Yamaha Yzf R1 2007 Manual

							FUEL INJECTION SYSTEM
8-52
Fault code No. 30 SymptomLatch up detected.
No normal signal is received from the lean angle sensor.
Diagnostic code No. 08 Lean angle sensor
Orde
rItem/components and probable 
causeCheck or maintenance jobReinstatement 
method
1 The vehicle has overturned. Raise the vehicle upright. Turning the 
main switch to 
“ON” (however, 
the engine can-
not be restarted 
unless the main 
switch is first 
turned to 
“OFF”). 2 Installed state of the lean angle sen-
sor.Check the installed direction and 
condition of the sensor.
3 Defective lean angle sensor.  Execute the diagnostic mode. 
(Code No.08)
 Replace if defective.
Refer to CHECKING THE 
LEAN ANGLE SENSOR on 
page 8-92.
Fault code No. 33 SymptomOpen circuit detected in the primary lead of the cylinder- 
#1 ignition coil.
Diagnostic code No. 30 Cylinder-#1 ignition coil
Orde
rItem/components and probable 
causeCheck or maintenance jobReinstatement 
method
1 Connections
 Cylinder-#1 ignition coil coupler
 Main wire harness ECU coupler
 Sub-wire harness 1 coupler Check the coupler for any pins 
that may be pulled out.
 Check the locking condition of 
the coupler.
 If there is a malfunction, repair it 
and connect coupler securely.Cranking the 
engine. 
(Connect the 
cylinder-#1 igni-
tion coil cou-
pler.)
2 Open or short circuit in wire harness 
and/or sub-wire harness 1. Repair or replace if there is an 
open or short circuit.
 Between cylinder-#1 ignition 
coil coupler and ECU coupler.
(Red/Black–Red/Black)
(Orange–Orange)
3 Defective cylinder-#1 ignition coil.  Execute the diagnostic mode. 
(Code No.30)
 Test the primary and secondary 
coils for continuity.
 Replace if defective.
Refer to CHECKING THE 
IGNITION COILS on page 8-
91. 
						

							FUEL INJECTION SYSTEM
8-53
Fault code No. 34 SymptomOpen circuit detected in the primary lead of the cylinder- 
#2 ignition coil.
Diagnostic code No. 31 Cylinder-#2 ignition coil
Orde
rItem/components and probable 
causeCheck or maintenance jobReinstatement 
method
1 Connections
 Cylinder-#2 ignition coil coupler
 Main wire harness ECU coupler
 Sub-wire harness 1 coupler Check the couplers for any pins 
that may be pulled out.
 Check the locking condition of 
the couplers.
 If there is a malfunction, repair it 
and connect the coupler 
securely.Cranking the 
engine. 
(Connect the 
cylinder-#2 igni-
tion coil cou-
pler.)
2 Open or short circuit in wire harness 
and/or sub-wire harness 1. Repair or replace if there is an 
open or short circuit.
 Between cylinder-#2 ignition 
coil coupler and ECU coupler.
(Red/Black–Red/Black)
(Gray/Red–Gray/Red)
3 Defective cylinder-#2 ignition coil.  Execute the diagnostic mode. 
(Code No.31)
 Test the primary and secondary 
coils for continuity.
 Replace if defective.
Refer to CHECKING THE 
IGNITION COILS on page 8-
91. 
						

							FUEL INJECTION SYSTEM
8-54
Fault code No. 35 SymptomOpen circuit detected in the primary lead of the cylinder- 
#3 ignition coil.
Diagnostic code No. 32 Cylinder-#3 ignition coil
Orde
rItem/components and probable 
causeCheck or maintenance jobReinstatement 
method
1 Connections
 Cylinder-#3 ignition coil coupler
 Main wire harness ECU coupler
 Sub-wire harness 1 coupler Check the couplers for any pins 
that may have pulled out.
 Check the locking condition of 
the couplers.
 If there is a malfunction, repair it 
and connect the coupler 
securely.Cranking the 
engine. 
(Connect the 
cylinder-#3 igni-
tion coil cou-
pler.)
2 Open or short circuit in wire harness 
and/or sub-wire harness 1. Repair or replace if there is an 
open or short circuit.
 Between cylinder-#3 ignition 
coil coupler and ECU coupler.
(Red/Black–Red/Black)
(Orange/Green–Orange/Green)
3 Defective cylinder-#3 ignition coil.  Execute the diagnostic mode. 
(Code No.32)
 Test the primary and secondary 
coils for continuity.
 Replace if defective.
Refer to CHECKING THE 
IGNITION COILS on page 8-
91. 
						

