Yamaha TMAX TECH MAX 2020 - COMMUNICATION ERROR WITH THE METER; DIAGNOSTIC CODE: SENSOR OPERATION TABLE

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SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
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] Multi-func-
tion meter: signals
cannot be transmit-
ted between the
ECU and the multi-
function meter.
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.
Grip warmer system
cannot be operated.
MAP changeover:
State is fixed.
Traction control
does not work.
Meter switch input:
OFF is fixed.
Cruise control sys-
tem cannot be oper-
ated.
Diagnostic
code No.
Item Tool display Procedure
D01 Throttle position sensor
signal 1
• Fully closed position 11–20 Check with throttle valves
fully closed.
• Fully open position 95–106 Check with throttle valves
fully open.
D03 Intake air pressure Displays the intake air
pressure.
Operate the throttle while
pushing the ON/start
switch. (If the display value
changes, the performance
is OK.)
D05 Intake air temperature Displays the intake air
temperature.
Compare the actually
measured air temperature
with the tool display value.
D06 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.
D07 Rear wheel vehicle speed
pulses
Rear wheel speed pulse
0–999
Check that the number in-
creases when the rear
wheel is rotated. The num-
ber is cumulative and does
not reset each time the
wheel is stopped.