Yamaha XV19SW Service Manual page 381

Fault
code Symptom
No.
No signals are received
Er-2 from the ECU within the
specified duration.
Data from the ECU cannot
Er-3
be received correctly.
Non-registered data has
Er-4 been received from the
meter.
Sensor operation table
Diag-
nostic
Item
code
No.
01 Throttle angle
• Fully closed position
• Fully opened position
03 Pressure difference
(atmospheric pressure and
cylinder-#1 intake air pres-
sure)
04 Pressure difference
(atmospheric pressure and
cylinder-#2 intake air pres-
sure)
05 Air temperature
07 Vehicle speed pulse
08 Lean angle sensor
• Upright
• Overturned
FUEL INJECTION SYSTEM
Probable cause of malfunction
• Improper connection in wire harness.
• Malfunction in meter.
• Malfunction in ECU.
• Improper connection in wire harness.
• Malfunction in meter.
• Malfunction in ECU.
• Improper connection in wire harness.
• Malfunction in meter.
• Malfunction in ECU.
Meter display
12–22
87–107
Displays the cylinder-#1 in-
take air pressure.
Displays the cylinder-#2 in-
take air pressure.
Displays the air temperature. Compare the actually mea-
0–999
0.4–1.4
3.7–4.4
7-37
Diagnostic
code No.
—
—
—
Checking method
Check with throttle fully
closed.
Check with throttle fully
open.
Set the engine stop switch
to " ", and then push the
start switch " ". (If the dis-
play value changes, the
performance is OK.)
Set the engine stop switch
to " ", and then push the
start switch " ". (If the dis-
play value changes, the
performance is OK.)
sured air temperature with
the meter display value.
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.
Remove the lean angle
sensor and incline it more
than 65 degrees.