							FUEL INJECTION SYSTEM
8-55
Fault code No. 36 SymptomOpen circuit detected in the primary lead of the cylinder- 
#4 ignition coil.
Diagnostic code No. 33 Cylinder-#4 ignition coil
Orde
rItem/components and probable 
causeCheck or maintenance jobReinstatement 
method
1 Connections
 Cylinder-#4 ignition coil coupler
 Main wire harness ECU coupler
 Sub-wire harness 1 coupler Check the couplers for any pins 
that may have pulled out.
 Check the locking condition of 
the couplers.
 If there is a malfunction, repair it 
and connect the coupler 
securely.Cranking the 
engine. 
(Connect the 
cylinder-#4 igni-
tion coil cou-
pler.)
2 Open or short circuit in wire harness 
and/or sub-wire harness 1. Repair or replace if there is an 
open or short circuit.
 Between cylinder-#4 ignition 
coil coupler and ECU coupler/
main wire harness.
(Red/Black–Red/Black)
(Gray/Green–Gray/Green)
3 Defective cylinder-#4 ignition coil.  Execute the diagnostic mode. 
(Code No.33)
 Test the primary and secondary 
coils for continuity.
 Replace if defective.
Refer to CHECKING THE 
IGNITION COILS on page 8-
91. 
						

							FUEL INJECTION SYSTEM
8-56
Fault code No. 39 Symptom Open circuit detected in injector.
Diagnostic code No.36
37
38
39Injector #1
Injector #2
Injector #3
Injector #4
Orde
rItem/components and probable 
causeCheck or maintenance jobReinstatement 
method
1 Connections
 Injector coupler
 Main wire harness ECU coupler
 Sub-wire harness 2 coupler Check the couplers for any pins 
that may have pulled out.
 Check the locking condition of 
the couplers.
 If there is a malfunction, repair it 
and connect the coupler 
securely.Cranking the 
engine. 
(Connect the 
fuel injector 
couplers.)
2 Open or short circuit in wire harness 
and/or sub-wire harness 2. Repair or replace if there is an 
open or short circuit.
 Between injector coupler and 
ECU coupler.
(Red/Blue–Red/Blue)
#1: (Red/Black–Red/Black)
#2: (Green/Black–Green/Black)
#3: (Blue/Black–Blue/Black)
#4: (Orange/Black–Orange/
Black)
3 Defective injector.  Execute the diagnostic mode. 
(Code Nos.36, 37, 38, 39)
 Replace if defective.
Refer to CHECKING THE 
INJECTORS on page 7-6. 
						

							FUEL INJECTION SYSTEM
8-57
Fault code No. 41 Symptom Lean angle sensor: open or short circuit detected.
Diagnostic code No. 08 Lean angle sensor
Orde
rItem/components and probable 
causeCheck or maintenance jobReinstatement 
method
1 Connections
 Lean angle sensor coupler
 Main wire harness ECU coupler Check the coupler for any pins 
that may be pulled out.
 Check the locking condition of 
the coupler.
 If there is a malfunction, repair it 
and connect the coupler 
securely.Reinstated 
automatically if 
a normal signal 
is received.
2 Open or short circuit in lead wire.  Repair or replace if there is an 
open or short circuit.
 Between lean angle sensor 
coupler and ECU coupler.
(Blue–Blue)
(Yellow/Green–Yellow/Green)
(Black/Blue–Black/Blue)
3 Defective lean angle sensor.  Execute the diagnostic mode. 
(Code No.08)
 Replace if defective.
Refer to CHECKING THE 
LEAN ANGLE SENSOR on 
page 8-92. 
						

							FUEL INJECTION SYSTEM
8-58
Fault code No. 42 SymptomA No normal signals are received from the speed sensor.
B Open circuit is detected in the neutral switch.
Diagnostic code No.A 07 Speed sensor
B21Neutral switch
Orde
rItem/components and probable 
causeCheck or maintenance jobReinstatement 
method
A-1 Installed state of speed sensor. Check for looseness or pinching. Starting the 
engine, and 
activating the 
speed sensor 
by operating the 
vehicle. A-2 Connections
 Speed sensor coupler
 Main wire harness ECU coupler Check the couplers for any pins 
that may be pulled out.
 Check the locking condition of 
the couplers.
 If there is a malfunction, repair it 
and connect the coupler 
securely.
A-3 Open or short circuit in lead. Repair or replace if there is an 
open or short circuit.
 Between speed sensor coupler 
and ECU coupler.
(Blue–Blue)
(White/Yellow–White/Yellow)
(Black/Blue–Black/Blue)
A-4 Defective speed sensor.  Execute the diagnostic mode. 
(Code No. 07)
 Replace if defective.
Refer to CHECKING THE 
SPEED SENSOR on page 8-
95.
B-1 Installed state of neutral switch. Check for looseness or pinching.
B-2 Connections
 Neutral switch coupler
 Main wire harness ECU coupler Check the couplers for any pins 
that may be pulled out.
 Check the locking condition of 
the couplers.
 If there is a malfunction, repair it 
and connect the coupler 
securely.
B-3 Open circuit in neutral switch lead.  Repair or replace if there is an 
open circuit.
 Between neutral switch coupler 
and relay unit coupler.
(Sky blue–Sky blue)
 Between relay unit coupler and 
ECU coupler.
(Blue/Yellow–Blue/Yellow)
B-4 Defective neutral switch.  Execute the diagnostic mode. 
(Code No.21)
 Replace if defective.
Refer to CHECKING THE 
SWITCHES on page 8-81.
B-5 Faulty shift drum (neutral detection 
area). Replace if defective.
Refer to TRANSMISSION on 
page 5-84. 
						

