Yamaha Fz6 N Service Manual

FUEL INJECTION SYSTEM
8-48
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 ...

FUEL INJECTION SYSTEM
8-49
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...

FUEL INJECTION SYSTEM
8-50
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,...

FUEL INJECTION SYSTEM
8-51
Fault code No. 42 SymptomA. No normal signals are received from the rear wheel 
sensor. (with ABS)
B. Open or short circuit is detected in the neutral switch.
Diagnostic code No. A 07 Speed sensor
B21Neutral switch
Order Item/components and probable 
cause Check or maintenance job Reinstate-
ment method
A-1 Connected state of connector (with out 
ABS)
 Speed sensor coupler
 Main wire harness ECU coupler
Connections (with ABS)
 Rear wheel sensor coupler
 Wire harness ECU...

FUEL INJECTION SYSTEM
8-52
B-1Connected state of connector
 Neutral switch 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 the coupler 
securely. Starting the 
engine, and 
inputting the 
vehicle speed 
signals by 
operating the 
vehicle at a 20 
to 30 km/h.
B-2 Open or short circuit in neutral switch 
lead.
 Repair or replace if there is an 
open or...

FUEL INJECTION SYSTEM
8-53
Fault code No. 44 SymptomAn error is detected while reading or writing on EEPROM
(CO adjustment value).
Diagnostic code No. 60 EEPROM fault cylinder No.
Order Item/components and probable 
cause Check or maintenance job Reinstate-
ment method
1 Malfunction in ECU  Set the faulty cylinders exhaust 
gas volume.
1  Execute the diagnostic mode (Code No. 60) to check the 
faulty cylinder number. (If mul-
tiple cylinders are defective, 
the numbers of the faulty cyl-
inders are...

FUEL INJECTION SYSTEM
8-54
Fault code No. 46 Symptom Power supply to the FI system relay is not normal.Diagnostic monitor- ing code No. ——
Order Item/components and probable 
cause Check or maintenance job Reinstate-
ment method
1 Connected state of connector.
 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...

FUEL INJECTION SYSTEM
8-55
Fault code No. Er-1 Symptom No signals are received from the ECU.
Diagnostic code No. — —
Order Item/components and probable 
cause Check or maintenance job
Reinstate-
ment method
1 Connected state of connector
 Main wire harness ECU coupler
 Main wire harness meter 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....

FUEL INJECTION SYSTEM
8-56
Fault code No. Er-3 Symptom Data from the ECU cannot be received correctly.
Diagnostic code No. — —
Order Item/components and probable 
cause Check or maintenance job
Reinstate-
ment method
1 Connected state of connector
 Main wire harness ECU coupler
 Main wire harness meter 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...

FUEL PUMP SYSTEM
8-57
EAS27550
FUEL PUMP SYSTEM
EAS27560
CIRCUIT DIAGRAM
ChB
P
G/L Y/L R/GLgB/W
G/L
Y/L
R/G
G/R
G/RLgB/W
R/B
R/LG/BR/LG/BR/LG/B
R/B R/L
G/B
R/B23R/L
R/L
R/LR/BR/L24
25
26
27
R/WBr/RR/W
Br/R
15L
Y
B/L
D
G/W
G/WD
Br/W Br/W D
P/W P/W D
B/L B/L
B/LBr/W
LB/LP/W
16
2021
B/LG/WB/L B/L
L
A
B/W A
Y/L D
YY
C
LL C
R/L
C G/B
C
R/B
B/L
22
R/L
B/L
G/WBr/WYP/WB/L
G/WBr/WYP/WB/L
18
L
L
P/W
P/W
R/B
R/L
G/B
L
B/Y
B/LY/GL
B/R
Y/B
W/Y B/L
B/L
L G/Y
R/B R/L
G/B L
B/L35
3637
37
Y/L
19Gy
B
Gy B/L
R/B
17B
B
L...