Yamaha Tracer MT09TRAH 2017 Service Manual page 473

Event 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 meter assembly.
5 Malfunction in ECU.
6 Delete the fault code and check
that the engine trouble warning
light goes off.
U0155 or "Err"
Multi-function meter: signals cannot be transmitted between the
ECU and the multi-function meter.
Improperly connected  Con-
nect the coupler securely or
replace the wire harness.
Open or short circuit  Replace
the wire harness.
Between meter assembly cou-
pler and joint coupler.
light green/blue–light green/blue
light green/white–light
green/white
Between joint coupler and ECU
coupler.
light green/blue–light green/blue
light green/white–light
green/white
Replace the meter assembly.
Replace the ECU.
Refer to "REPLACING THE
ECU (Engine Control Unit)" on
page 8-157.
Confirm that the fault code has
a condition of "Recovered"
using the Yamaha diagnostic
tool, and then delete the fault
code.
8-102
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"  Go to
item 3.
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"  Go to
item 4.
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"  Go to
item 5.
Service is finished.