Yamaha FZS6W 07 User Manual

							
FUEL INJECTION SYSTEM
8-40
Sensor operation tableEr-3
Data from the ECU cannot 
be received correctly.  Open or short circuit in communication line.
 Malfunction in meter unit.
 Malfunction in ECU.
—
Er-4 Non-registered data has 
been received from the 
meter.  Open or short circuit in communication line.
 Malfunction in meter unit.
 Malfunction in ECU.
—
Diag-
nostic  code  No. Item Meter display Checking method
01 Throttle angle
 Fully closed position 15–17 Check with throttle fully 
closed.
 Fully opened position 97–100 Check with throttle fully  open.
03 Pressure difference
(intake air pressure)
Displays the intake air pres-
sure. Turn On the engine stop 
switch, then operate the 
throttle while pressing the 
start switch. (If the display 
value changes, the perfor-
mance is OK.)
05 Intake air temperature Displays the intake air tem-
perature. Compare the actually mea-
sured intake air tempera-
ture with the meter display 
value. (*)
06 Coolant temperature Displays the coolant tempera-
ture. Compare the actually mea-
sured coolant temperature 
with the meter display 
value.
07 Vehicle speed pulse 0–999 Check that the number 
changes (integrating) when 
the rear wheels are rotated.
08 Lean angle sensor Remove the lean angle 
sensor and incline it more 
than 65 degrees.
 Upright 0.4–1.4
 Overturned 3.8–4.2
09 Fuel system voltage
(battery voltage)
Approximately 12.0 Compare with the actually 
measured battery voltage. 
(If the battery voltage is 
lower, perform recharging.)
20 Sidestand  switch Turn ON/OFF the Sidestand 
switch.
 Stand retracted ON
 Stand extended OFF
21 Neutral switch Perform the shift operation 
of transmission.
 Neutral ON
 In gear OFF
Fault 
code  No. Symptom Probable cause of malfunction
Diagnostic 
code No. 
						

							
FUEL INJECTION SYSTEM
8-41
* If it is not possible to check the intake temperature, use the ambient temperature as reference (use 
the compared values for reference). 60
EEPROM fault code display
—
Not fault 00
 Fault detected 01 to 02 (Fault detection cyl-
inder)
01: #1 and #4
02: #2 and #3
 (If plural cylinders are defective, the display alter-
nates every two seconds.)
61 Malfunction history code 
display
—
 No history 00
 History exists 12-50 (Fault detection code)
 (If code numbers more than one are detected, the dis-
play alternates every two 
seconds to show all the 
detected code numbers. 
When all code numbers are 
shown, the display repeats 
the same process.)
62 Malfunction history code 
erasure
 No history 00 —
 History exists 00–17 (Memory numbers of 
the fault detection) To erase the history, turn 
ON the engine stop switch.
63 Malfunction code reinstate
 No malfunction code 00 —
 Malfunction code exists Fault code 24
 (If more than one code 
number is detected, the dis-
play changes every two 
seconds to show all the 
detected code numbers are 
shown, the display repeats.) To reinstate, set the engine 
stop switch to “ ”.
70 Control number 00–255 —
Diag-
nostic  code 
No. Item Meter display Checking method 
						

