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...

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...

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...

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...

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...

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...

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...

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...

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...

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...