Yamaha Yzf R1 2007 Manual
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SIGNALING SYSTEM 8-22 NG→ OK↓ The tail/brake light fails to come on. NG→ OK↓ NG→ OK↓ NG→ OK↓ NG→ OK↓ The turn signal light, turn signal indicator light or both fail to blink. NG→ OK↓ NG→ OK↓ 3 Check the entire signaling system’s wiring. Refer to SIGNALING SYSTEM on page 8-19.Properly connect or repair the signal- ing system’s wiring. This circuit is OK. 1 Check the tail/brake light bulb and socket. Refer to CHECKING THE BULBS AND BULB SOCKETS on page 8- 84.Replace the tail/brake light bulb, socket or both. 2 Check the front brake light switch. Refer to CHECKING THE SWITCHES on page 8-81.Replace the front brake light switch. 3 Check the rear brake light switch. Refer to CHECKING THE SWITCHES on page 8-81.Replace the rear brake light switch. 4 Check the entire signaling system’s wiring. Refer to SIGNALING SYSTEM on page 8-19.Properly connect or repair the signal- ing system’s wiring. This circuit is OK. 1 Check the turn signal light bulb and socket. Refer to CHECKING THE BULBS AND BULB SOCKETS on page 8- 84.Replace the turn signal indicator light bulb, socket or both. 2 Check the turn signal switch. Refer to CHECKING THE SWITCHES on page 8-81.Replace the left handlebar switch.
SIGNALING SYSTEM 8-23 NG→ OK↓ NG→ OK↓ The neutral indicator light fails to come on. NG→ OK↓ NG→ OK↓ The oil level warning light fails to come on. NG→ OK↓ NG→ OK↓ The fuel level warning light fails to come on. NG→ OK↓ 3 Check the turn signal relay. Refer to CHECKING THE RELAYS on page 8-88.The turn signal relay is faulty and must be replaced. 4 Check the entire signaling system’s wiring. Refer to SIGNALING SYSTEM on page 8-19.Properly connect or repair the signal- ing system’s wiring. This circuit is OK. 1 Check the neutral switch. Refer to CHECKING THE SWITCHES on page 8-81.Replace the neutral switch. 2 Check the entire signaling system’s wiring. Refer to SIGNALING SYSTEM on page 8-19.Properly connect or repair the signal- ing system’s wiring. This circuit is OK. 1 Check the oil level switch. Refer to CHECKING THE SWITCHES on page 8-81.Replace the oil level switch. 2 Check the entire signaling system’s wiring. Refer to SIGNALING SYSTEM on page 8-19.Properly connect or repair the signal- ing system’s wiring. This circuit is OK. 1 Check the fuel sender. Refer to CHECKING THE FUEL SENDER on page 8-95.Replace the fuel pump assembly.
SIGNALING SYSTEM 8-24 NG→ OK↓ The speedometer fails to operate. NG→ OK↓ NG→ OK↓ 2 Check the entire signaling system’s wiring. Refer to SIGNALING SYSTEM on page 8-19.Properly connect or repair the signal- ing system’s wiring. This circuit is OK. 1 Check the speed sensor. Refer to CHECKING THE SPEED SENSOR on page 8-95.Replace the speed sensor. 2 Check the entire signaling system’s wiring. Refer to SIGNALING SYSTEM on page 8-19.Properly connect or repair the signal- ing system’s wiring. Replace the meter assembly.
