Yamaha Tenere 700 2020, Service Manual

Page: 391 / 472

FUEL INJECTION SYSTEM
8-80
EAS31790
TROUBLESHOOTING DETAILS (EVENT CODE)
Event code No. U0155 or “Err”
TIP
• “Err” is displayed on the clock display of the multi-function meter, but the engine trouble warning light
does not come on.
• When the Yamaha diagnostic tool is used, event code No. U0155 is displayed as a fault code.
8 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.
Event code No. U0155 or “Err”
Item
Multi-function meter: signals cannot be transmitted between the ECU
and the multi-function meter.
Item
Probable cause of malfunc-
tion and check
Maintenance job
Confirmation of service com-
pletion
1 Connection of meter 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”,
and then check the condition of
the fault code using the mal-
function mode of the Yamaha di-
agnostic tool.
Condition is “Recover”
→
Go to
item 6 and finish the service.
Condition is “Malfunction”
→
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”,
and then check the condition of
the fault code using the mal-
function mode of the Yamaha di-
agnostic 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 meter assembly cou-
pler and ECU coupler.
blue/black–blue/black
blue/red–blue/red
Turn the main switch to “ON”,
and then check the condition of
the fault code using the mal-
function mode of the Yamaha di-
agnostic tool.
Condition is “Recover”
→
Go to
item 6 and finish the service.
Condition is “Malfunction”
→
Go
to item 4.
4 Defective meter assembly. Replace the meter assembly. Turn the main switch to “ON”,
and then check the condition of
the fault code using the mal-
function mode of the Yamaha di-
agnostic tool.
Condition is “Recover”
→
Go to
item 6 and finish the service.
Condition is “Malfunction”
→
Go
to item 5.