Yamaha Fz6n Manual
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8-43 1Main switch 6Fuse (main) 9Battery 19Coolant temperature sensor 20ECU 42Fuse (radiator fan motor) 43Radiator fan motor relay 44Radiator fan motor 47Fuse (ignition) COOLING SYSTEMELEC EAS00807 COOLING SYSTEM CIRCUIT DIAGRAM
8-44 YESNO 2. Battery Check the condition of the battery. Refer to “CHECKING AND CHARGING THE BATTERY” in chapter 3. Minimum open-circuit voltage 12.8 V or more at 20C (68F) Is the battery OK? Clean the battery terminals. Recharge or re- place the battery. EAS00739 EAS00749 3. Main switch Check the main switch for continuity. Refer to “CHECKING THE SWITCHES”. Is the main switch OK? YESNO Replace the main switch. COOLING SYSTEMELEC NOTE: YESNO 1. Main, ignition and radiator fan motor fuses Check the main, ignition and radiator fan motor fuses for continuity. Refer to “CHECKING THE FUSES” in chap- ter 3. Are the main, ignition and radiator fan motor fuses OK? Replace the fuse(s). EAS00808 TROUBLESHOOTING The radiator fan motor fails to turn. The coolant temperature indicator light fails to light when the engine is warm. Check: 1. main, ignition, and radiator fan motor fuses 2. battery 3. main switch 4. radiator fan motor 5. radiator fan motor relay 6. coolant temperature sensor 7. wiring connections (the entire cooling system) Before troubleshooting, remove the following part(s): 1. seat 2. front cowling inner panel (left and right) 3. fuel tank 4. side cover Troubleshoot with the following special tool(s). Pocket tester 90890-03112, YU-3112 EAS00738
8-45 YESNO 4. Radiator fan motor Disconnect the radiator fan motor coupler from the wire harness. Connect the battery (DC 12 V) as shown. The radiator fan mo- tor is faulty and must be replaced. Positive battery lead blue Negative battery lead black1 2 Does the radiator fan motor turn? 5. Radiator fan motor relay Disconnect the radiator fan motor relay form the wire harness. Connect the pocket tester (Ω 1) and bat- tery (12 V) to the radiator fan motor terminal as shown. Check the radiator fan motor for continuity. Replace the radiator fan motor. NOYES Battery positive terminal red / white Battery negative terminal green / yellow 1 2 Does the radiator fan motor relay have conti- nuity between brown / black and blue? Tester positive probe brown / black Tester negative probe blue3 4 COOLING SYSTEMELEC EAS00809
8-46 COOLING SYSTEMELEC Remove the coolant temperature sensor. Connect the pocket tester (Ω 1k) to the coolant temperature sensor as shown. Immerse the coolant temperature sensor in a container filled with coolant . Make sure the coolant temperature sensor terminals do not get wet. Place a thermometer in the coolant. Slowly heat the coolant, and then let it cool to the specified temperature indicated in the table. Check the coolant temperature sensor for continuity at the temperatures indicated in the table. EAS00812 1 Coolant temperature sensor resistance 0C (32F): 5.21 6.37 kΩ 80C (176F): 0.29 0.35 kΩ WARNING Handle the coolant temperature sensor with special care. Never subject the coolant temperature sensor to strong shocks. If the coolant temperature sensor is dropped, replace it. 6. Coolant temperature sensor Replace the coolant temperature sensor. NOYES Coolant temperature sensor 20 Nm (2.0 mkg, 14 ftlb) Three bond sealock 10 Does the coolant temperature sensor oper- ate properly? 7. Wiring Check the entire cooling system’s wiring. Refer to “CIRCUIT DIAGRAM”. Is the cooling system’s wiring properly con- nected and without defects? Properly connect or repair the cooling system’s wiring. NOYES This circuit is OK. EAS00813 2 NOTE: 3
8-47 1Main switch 5Fuse (fuel injection) 6Fuse (main) 9Battery 10Starting circuit cut-off relay 13Fuel pump 20ECU 40Engine stop switch 47Fuse (ignition) FUEL PUMP SYSTEMELEC EAS00814 FUEL PUMP SYSTEM CIRCUIT DIAGRAM
8-48 FUEL PUMP SYSTEMELEC 1Battery 2Fuse (main) 3Main switch 4Fuse (ignition) 5Engine stop switch 6ECU 7Fuse (fuel injection) 8Starting circuit cut-off relay (fuel injection system relay) 9Fuel pump EAS00815 FUEL PUMP SYSTEM The ECU includes the control unit for the fuel pump.
