Yamaha XV19SX(C), Service Manual

Page: 423 / 494

FUEL INJECTION SYSTEM
7-32
Communication error with the meter
EAS27400
TROUBLESHOOTING METHOD
The engine operation is not normal and the
engine trouble warning light comes on.
1. Check:
• Fault code number
▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼▼▼
a. Check the fault code number displayed on
the meter.
b. Identify the faulty system with the fault code.
Refer to “Self-Diagnostic Function table”.
c. Identify the probable cause of the malfunc-
tion. Refer to “Diagnostic code table”.
▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲▲▲
2. Check and repair the probable cause of mal-
function.
3. Perform ECU reinstatement action.
Refer to “Reinstatement method” of table in
“TROUBLESHOOTING DETAILS”.
4. Turn the main switch to “OFF” and back to
“ON”, then check that no fault code number is
displayed.
NOTE:
If fault codes are displayed, repeat steps (1) to
(4) until no fault code number is displayed.
70 Engine idling stop
Engine has been left idling. (The
ECU automatically stops the en-
gine after 20 minutes if it is left
idling.)
Able Able
Fault
code No.
Item Symptom
Able / un-
able to start
Able / un-
able to
drive
Fault
code No.
Item Symptom
Able / un-
able to start
Able / un-
able to
drive
Er-1
ECU internal malfunc-
tion
(output signal error)
No signals are received from the
ECU.
Unable Unable
Er-2
ECU internal malfunc-
tion
(output signal error)
No signals are received from the
ECU within the specified duration.
Unable Unable
Er-3
ECU internal malfunc-
tion
(output signal error)
Data from the ECU cannot be re-
ceived correctly.
Unable Unable
Er-4
ECU internal malfunc-
tion
(input signal error)
Non-registered data has been re-
ceived from the meter.
Unable Unable
Fault code No. No fault code No.
Check and repair.
Refer to “TROUBLE-
SHOOTING DE-
TAILS” on page 7-40.
Monitor the opera-
tion of the sensors
and actuators in the
diagnostic mode. Re-
fer to “Sensor opera-
tion table” and
“Actuator operation
table”. Check and repair.
Refer to “Self-Diag-
nostic Function ta-
ble”.