							
FUEL INJECTION SYSTEM
8-42
Actuator operation tableDiag-
nostic  code 
No. Item Actuation Checking method
30 Ignition coil #1/#4 Actuates the ignition coils #1, 
#4 for five times every sec-
ond.
Illuminates the engine trou-
ble warning light.Check the spark five times.
 Connect an ignition 
checker.
31 Ignition coil #2/#3 Actuates the ignition coils #2, 
#3 for five times every sec-
ond.
Illuminates the engine trou-
ble warning light.Check the spark five times.
 Connect an ignition 
checker.
36 Injector #1/#4 Actuates the injector #1/#4 
for five times every second.
Illuminates the engine trou-
ble warning light.Check the operating sound 
of the injector #1/#4 five 
times.
37 Injector #2/#3 Actuates the injector #2/#3 
for five times every second.
Illuminates the engine trou-
ble warning light.Check the operating sound 
of the injector #2/#3 five 
times.
48 AI system solenoid Actuates the AI system sole-
noid for five times every sec-
ond.
Illuminates the engine trou-
ble warning light.Check the operating sound 
of the AI system solenoid 
five times.
50 Fuel injection system relay Actuates the fuel injection 
system relay for five times 
every second.
Illuminates the engine trou-
ble warning light.
(The engine trouble warning 
light is OFF when the relay is 
ON, and the engine trouble 
warning light is ON when the 
relay is OFF).Check the operating sound 
of the fuel injection system 
relay five times.
51 Radiator fan motor relay Actuates the radiator fan 
motor relay for five cycles 
every five-second. (ON 2 sec-
onds, OFF 3 seconds)
Illuminates the engine trou-
ble warning light.Check the operating sound 
of the Radiator fan motor 
relay five times.
52 Headlight relay Actuates the headlight relay 
for five times every five-sec-
ond. (ON 2 seconds, OFF 3 
seconds)
Illuminates the engine trou-
ble warning light.Check the operating sound 
of the headlight relay five 
times. 
						

							
FUEL INJECTION SYSTEM
8-43
EAS27451
TROUBLESHOOTING DETAILS
This section describes the measures per fault code number displayed on the meter. Check and ser-
vice the items or components that are the probab le cause of the malfunction following the order 
given.
After the check and service of the malfunctioning part has been completed, reset the meter display 
according to the reinstatement method.
Fault code No.:
Code number displayed on the meter when the engine failed to work normally. Refer to “Self-Diag-
nostic Function table”.
Diagnostic code No.:
Diagnostic code number to be used when the diag nostic mode is operated. Refer to DIAGNOSTIC 
MODE on page 8-37.
Fault code No. 12 Symptom No normal signals are received from the crankshaft posi-
tion sensor.
Diagnostic code No.
Order Item/components and probable 
cause Check or maintenance job Reinstate-
ment method
1 Installed condition of crankshaft posi-
tion sensor Check the installed area for 
looseness or pinching.Cranking the 
engine.
2 Connected state of connector
 Crankshaft position sensor coupler
 Main wire harness ECU coupler
 Check the coupler for any pins 
that may have pulled out.
 Check the locking condition of 
the coupler.
 If there is a malfunction, repair it  and connect it securely.
3 Open or short circuit in wire harness 
and/or sub lead.
 Repair or replace if there is an 
open or short circuit.
 Between the crankshaft position  sensor coupler and ECU cou-
pler.
(Gray–Gray)
(Black/Blue–Black/Blue)
4 Defective crankshaft position sensor.  Replace if defective.
Refer to CHECKING THE 
CRANKSHAFT POSITION 
SENSOR on page 8-75.
Fault code No. 13 Symptom Intake air pressure sensor-open or short circuit detected.
Diagnostic code No. 03 Intake air pressure sensor
Order Item/components and probable 
cause Check or maintenance job Reinstate-
ment method
1 Connected state of connector
 Intake air pressure sensor coupler
 Main wire harness ECU coupler
 Sub-wire harness coupler  Check the coupler for any pins 
that may have pulled out.
 Check the locking condition of  the coupler.
 If there is a malfunction, repair it  and connect it securely. Turning the 
main switch 
ON. 
						

