Yamaha YZF-R1 Series Service Manual page 556

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
EAS33030
COMMUNICATION ERROR WITH THE METER
DTC Item
U0155 [U0155 (FI)] Multi-
(YDT) function meter: sig-
Err (multi- nals cannot be trans-
function mitted between the
meter dis- ECU and the multi-
play) function meter.
[U0155 (SCU)] Abnor-
mal CAN communica-
tion (between meter
assembly and SCU)
EAS33031
DIAGNOSTIC CODE: SENSOR OPERATION TABLE
Diagnostic
code No.
D01 Throttle position sensor sig-
nal 1
• Fully closed position
• Fully open position
D02 Atmospheric pressure
D03 Intake air pressure
D05 Intake air temperature
D06 Coolant temperature
D07 Rear wheel vehicle speed
pulses
D09 Fuel system voltage
(battery voltage)
Probable cause of
malfunction
Communication be-
tween the ECU and
the meter is not possi-
ble
• Defective meter cou-
pler and ECU cou-
pler
• Open or short cir-
cuit in the wire har-
ness between the
meter and the ECU
• Defective meter
• Defective ECU
Item
11–21
96–107
Displays the atmospheric
pressure.
Displays the intake air pres-
sure.
Displays the intake air tem-
perature.
When engine is cold: Dis-
plays temperature closer to
air temperature.
When engine is hot: Displays
current coolant temperature.
Rear wheel speed pulse
0–999
Fuel system voltage
Approximately 12.0
9-59
Vehicle symptom
Defective meter dis-
play.
Traction control does
not work.
Tool display
Check with throttle valves ful-
ly closed.
Check with throttle valves ful-
ly open.
Compare the actually mea-
sured atmospheric pressure
with the tool display value.
Operate the throttle while
pushing the "
start/engine stop switch. (If
the display value changes,
the performance is OK.)
Compare the actually mea-
sured air temperature with
the tool display value.
Compare the actually mea-
sured coolant temperature
with the tool display value.
Check that the number in-
creases when the rear wheel
is rotated. The number is cu-
mulative and does not reset
each time the wheel is
stopped.
Set the start/engine stop
switch to "
pare the actually measured
battery voltage with the tool
display value. (If the actually
measured battery voltage is
low, recharge the battery.)
Fail-safe system op-
eration
MAP changeover:
State is fixed.
Traction control does
not work.
Meter switch input:
OFF is fixed.
QSS is not carried
out.
Engine brake man-
agement: control
mode is fixed.
Procedure
" side of the
", and then com-