Yamaha FZS6W 07 User Manual

COOLING SYSTEM
8-30 

FUEL INJECTION SYSTEM
8-31
EAS27330
FUEL INJECTION SYSTEM
EAS27340
CIRCUIT DIAGRAM 

FUEL INJECTION SYSTEM
8-32
1. Main switch
5. Fuel injection system fuse
6. Main fuse
9. Battery
10.Starting circuit cut-off relay
11.Sidestand switch
12.Neutral switch
13.Fuel pump
14.Throttle position sensor
15.Intake air pressure sensor
16.O
2 sensor
17.Lean angle sensor
18.Crankshaft position sensor
19.Intake air temperature sensor
20.Coolant temperature sensor
21.ECU (engine control unit)
22.Injector #1
23.Injector #2
24.Injector #3
25.Injector #4
27.Speed sensor
28.Cylinder-#1/#4 ignition coil...

FUEL INJECTION SYSTEM
8-33
EAS27350
ECU SELF-DIAGNOSTIC FUNCTION
The ECU is equipped with a self-diagnostic function in order to ensure that the fuel injection system 
is operating normally. If this function detects a malf unction in the system, it immediately operates the 
engine under substitute characteristics and illuminates the engine trouble warning light to alert the 
rider that a malfunction has occurred in the syst em. Once a malfunction has been detected, a fault 
code is stored in the memory...

FUEL INJECTION SYSTEM
8-34
EAS27362
FAIL-SAFE ACTIONS (SUBSTITUTE CHARACTERISTICS OPERATION CONTROL)
If the ECU detects an abnormal signal from a sensor while the vehicle is being driven, the ECU illu-
minates the engine trouble warning light and provi des the engine with alternate operating instruc-
tions that are appropriate for the type of malfunction.
When an abnormal signal is received from a sensor, the ECU processes the specified values that 
are programmed for each sensor in order to provide the...

FUEL INJECTION SYSTEM
8-35
Communication error with the meter34
Ignition coil (#2, #3)
(faulty ignition) Malfunction detected in the pri-
mary wire of the ignition coil (#2, 
#3). Able
(depending 
on the num- ber of faulty  cylinders) Able
(depending 
on the num- ber of faulty  cylinders)
41 Lean angle sensor
(open or short circuit) Lean angle sensor-open or short 
circuit detected.
Unable Unable
42 Speed sensor
Neutral switch No normal signals are received 
from the speed sensor.
Open or short circuit...

FUEL INJECTION SYSTEM
8-36
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 system with the malfunction.  Refer to “Self-Diagnostic Function table”.
c. Identify the probable cause of malfunction.  Refer to “Diagnostic monitoring code 
table”.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
2. Checking and repair the probable...

FUEL INJECTION SYSTEM
8-37
EAS27411
DIAGNOSTIC MODE
Setting the diagnostic mode
1. Turn the main switch to “OFF” and set the engine stop switch to “ ”.
2. Disconnect the wire harness coupler from the fuel pump.
3. Simultaneously 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 clock and tripmeter displays.
 “dIAG” appears on the clock LCD.
4. Press the “SELECT”...

FUEL INJECTION SYSTEM
8-38
NOTE:
If the engine stop switch is set to “ ”, set it to “ ”, and then set it to “ ” again.
9. Turn the main switch to “OFF” to cancel the diagnostic mode.
Diagnostic code tableFault code  No. Symptom Probable cause of malfunction
Diagnostic 
code No.
12 No normal signals are 
received from the crank-
shaft position sensor.  Open or short circuit in wire harness.
 Defective crankshaft position sensor.
 Malfunction in pickup rotor.
 Malfunction in ECU.
 Improperly...

FUEL INJECTION SYSTEM
8-39
30Latch up detected.
No normal signal is 
received from the lean 
angle sensor.  The vehicle has overturned.
 Defective lean angle sensor.
 Malfunction in ECU.
 Improperly installed lean angle sensor.
08
33 Malfunction detected in the 
primary wire of the ignition 
coil (#1and #4).  Open or short circuit in wire harness.
 Malfunction in ignition coil.
 Malfunction in ECU.
 Malfunction in a component of ignition cut-
off circuit system. 30
34 Malfunction detected in the...