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 pinch-
ing.
 Check that the sensor is 
installed in the specified posi-
tion.Turning the 
main switch to 
“ON”.
2 Connections
 Throttle servo motor 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 servo motor 
coupler and ECU coupler.
(Yellow/Red–Yellow/Red)
(Light green/Red–Light green/
Red)
4 Defective throttle servo motor.  Execute the diagnostic mode. 
(Code Nos. 01, 13)
 Replace the throttle body 
assembly if defective.
5 Malfunction in ECU. Replace the ECU.
Fault code No. Er-1 Symptom No signals are received from the ECU.
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 switch to 
“ON”.
2 Open or short circuit in wire harness.  Repair or replace if there is an 
open or short circuit.
 Between meter assembly cou-
pler and ECU coupler.
(Yellow/Blue–Yellow/Blue)
3 Malfunction in meter assembly. Replace the meter assembly.
4 Malfunction in ECU. Replace the ECU. 
						

							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 the 
main switch to 
“ON”.
2 Open or short circuit in wire harness.  Repair or replace if there is an 
open or short circuit.
 Between meter assembly cou-
pler and ECU coupler.
(Yellow/Blue–Yellow/Blue)
3 Malfunction in meter assembly. Replace the meter assembly.
4 Malfunction in ECU. Replace the ECU.
Fault code No. Er-3 Symptom Data from the ECU cannot be received correctly.
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 switch to 
“ON”.
2 Open or short circuit in wire harness.  Repair or replace if there is an 
open or short circuit.
 Between meter assembly cou-
pler and ECU coupler.
(Yellow/Blue–Yellow/Blue)
3 Malfunction in meter assembly. Replace the meter assembly.
4 Malfunction in ECU. Replace the ECU. 
						

							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 switch to 
“ON”.
2 Open or short circuit in wire harness.  Repair or replace if there is an 
open or short circuit.
 Between meter assembly cou-
pler and ECU coupler.
(Yellow/Blue–Yellow/Blue)
3 Malfunction in meter assembly. Replace the meter assembly.
4 Malfunction in ECU Replace the ECU. 
						

							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 the battery.
3 Check the main switch.
Refer to CHECKING THE 
SWITCHES on page 8-81.Replace the immobilizer unit.
4 Check the engine stop switch.
Refer to CHECKING THE 
SWITCHES on page 8-81.Replace the right handlebar switch.
5 Check the starting circuit cut-off 
relay.
Refer to CHECKING THE 
RELAYS on page 8-88.Replace the starting circuit cut-off 
relay.
6 Check the fuel pump.
Refer to CHECKING THE FUEL 
PRESSURE on page 7-6.Replace the fuel pump. 
						

							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 each standard key. Do not use the key with the 
red bow for driving. It should only be used for re-registering new codes in the standard keys. The 
immobilizer system cannot be operated with a new key until the key registered with a code. If you 
lose the code re-registering key, the ECU and main switch (equipped with the immobilizer unit) need 
to be replaced.
Therefore, always use a standard key for driving. (See caution below.)
NOTE:
Each standard key is registered during production, therefore re-registering at purchase is not neces-
sary.
CAUTION:
ECA14971
 DO NOT LOSE THE CODE RE-REGISTERING KEY! If the code re-registering key is lost, reg-
istering new codes in the standard keys is impossible. The standard keys can still be used 
to start the vehicle. However, if code re-registering is required (e.g., if a new standard key is 
made or all keys are lost) the entire immobilizer system must be replaced. Therefore, it is 
highly recommended to use either standard key for driving, and to keep the code re-regis-
tering key in a safe place.
 Do not submerse the keys in water.
 Do not expose the keys to excessively high temperatures.
 Do not place the keys close to magnets (this includes, but is not limited to, products such 
as speakers, etc.).
 Do not place heavy items on the keys.
 Do not grind the keys or alter their shape.
 Do not disassemble the key bows.
 Do not put two keys of any immobilizer system on the same key ring.
 Keep the standard keys as well as other immobilizer system keys away from the code re-
registering key.
 Keep other immobilizer system keys away from the main switch as they may cause signal 
interference.
EAS27691
PART REPLACEMENT AND KEY CODE REGISTRATION REQUIREMENTS
In the course of use, you may encounter the following cases where replacement of parts and regis-
tration of code re-registering/standard keys are required.
NOTE:
Each standard key is registered during production, therefore re-registering at purchase is not neces-
sary.