							
FUEL INJECTION SYSTEM
8-44
2Open or short circuit in wire harness 
and/or sub lead.
 Repair or replace if there is an 
open or short circuit.
 Between intake air pressure 
sensor coupler and ECU cou-
pler
(Black/Blue–Black/Blue)
(Pink/White–Pink/White)
(Blue–Blue) Turning the 
main switch 
ON.
3 Defective intake air pressure sensor  Execute the diagnostic monitor-
ing mode. (Code No.03)
 Replace if defective. Refer to CHECKING THE 
INTAKE AIR PRESSURE SEN-
SOR on page 8-81.
Fault code No. 14 Symptom A Intake air pressure sensor-pipe system malfunction 
(clogged or detached hose).
B Intake air pressure sensor-open or short circuit  detected.
C Stuck throttle position sensor detected.
Diagnostic code No. 03 Intake air pressure sensor
Order Item/components and probable 
cause Check or maintenance job
Reinstate-
ment method
1 Intake air pressure sensor hose  Check the intake air pressure 
sensor hose condition.
 Repair or replace the sensor  hose. Starting the 
engine and 
operating it at 
idle.
2 Intake air pressure sensor malfunction 
at intermediate electrical potential.
 Check and repair the connec-
tion.
 Replace it if there is a malfunc- tion.
3 Connected state of connector
 Intake air pressure sensor coupler
 Main wire harness ECU coupler
 Check the coupler for any pins 
that may have pulled out.
 Check the locking condition of  the coupler.
 If there is a malfunction, repair it 
and connect it securely.
4 Defective intake air pressure sensor  Execute the diagnostic monitor-
ing mode. (Code No.03)
 Replace if defective.
Refer to CHECKING THE 
INTAKE AIR PRESSURE SEN-
SOR on page 8-81.
Fault code No. 13 Symptom Intake air pressure sensor-open or short circuit detected.
Diagnostic code No. 03 Intake air pressure sensor
Order Item/components and probable 
cause Check or maintenance job
Reinstate-
ment method 
						

							
FUEL INJECTION SYSTEM
8-45
Fault code No. 15 Symptom Throttle position sensor-open or short circuit detected.
Diagnostic code No. 01 Throttle position sensor
Order Item/components and probable 
cause Check or maintenance job Reinstate-
ment method
1 Installed condition of throttle position 
sensor. Check the installed area for 
looseness or pinching.Turning the 
main switch 
ON.
2 Connected state of connector
 Throttle position sensor coupler
 Main wire harness ECU coupler
 Check the coupler for any pins 
that may have pulled out.
 Check the locking condition of 
the coupler.
 If there is a malfunction, repair it  and connect it securely.
3 Open or short circuit in wire harness 
and/or sub lead.
 Repair or replace if there is an 
open or short circuit.
 Between throttle position sensor  coupler and ECU coupler
(Black/Blue–Black/Blue)
(Yellow–Yellow)
(Blue–Blue)
4 Throttle position sensor lead wire 
open circuit output voltage check.
 Check for open circuit and 
replace the throttle position sen-
sor.
(Black/Blue–Yellow)
Open circuit  item Output voltage
Ground wire 
open circuit 5 V
Output wire 
open circuit 0 V
Power s u pp l y 
wire open circuit 0 V
5 Defective throttle position sensor
.  Execute the diagnostic monitor-
ing mode. (Code No.01)
 Replace if defective.
Refer to CHECKING THE 
THROTTLE POSITION SEN-
SOR on page 8-79.
Fault code No. 16 Symptom A Stuck throttle position sensor detected.
Diagnostic code No. 01 Throttle position sensor
Order Item/components and probable 
cause Check or maintenance job Reinstate-
ment method
1 Installed condition of throttle position 
sensor. Check the installed area for 
looseness or pinching.Starting the 
engine and 
operating it at 
idle, and then 
by racing it.
2 Defective throttle position sensor
.  Execute the diagnostic monitor-
ing mode. (Code No.01)
 Replace if defective.
Refer to CHECKING THE 
THROTTLE POSITION SEN-
SOR on page 8-79. 
						