							FUEL INJECTION SYSTEM
8-59
Fault code No. 43 SymptomPower supply to the injectors and fuel pump is not nor-
mal.
Diagnostic code No. 09 Fuel system voltage (battery voltage)
Orde
rItem/components and probable 
causeCheck or maintenance jobReinstatement 
method
1 Connections
 Relay unit coupler (fuel pump relay)
 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.Turning the 
main switch to 
“ON” when the 
engine stop 
switch is set to 
“ ”.
2 Open or short circuit in the wire har-
ness. Repair or replace if there is an 
open or short circuit.
 Between relay unit coupler and 
ECU coupler.
(Blue/Yellow–Blue/Yellow)
(Red/Blue–Red/Blue)
 Between relay unit coupler and 
starter relay coupler.
(Red–Red)
 Between relay unit coupler and 
right handlebar switch coupler.
(Red/Black–Red/Black)
3 Malfunction or open circuit in fuel 
pump relay. Execute the diagnostic mode. 
(Code No. 09)
 Replace if defective.
 If there is no malfunction with 
the fuel pump relay, replace the 
ECU.
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.
Orde
rItem/components and probable 
causeCheck or maintenance jobReinstatement 
method
1 Malfunction in ECU.  Set the faulty cylinder’s 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 displayed alter-
nately at 2-second intervals.)
2 Execute the CO adjustment 
mode and set the exhaust gas 
volume of the faulty cylinder to 
“0”.
 Replace ECU if it does not 
recover from the malfunction.Turning the 
main switch to 
“ON”. 
(Readjust the 
exhaust gas vol-
ume after it is 
reinstated.) 
						

							FUEL INJECTION SYSTEM
8-60
Fault code No. 46 Symptom Power supply is not normal.
Diagnostic code No. — —
Orde
rItem/components and probable 
causeCheck or maintenance jobReinstatement 
method
1 Malfunction in rectifier/regulator  Replace if defective.
Refer to CHARGING SYS-
TEM on page 8-11.Starting the 
engine and 
operating it at 
idle.
2 Open or short circuit in wire harness.  Repair or replace if there is an 
open or short circuit in the 
charging system’s wiring.
Refer to CHARGING SYS-
TEM on page 8-11.
Fault code No. 50 SymptomFaulty ECU memory. (When this malfunction is detected 
in the ECU, the fault code number might not appear on 
the meter.)
Diagnostic code No. — —
Orde
rItem/components and probable 
causeCheck or maintenance jobReinstatement 
method
1 Malfunction in ECU. Replace the ECU.
NOTE:
Be sure to turn the main switch to 
“OFF” before replacing the ECU.Turning the 
main switch to 
“ON”. 
						

							FUEL INJECTION SYSTEM
8-61
Fault code No. 59 SymptomThrottle position sensor (for throttle cable pulley): open 
or short circuit detected.
Throttle position sensor (for throttle cable pulley): cou-
pler connection is loose.
Diagnostic code No.14
15Throttle position sensor (for throttle cable pulley) signal 1
Throttle position sensor (for throttle cable pulley) signal 2
Orde
rItem/components and probable 
causeCheck or maintenance jobReinstatement 
method
1 Installed state of throttle position sen-
sor (for throttle cable pulley). Check for looseness or pinch-
ing.
 Check that the sensor is 
installed in the specified posi-
tion.Turning the 
main switch to 
“ON”.
2 Connections
 Throttle position sensor (for throttle 
cable pulley) coupler
 Main wire harness ECU coupler Check the couplers for any pins 
that may be pulled out.
 Check the locking condition of 
the couplers.
 If there is a malfunction, repair it 
and connect the coupler 
securely.
3 Open or short circuit in wire harness.  Repair or replace if there is an 
open or short circuit.
 Between throttle position sensor 
(for throttle cable pulley) coupler 
and ECU coupler.
(Black/Blue–Black/Blue)
(White–White)
(Blue–Blue)
(Black–Black)
4 Defective throttle position sensor (for 
throttle cable pulley). Execute the diagnostic mode. 
(Code Nos. 14, 15)
 Replace if defective.
Refer to CHECKING THE 
THROTTLE POSITION SEN-
SOR (FOR THROTTLE CABLE 
PULLEY) on page 8-97.