION SYSTEM
8-36
Fault code No. 16
NOTICE
ECA20500
Do not remove the throttle body sensor assembly from the throttle body.
1 Connection of throttle body sen-
sor assembly 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”.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is displayed
→
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.
Turn the main switch to “ON”.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is displayed
→
Go to item 3.
3 Wire harness continuity. Open or short circuit
→
Replace
the wire harness.
Between throttle body sensor
assembly coupler and ECU cou-
pler.
Black/Blue–Black/Blue
Yellow–Yellow
Blue–Blue
Turn the main switch to “ON”.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is displayed
→
Go to item 4.
4 Installed condition of throttle
body sensor assembly.
Check for looseness or pinch-
ing. Check for looseness or pinch-
ing.
Improperly installed sensor
→
Replace the throttle body.
Refer to “THROTTLE BODY” on
page 7-10.
Turn the main switch to “ON”.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is displayed
→
Go to item 5.
5 Defective throttle position sen-
sor. Check throttle position sensor
signal.
Execute the diagnostic mode.
(Code No. 01)
When the throttle valves are ful-
ly closed:
A value of 13–21 is indicated.
When throttle valves are fully
open:
A value of 92–102 is indicated.
An indicated value is out of the
specified range
→
Replace the
throttle body if defective.
Refer to “THROTTLE BODY” on
page 7-10.
Turn the main switch to “ON”.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is displayed
→
Go to item 6.
6 Malfunction in ECU. Replace the ECU.
Refer to “REPLACING THE
ECU (engine control unit)” on
page 8-99.
Fault code No. 15
Item Throttle position sensor: open or short circuit detected.