Yamaha 2007 R6 Service

FUEL INJECTION SYSTEM
8-38
Communication error with the meter39Primary injector
(open circuit)Primary injector:
open circuit detected.Able
(depending 
on the 
number of 
faulty cylin-
ders)Able
(depending 
on the 
number of 
faulty cylin-
ders)
40Secondary injector
(open circuit)Secondary injector:
open circuit detected.Able
(depending 
on the 
number of 
faulty cylin-
ders)Able
(depending 
on the 
number of 
faulty cylin-
ders)
41Lean angle sensor
(open or short-circuit)Lean angle sensor:
open or short...

FUEL INJECTION SYSTEM
8-39
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 “Fault code table”.
         
2. Check and repair...

FUEL INJECTION SYSTEM
8-40
EAS27420
DIAGNOSTIC MODE
Setting the diagnostic mode
1. Turn the main switch to “OFF”.
2. Disconnect the wire harness coupler from the fuel pump.
3. Press and hold the “SELECT” and “RESET” buttons, turn the main switch to “ON”, and continue to 
press the buttons for 8 seconds or more.
NOTE:
•All displays on the meter disappear except the odometer/trip meter/fuel reserve trip meter/stopwatch 
display.
•“dIAG” appears on the odometer/trip meter/fuel reserve trip meter/stopwatch...

FUEL INJECTION SYSTEM
8-41
Fault code table
Fault 
code 
No.Symptom Probable cause of malfunctionDiagnostic 
code No.
11No normal signals are re-
ceived from the cylinder 
identification sensor when 
the engine is started or 
while the vehicle is being 
driven.•Open or short circuit in sub-wire-harness 1.
•Open or short circuit in wire harness.
•Defective cylinder identification sensor.
•Malfunction in ECU.
•Improperly installed sensor.—
12No normal signals are re-
ceived from the crankshaft 
position...

FUEL INJECTION SYSTEM
8-42
22Air temperature sensor: 
open or short circuit detect-
ed.•Open or short circuit in wire harness.
•Defective air temperature sensor.
•Malfunction in ECU.
•Improperly installed air temperature sensor.05
23Atmospheric pressure sen-
sor: open or short circuit 
detected.•Open or short circuit in wire harness.
•Defective atmospheric pressure sensor.
•Improperly installed atmospheric pressure 
sensor.
•Malfunction in ECU.02
24No normal signal is re-
ceived from the O
2 sensor.•Open...

FUEL INJECTION SYSTEM
8-43
43Power supply to the injec-
tors and the fuel pump is 
not normal.•Open or short circuit in wire harness.
•Malfunction in ECU.09
44An error is detected while 
reading or writing on EE-
PROM (CO adjustment val-
ue).•Malfunction in ECU.
(The CO adjustment value is not properly 
written on or read from the internal memo-
ry).60
46 Power supply is not normal.•Malfunction in the charging system. 
Refer to “CHARGING SYSTEM” on page 
8-13.—
50Faulty ECU memory. 
(When this...

FUEL INJECTION SYSTEM
8-44
Sensor operation table
Diag-
nostic 
code 
No.Item Meter display Checking method
01 Throttle position sensor (for 
throttle valves) signal 1
•Fully closed position 12–21 Check with throttle valves 
fully closed.
•Fully opened position 97–106 Check with throttle valves 
fully opened.
02 Atmospheric pressure Displays the atmospheric 
pressure.Compare the actually mea-
sured atmospheric pres-
sure with the meter display 
value.
03 Intake air pressure Displays intake air pressure....

FUEL INJECTION SYSTEM
8-45
14 Throttle position sensor (for 
throttle cable pulley) signal 
1
•Fully closed position 12–22 Check with throttle grip fully 
closed.
•Fully opened position 97–107 Check with throttle grip fully 
opened.
15 Throttle position sensor (for 
throttle cable pulley) signal 
2
•Fully closed position 10–24 Check with throttle grip fully 
closed.
•Fully opened position 95–109 Check with throttle grip fully 
opened.
20 Sidestand switch Set ON/OFF the sidestand 
switch (with the...

FUEL INJECTION SYSTEM
8-46
Actuator operation table62 Malfunction history code 
erasure
•No history 00—
•History exists•Displays the total number of 
malfunctions, including the 
current malfunction, that 
have occurred since the 
history was last erased. 
(For example, if there have 
been three malfunctions, 
“03” is displayed.)To erase the history, set the 
engine stop switch from 
“” to “”.
63 Malfunction code reinstate
(for fault code No. 24 and 
40 only)
•No malfunction code 00—
•Malfunction code...

FUEL INJECTION SYSTEM
8-47
33 Cylinder-#4 ignition coilActuates the cylinder-#4 igni-
tion coil five times at one-
second intervals.
Illuminates the engine trou-
ble warning light.Check the spark five times.
•Connect an ignition 
checker.
36 Primary injector #1Actuates the primary injector 
#1 five times at one-second 
intervals.
Illuminates the engine trou-
ble warning light.Check the operating sound 
of the primary injector #1 
five times.
37 Primary injector #2Actuates the primary injector 
#2 five...