Yamaha Tracer MT09TRAH 2017 Service Manual page 452

Fault code No.
Item
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).
3 Wire harness continuity.
4 Defective air induction system
solenoid.
5 Malfunction in ECU.
P1400
Air induction system solenoid: open or short circuit detected.
Improperly connected  Con-
nect the coupler securely or
replace the wire harness.
Open or short circuit  Replace
the wire harness.
Between air induction system
solenoid coupler and ECU cou-
pler.
brown/red–brown/red
Between air induction system
solenoid coupler and joint con-
nector.
red/white–red/white
Between joint connector and
fuse box.
red/white–red/white
Refer to "CHECKING THE AIR
INDUCTION SYSTEM SOLE-
NOID" on page 8-171.
Replace the ECU.
Refer to "REPLACING THE
ECU (Engine Control Unit)" on
page 8-157.
8-81
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"  Start
the engine and check the status
of the fault code.
Condition is "Recovered"  Go
to item 6 and finish the service.
Condition is "Detected"  Go to
item 3.
TIP
Check that the start/engine stop
switch is turned to "ON" then.
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"  Start
the engine and check the status
of the fault code.
Condition is "Recovered"  Go
to item 6 and finish the service.
Condition is "Detected"  Go to
item 4.
TIP
Check that the start/engine stop
switch is turned to "ON" then.
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"  Start
the engine and check the status
of the fault code.
Condition is "Recovered"  Go
to item 6 and finish the service.
Condition is "Detected"  Go to
item 5.
TIP
Check that the start/engine stop
switch is turned to "ON" then.
Service is finished.