Yamaha YZFR6X(C) 2008 Service Manual page 366

Fault
code Symptom
No.
No normal signals are
received from the speed
sensor.
42
Neutral switch:
open or short circuit
detected.
Power supply to the injec-
43 tors and the fuel pump is
not normal.
An error is detected while
reading or writing on
44
EEPROM (CO adjustment
value).
46 Power supply is not normal.
Faulty ECU memory. (When
this malfunction is detected
50 in the ECU, the fault code
number might not appear
on the meter.)
Throttle position sensor (for
throttle cable pulley):
open or short circuit
59 detected.
Throttle position sensor (for
throttle cable pulley) cou-
pler connection is loose.
Throttle servo motor:
open or short circuit
detected.
60 Defective throttle servo
motor.
Malfunction in ECU (servo
motor driving system).
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.
FUEL INJECTION SYSTEM
Probable cause of malfunction
• Open circuit in wire harness.
• Malfunction in speed sensor.
• Malfunction in ECU.
• Open circuit in wire harness.
• Malfunction in neutral switch.
• Malfunction in ECU.
• Open or short circuit in wire harness.
• Malfunction in ECU.
• Malfunction in ECU.
(The CO adjustment value is not properly
written on or read from the internal mem-
ory).
• Malfunction in the charging system.
Refer to "CHARGING SYSTEM" on page 8-
13.
• Malfunction in ECU.
(The program and data are not properly
written on or read from the internal mem-
ory.)
• Open or short circuit in wire harness.
• Defective throttle position sensor.
• Improperly installed throttle position sensor.
• Malfunction in ECU.
• Open or short circuit in wire harness.
• Defective throttle servo motor (potentiome-
ter circuit).
• Stuck throttle servo motor (mechanism).
• Stuck throttle servo motor (motor).
• Malfunction in ECU.
• 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.
8-43
Diagnostic
code No.
07
21
09
60
—
—
14
15
01
—
—
—