Yamaha XVS13AWC Service Manual page 362

Fault
code Symptom
No.
No signals are received
Er-1
from the ECU.
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
front cylinder intake air
pressure)
04 Pressure difference
(atmospheric pressure and
rear cylinder intake air
pressure)
05 Air temperature
06 Coolant temperature
FUEL INJECTION SYSTEM
Probable cause of malfunction
• Open or short circuit in wire harness.
• Malfunction in meter.
• Malfunction in ECU.
• Defective wire connection of the ECU cou-
pler.
• 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 front cylinder in-
take air pressure.
Displays the rear cylinder in-
take air pressure.
Displays the air temperature. Compare the actually mea-
Displays the coolant temper-
ature.
8-40
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 intake air tempera-
ture with the meter display
value.
Compare the actually mea-
sured coolant temperature
with the meter display val-
ue.