COOLING SYSTEM 8-25 EAS27300 COOLING SYSTEM EAS27310 CIRCUIT DIAGRAM
COOLING SYSTEM 8-26 EAS27320 TROUBLESHOOTING NOTE: Before troubleshooting, remove the following part(s): 1Rider seat 2 Passenger seat 3 Fuel tank 4Side cowling NG→ OK↓ NG→ OK↓ NG→ OK↓ NG→ OK↓ NG→ OK↓ NG→ OK↓ 1. Main switch 4. Main fuse 8. Battery 19.ECU (engine control unit) 36.Coolant temperature sensor 79.Ignition fuse 83.Radiator fan motor relay84.Right radiator fan motor fuse 85.Left radiator fan motor fuse 86.Right radiator fan motor 87.Left radiator fan motor 88.Ground 89.Battery negative lead 1 Check the fuses. (Main, ignition and radiator fan motor) 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 radiator fan motor. Refer to CHECKING THE RADIA- TOR FAN MOTORS on page 8-96.The radiator fan motor is faulty and must be replaced. 5 Check the radiator fan motor relay. Refer to CHECKING THE RELAYS on page 8-88.Replace the radiator fan motor relay. 6 Check the coolant temperature. Refer to CHECKING THE COOL- ANT TEMPERATURE SENSOR on page 8-96.Replace the coolant temperature sen- sor.
COOLING SYSTEM 8-27 NG→ OK↓ 7 Check the entire cooling system’s wiring. Refer to COOLING SYSTEM on page 8-25.Properly connect or repair the cooling system’s wiring. This circuit is OK.
FUEL INJECTION SYSTEM 8-29 EAS27330 FUEL INJECTION SYSTEM EAS27340 CIRCUIT DIAGRAM
FUEL INJECTION SYSTEM 8-30 1. Main switch 4. Main fuse 5. Backup fuse 8. Battery 9. Fuel injection system fuse 12.Starting circuit cut-off relay 13.Neutral switch 14.Sidestand switch 15.Fuel pump 16.Throttle position sensor (for throttle valves) 17.Throttle position sensor (for throttle cable pulley) 18.O 2 sensor 19.ECU (engine control unit) 20.Ignition coil #1 21.Ignition coil #2 22.Ignition coil #3 23.Ignition coil #4 24.Spark plug 25.Injector #1 26.Injector #2 27.Injector #3 28.Injector #4 32.EXUP servo motor 33.Speed sensor 34.Intake air temperature sensor 35.Crankshaft position sensor 36.Coolant temperature sensor 37.Intake air pressure sensor 38.Atmospheric pressure sensor 39.Cylinder identification sensor 40.Lean angle sensor 48.Multi-function meter 58.Engine stop switch 81.Ignition fuse 91.Ground 92.Battery negative lead
FUEL INJECTION SYSTEM 8-31 EAS27350 ECU SELF-DIAGNOSTIC FUNCTION The ECU is equipped with a self-diagnostic function in order to ensure that the fuel injection system is operating normally. If this function detects a malfunction in the system, it immediately operates the engine under substitute characteristics and illuminates the engine trouble warning light to alert the rider that a malfunction has occurred in the system. Once a malfunction has been detected, a fault code is stored in the memory of the ECU. To inform the rider that the fuel injection system is not functioning, the engine trouble warning light flashes when the start switch is being pushed to start the engine. If a malfunction is detected in the system by the self-diagnostic function, the ECU provides an appropriate substitute characteristic operation, and alerts the rider of the detected malfunction by illuminating the engine trouble warning light. After the engine has been stopped, the lowest fault code number appears on the odometer/trip meter/fuel reservoir trip meter/stop watch LCD. Once a fault code has been displayed, it remains stored in the memory of the ECU until it is deleted. Engine trouble warning light indication and FI system operation * The warning light flashes when any one of the conditions listed below is present and the start switch is pushed: Checking engine trouble warning light The engine trouble warning light comes on for 1.4 seconds after the main switch has been turned to “ON” and it comes on while the start switch is being pushed. If the warning light does not come on under these conditions, the warning light (LED) may be defective.Warning light indica- tionECU operation FI operation Vehicle operation Flashing*Warning provided when unable to start engineOperation stopped Cannot be operated Remains on Malfunction detectedOperated with substi- tute characteristics in accordance with the description of the mal- functionCan or cannot be oper- ated depending on the fault code 11: Cylinder identification sensor 30:Lean angle sensor (latch up detected) 12: Crankshaft position sensor 41:Lean angle sensor (open or short-circuit) 19:Sidestand switch (open circuit in the wire to the ECU)50:ECU internal malfunction (faulty ECU memory) a b cc d