Yamaha MTN850-A 2017, Руководство по обслуживанию

Страница: 397 / 560

FUEL INJECTION SYSTEM
8-40
Fault code No. P0107, P0108
4 Defective O
2
sensor heater. Replace the O
2
sensor. 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 then check the
condition of the fault code.
Condition is “Recovered”

Go
to item 6 and finish the service.
Condition is “Detected”

Go to
item 5.
TIP
For this check, also set the
start/engine stop switch to “ON”.
5 Malfunction in ECU. Replace the ECU.
Refer to “REPLACING THE
ECU (Engine Control Unit)” on
page 8-157.
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 “Recovered”
using the Yamaha diagnostic
tool, and then delete the fault
code.
Fault code No. P0107, P0108
Item
[P0107] Intake air pressure sensor 1: ground short circuit detected.
[P0108] Intake air pressure sensor 1: open or power short circuit
detected.
Fail-safe system
Able to start engine
Able to drive vehicle
Diagnostic code No.
03
Tool display
Displays the intake air pressure 1.
Procedure
Operate the throttle while pushing the “ ” side of the start/engine stop
switch. (If the display value changes, the performance is OK.)
Item
Probable cause of malfunc-
tion and check
Maintenance job
Confirmation of service com-
pletion
1 Connection of intake air pres-
sure sensor 1 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
replace 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 “Recovered”

Go
to item 7 and finish the service.
Condition is “Detected”

Go to
item 2.
Fault code No. P0030
Item
O
2
sensor heater: defective heater controller detected.