Communication Error With Meter - Yamaha XT660R S Service Manual

Fault
Item
code No.
Lean angle cut-off
30 switch (latch up
detected)
Faulty ignition
33
Lean angle cut-off
41 switch (open or short
circuit)
Speed sensor, neutral
switch
42
Fuel system voltage
43 (monitor voltage)
Error in writing the
amount of CO adjust-
44
ment on EEPROM
Vehicle system power
46 supply (monitor volt-
age)
ECU internal malfunc-
tion (memory check
50
error)
Start unable warning
—
Communication error with the meter
Fault
Item
code No.
ECU internal malfunc-
Er-1 tion (output signal
error)
ECU internal malfunc-
Er-2 tion (output signal
error)
ECU internal malfunc-
Er-3 tion (output signal
error)
ECU internal malfunc-
Er-4
tion (input signal error)
FUEL INJECTION SYSTEM
Symptom
The motorcycle has over-
turned.
Open circuit is detected in the
primary lead of the ignition
coil.
Open or short circuit is
detected.
No normal signals are
received from the speed sen-
sor or an open or short circuit
is detected in the neutral
switch.
The ECU is unable to monitor
the battery voltage (open cir-
cuit in the wire to the ECU).
An error is detected while
reading or writing on
EEPROM (CO adjustment
value).
Power supply to the fuel injec-
tion system relay is not nor-
mal.
Faulty ECU memory. When
this malfunction is detected,
the code number might not
appear on the meter.
Relay is not turned ON even if
the crank signal is input while
the start switch is turned ON.
When the start switch is turned
ON while an error is detected
with the fault code of No. 12,
19, 33, 41 or 50.
Symptom
No signals are received from
the ECU.
No signals are received from
the ECU within the specified
duration.
Data from the ECU cannot be
received correctly.
Non-registered data has been
received from the meter.
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Fail-safe action
—
—
—
• Fixes the gear to the top
gear.
• Fixes the battery voltage
to 12 V.
—
—
—
• Engine trouble warning
light flashes when the start
switch is turned ON.
Fail-safe action
—
—
—
—
FI
Startability Driveability
No No
No No
No No
Yes Yes
Yes Yes
Yes Yes
Yes Yes
No Yes
No No
Startability Driveability
No No
No No
No No
No No