							
FUEL INJECTION SYSTEM
8-46
Fault code No. 19 SymptomOpen circuit is detected in the input line from the side-
stand switch to the ECU.
Diagnostic code No. 20 Sidestand switch
Order Item/components and probable 
cause Check or maintenance job
Reinstate-
ment method
1 Connected state of connector
 Main wire harness ECU coupler (No. 
13 and 30 pin, black)
 Alarm coupler  Check the coupler for any pins 
that may have pulled out.
 Check the locking condition of 
the coupler.
 If there is a malfunction, repair it  and connect it securely. If the transmis-
sion is in gear, 
retracting the 
sidestand.
If the transmis-
sion is in neu-
tral, 
reconnecting 
the wiring.
2 Open or short circuit in wire harness 
or sub lead.
 Repair or replace if there is an 
open or short circuit.
 Between ECU and sidestand  switch
(Black/Red–Blue/Green)
3 Defective sidestand switch  Execute the diagnostic monitor-
ing mode. (Code No.20)
 Replace if defective.
Refer to CHECKING THE 
SWITCHES on page 8-63.
Fault code No. 21 Symptom Coolant temperature sensor-open or short circuit 
detected.
Diagnostic code No. 06 Coolant temperature sensor
Order Item/components and probable 
cause Check or maintenance job Reinstate-
ment method
1 Installed condition of coolant tempera-
ture sensor Check the installed area for 
looseness or pinching.Turning the 
main switch 
ON.
2 Connected state of connector
 Coolant temperature sensor coupler
 Main wire harness ECU coupler
 Check the coupler for any pins 
that may have pulled out.
 Check the locking condition of  the coupler.
 If there is a malfunction, repair it 
and connect it securely.
3 Open or short circuit in wire harness 
and/or sub lead.
 Repair or replace if there is an 
open or short circuit.
 Main wire harness
(Black/Blue–Black/Blue)
(Green/White–Green/White)
4 Defective coolant temperature sens
or.  Execute the diagnostic monitor-
ing mode. (Code No.06)
 Replace if defective. Refer to CHECKING THE 
COOLANT TEMPERATURE 
SENSOR on page 8-79. 
						

							
FUEL INJECTION SYSTEM
8-47
Fault code No. 22 SymptomIntake air temperature sensor-open or short circuit 
detected.
Diagnostic code No. 05 Intake air temperature sensor
Order Item/components and probable 
cause Check or maintenance job
Reinstate-
ment method
1 Installed condition of intake air tem-
perature sensor Check the installed area for 
looseness or pinching.Turning the 
main switch 
ON.
2 Connected state of connector
 Intake air temperature sensor cou-
pler
 Main wire harness ECU coupler  Check the coupler for any pins 
that may have pulled out.
 Check the locking condition of  the coupler.
 If there is a malfunction, repair it 
and connect it securely.
3 Open or short circuit in wire harness 
and/or sub lead.
 Repair or replace if there is an 
open or short circuit.
 Main wire harness
(Black/Blue–Black/Blue)
(Brown/White–Brown/White)
4 Defective intake air temperature sen-
sor.
 Execute the diagnostic monitor-
ing mode. (Code No.05)
 Replace if defective. Refer to CHECKING THE 
INTAKE AIR TEMPERATURE 
SENSOR on page 8-81.
Fault code No. 24 Symptom No normal signal is received from the O
2 sensor.
Diagnostic code No.
Order Item/components and probable 
cause Check or maintenance job Reinstate-
ment method
1 Installed condition of O
2 sensor Check the installed area for 
looseness or pinching. Starting the 
engine, warm-
ing it up until 
the coolant 
temperature is 
60
°C (140 °F) 
or more, and 
then running it 
between 2000–
3000 r/min until 
the engine 
trouble indica-
tor turns off.
2
Connected state of connector
O
2 sensor coupler
 Main wire harness ECU coupler
 Sub-wire harness coupler  Check the coupler for any pins 
that may have pulled out.
 Check the locking condition of 
the coupler.
 If there is a malfunction, repair it  and connect it securely.
3 Open or short circuit in wire harness 
and/or sub lead.
 Repair or replace if there is an 
open or short circuit.
 Main wire harness (Gray/Green–Gray/Green)
(Black/Blue–Black/Blue)
(Red/White–Red/White)
(Pink/Black–Pink/Black)
4 Check fuel pressure. Refer to CHECKING THE FUEL 
PRESSURE on page 7-6.
5 Defective O
2 sensor Replace if defective. 
						

