FUEL INJECTION SYSTEM
8-53
Sensor operation table
Er-2
No signals are received
from the ECU within the
specified duration.
• Open or short circuit in front cowling wire
harness.
• Open or short circuit in wire harness.
• Malfunction in meter assembly.
• Malfunction in ECU.
—
Er-3
Data from the ECU cannot
be received correctly.
• Open or short circuit in front cowling wire
harness.
• Open or short circuit in wire harness.
• Malfunction in meter assembly.
• Malfunction in ECU.
—
Er-4
Non-registered data has
been received from the
meter.
• Open or short circuit in front cowling wire
harness.
• Open or short circuit in wire harness.
• Malfunction in meter assembly.
• Malfunction in ECU.
—
Diag-
nostic
code
No.
Item Meter display Checking method
01 Throttle angle
• Fully closed position 15–17 Check with throttle fully
closed.
• Fully opened position 97–100 Check with throttle fully
open.
03 Pressure difference
(atmospheric pressure and
intake air pressure)
Displays the intake air pres-
sure.
Set the engine stop switch
to “”, and then push the
start switch “”. (If the dis-
play value changes, the
performance is OK.)
05 Intake air temperature Displays the intake air tem-
perature.
Compare the actually mea-
sured intake air tempera-
ture with the meter display
value. (*1)
06 Coolant temperature Displays the coolant temper-
ature.
Compare the actually mea-
sured coolant temperature
with the meter display val-
ue.
07 Vehicle 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.
Fault
code
No.
Symptom Probable cause of malfunction
Diagnostic
code No.
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