Yamaha MT-09 2021 - Communication Error with the Meter; Diagnostic Code: Sensor Operation Table

9-76
SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
* The DTC number varies according to the vehicle conditions.
EAS33030
COMMUNICATION ERROR WITH THE METER
EAS33031
DIAGNOSTIC CODE: SENSOR OPERATION TABLE
DTC Item
Probable cause of
malfunction
Vehicle symptom
Fail-safe system
operation
U0155
(YDT)
Err (multi-
function
meter dis-
play)
[U0155 (FI)] Multi-
function meter: sig-
nals cannot be
transmitted between
the ECU and the
multi-function me-
ter.
Communication be-
tween the ECU and
the meter is not pos-
sible
• Defective meter
coupler and ECU
coupler
• Open or short cir-
cuit in the wire har-
ness between the
meter and the
ECU
• Defective meter
• Defective ECU
Defective meter dis-
play.
Traction control
does not work.
MAP changeover:
State is fixed.
Traction control
does not work.
Meter switch input:
OFF is fixed.
QSS is not carried
out.
Cruise control sys-
tem cannot be oper-
ated. (for
MTN890D)
Diagnostic
code No.
Item Tool display Procedure
01 Throttle position sensor
signal 1
• Fully closed position 11–21 Check with throttle valves
fully closed.
• Fully open position 96–107 Check with throttle valves
fully open.
03 Intake air pressure Displays the intake air
pressure.
Operate the throttle while
pushing the “ ” side of the
stop/run/start switch. (If
the display value changes,
the performance is OK.)
04 Intake air pressure 2 Displays the intake air
pressure.
Operate the throttle while
pushing the “@” side of the
stop/run/start switch. (If
the display value changes,
the performance is OK.)
05 Intake air temperature Displays the intake air
temperature.
Compare the actually
measured air temperature
with the tool display value.
06 Coolant temperature When engine is cold: Dis-
plays temperature closer
to air temperature.
When engine is hot: Dis-
plays current coolant tem-
perature.
Compare the actually
measured coolant tem-
perature with the tool dis-
play value.