							
FUEL INJECTION SYSTEM
8-48
Fault code No. 30 SymptomLatch up detected.
No normal signal is received from the lean angle sensor.
Diagnostic code No. 08 Lean angle sensor
Order Item/components and probable 
cause Check or maintenance job
Reinstate-
ment method
1 The vehicle has overturned. Raise the vehicle upright. Turning the  main switch ON 
(however, the 
engine cannot 
be restarted 
unless the 
main switch is 
first turned 
OFF).
2
Installed state of the lean angle sen-
sor. Check the installed direction and 
condition of the sensor.
3 Defective lean angle sensor.  Ex
ecute the diagnostic monitor-
ing mode. (Code No.08)
 Replace if defective. Refer to CHECKING THE 
LEAN ANGLE SENSOR on 
page 8-75.
Fault code No. 33 Symptom Malfunction detected in the primary wire of the ignition 
coil (#1/#4).
Diagnostic code No. 30 Ignition coil (#1/#4)
Order Item/components and probable 
cause Check or maintenance job Reinstate-
ment method
1 Connected state of connector
 Ignition coil primary side coupler
(Orange/Black)
 Main wire harness ECU coupler  Check the coupler for any pins 
that may have pulled out.
 Check the locking condition of  the coupler.
 If there is a malfunction, repair it  and connect it securely. Starting the 
engine and 
operating it at 
idle.
2 Open or short circuit in wire harness 
and/or sub lead.
 Repair or replace if there is an 
open or short circuit.
 Between ignition coil coupler  (#1/#4) and ECU coupler/main 
wire harness.
(Orange/Black–Orange/Black)
(Red/Black–Red/Black)
3 Defective ignition coil (#1/#4) 
Execute the diagnostic monitor-
ing mode. (Code No.30)
 Test the primary and secondary  coils for continuity.
 Replace if defective.
Refer to CHECKING THE 
IGNITION COILS on page 8-
74. 
						

							
FUEL INJECTION SYSTEM
8-49
Fault code No. 34 SymptomMalfunction detected in the primary wire of the ignition 
coil (#2/#3).
Diagnostic code No. 31 Ignition coil (#2/#3)
Order Item/components and probable 
cause Check or maintenance job
Reinstate-
ment method
1 Connected state of connector
 Ignition coil primary side coupler
(Gray/Black)
 Main wire harness ECU coupler  Check the coupler for any pins 
that may have pulled out.
 Check the locking condition of 
the coupler.
 If there is a malfunction, repair it  and connect it securely. Starting the 
engine and 
operating it at 
idle.
2 Open or short circuit in wire harness 
and/or sub lead.
 Repair or replace if there is an 
open or short circuit.
 Between ignition coil coupler  (#2/#3) and ECU coupler/main 
wire harness.
(Gray/Black–Gray/Black)
(Red/Black–Red/Black)
3 Defective ignition coil (#2/#3) 
Execute the diagnostic monitor-
ing mode. (Code No.31)
 Test the primary and secondary  coils for continuity.
 Replace if defective. Refer to CHECKING THE 
IGNITION COILS on page 8-
74.
Fault code No. 41 Symptom Lean angle sensor-open or short circuit detected.
Diagnostic code No. 08 Lean angle sensor
Order Item/components and probable 
cause Check or maintenance job
Reinstate-
ment method
1 Connected state of connector
 Lean angle sensor coupler
 Main wire harness ECU coupler
 Check the coupler for any pins 
that may have pulled out.
 Check the locking condition of  the coupler.
 If there is a malfunction, repair it 
and connect it securely. Turning the 
main switch 
ON.
2 Open or short circuit in wire harness 
and/or sub lead.
 Repair or replace if there is an 
open or short circuit.
 Between lean angle sensor 
coupler and ECU coupler.
(Black/Blue–Black/Blue)
(Yellow/Green–Yellow/Green)
(Blue–Blue)
3 Defective lean angle sensor  Execute the diagnostic monitor-
ing mode. (Code No.08)
 Replace if defective.