Yamaha Yzf R1 2007 Manual

FUEL INJECTION SYSTEM
8-62
Fault code No. 60 SymptomThrottle servo motor: open or short circuit detected.
Defective throttle servo motor.
Malfunction in ECU (servo motor driving system).
Diagnostic code No.01
13Throttle position sensor (for throttle valves) signal 1
Throttle position sensor (for throttle valves) signal 2
Orde
rItem/components and probable 
causeCheck or maintenance jobReinstatement 
method
1 Installed state of accelerator position 
sensor (for throttle valves). Check for looseness or...

FUEL INJECTION SYSTEM
8-63
Fault code No. Er-2 SymptomNo signals are received from the ECU within the specified 
duration.
Diagnostic code No. — —
Orde
rItem/components and probable 
causeCheck or maintenance jobReinstatement 
method
1 Connections
 Main wire harness ECU coupler
 Main wire harness meter assembly 
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.Turning...

FUEL INJECTION SYSTEM
8-64
Fault code No. Er-4 Symptom Non-registered data has been received from the meter.
Diagnostic code No. — —
Orde
rItem/components and probable 
causeCheck or maintenance jobReinstatement 
method
1 Connections
 Main wire harness ECU coupler
 Main wire harness meter assembly 
coupler Check the couplers 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.Turning the 
main...

FUEL PUMP SYSTEM
8-65
EAS27550
FUEL PUMP SYSTEM
EAS27560
CIRCUIT DIAGRAM 

FUEL PUMP SYSTEM
8-66
1. Main switch
4. Main fuse
8. Battery
9. Fuel injection system fuse
12.Starting circuit cut-off relay
15.Fuel pump
19.ECU (engine control unit)
48.Multi-function meter
58.Engine stop switch
79.Ignition fuse
88.Ground
89.Battery negative lead 

FUEL PUMP SYSTEM
8-67
EAS27570
TROUBLESHOOTING
If the fuel pump fails to operate.
NOTE:
 Before troubleshooting, remove the following part(s):
1Rider seat
2 Passenger seat
3 Fuel tank
4 Side cowlings
NG→
OK↓
NG→
OK↓
NG→
OK↓
NG→
OK↓
NG→
OK↓
NG→
OK↓ 1 Check the fuses.
(Main, ignition and fuel injection 
system)
Refer to CHECKING THE FUSES 
on page 8-85.Replace the fuse(s).
2 Check the battery.
Refer to CHECKING AND 
CHARGING THE BATTERY on 
page 8-85. Clean the battery terminals.
 Recharge or replace...

FUEL PUMP SYSTEM
8-68
NG→
OK↓ 7 Check the entire fuel pump sys-
tem’s wiring.
Refer to FUEL PUMP SYSTEM 
on page 8-65.Properly connect or repair the fuel 
pump system’s wiring.
Replace the ECU. 

IMMOBILIZER SYSTEM
8-69
EAS27640
IMMOBILIZER SYSTEM
EAS27650
CIRCUIT DIAGRAM 

IMMOBILIZER SYSTEM
8-70
1. Main switch
4. Main fuse
5. Backup fuse
6. Immobilizer unit
8. Battery
19.ECU (engine control unit)
42.Immobilizer system indicator light
48.Multi-function meter
79.Ignition fuse
88.Ground
89.Battery negative lead 

IMMOBILIZER SYSTEM
8-71
EAS27671
GENERAL INFORMATION
This vehicle is equipped with an immobilizer system to help prevent theft by re-registering codes in 
the standard keys. This system consists of the following:
 a code re-registering key (with a red bow)
 two standard keys (with a black bow) that can be re-registered with new codes
 a transponder (installed in the key bow)
 an immobilizer unit
the ECU
 an immobilizer system indicator light
The key with the red bow is used to register codes in...