8-49 FUEL PUMP SYSTEMELEC YESNO 2. Battery Check the condition of the battery Refer to “CHECKING AND CHARGING THE BATTERY” in chapter 3. Minimum open-circuit voltage 12.8 V or more at 20C (68F) Is the battery OK? Clean the battery terminals. Recharge or re- place the battery. EAS00739 EAS00749 3. Main switch Check the main switch for continuity. Refer to “CHECKING THE SWITCHES”. YESNO Replace the main switch. Is the main switch OK? EAS00750 4. Engine stop switch Check the engine stop switch for continuity. Refer to “CHECKING THE SWITCHES”. YESNO Replace the right handlebar switch. Is the engine stop switch OK? NOTE: YESNO 1. Main, ignition and fuel injection system fuses Check the main, ignition and fuel system fuses for continuity. Refer to “CHECKING THE FUSES” in chap- ter 3. Replace the fuse(s). Are the main, ignition and fuel injection sys- tem fuses OK? EAS00816 TROUBLESHOOTING If the fuel pump fails to operate. Check: 1. main, ignition and fuel injection fuses 2. battery 3. main switch 4. engine stop switch 5. starting circuit cut-off relay (the fuel injection system relay) 6. fuel pump 7. wiring connections (the entire fuel system) Before troubleshooting, remove the following part(s): 1. seat 2. front cowling inner panel (left and right) 3. fuel tank Troubleshoot with the following special tool(s). Pocket tester 90890-03112, YU-3112 EAS00738
8-50 FUEL PUMP SYSTEMELEC YESNO 5 Starting circuit cut-off relay (fuel injection system relay) Disconnect the starting circuit cut-off relay coupler from the wire harness. Connect the pocket tester (Ω 1) and bat- tery (12V) to the starting circuit cut-off relay coupler as shown. Replace the starting circuit cut-off relay. Positive battery lead red / black Negative battery lead blue / yellow 1 2 Positive tester probe red Negative tester probe red / blue3 4 Does the starting circuit cut-off relay have continuity between red and red / blue? YESNO 6. Fuel pump resistance Disconnect the fuel pump coupler from the wire harness. Connect the pocket tester (Ω 1) to the fuel pump coupler as shown. Properly connect or repair the fuel sys- tem’s wiring. 1 2 Positive tester probe red / blue Negative tester probe black EAS00817 YESNO Fuel pump resistance 0.2 3.0 Ω at 20C (68F) Is the fuel pump OK? Replace the fuel pump. Measure the fuel pump resistance. 7. Wiring Check the entire fuel pump system’s wiring. Refer to “CIRCUIT DIAGRAM”. Is the fuel system’s wiring properly con- nected and without defects? EAS00818 Replace the ECU. EAS00759
8-51 FUEL PUMP SYSTEMELEC WARNING EAS00819 CHECKING THE FUEL PUMP Gasoline is extremely flammable and under certain circumstances there can be a danger of an explosion or fire. Be extremely careful and note the following points: Stop the engine before refueling. Do not smoke, and keep away from open flames, sparks, or any other source of fire. If you do accidentally spill gasoline, wipe it up immediately with dry rags. If gasoline touches the engine when it is hot, a fire may occur. Therefore, make sure the engine is completely cool before per- forming the following test. 1. Check: Fuel pump operation a. Fill the fuel tank. b. Put the end of the fuel hose into an open con- tainer. c. Connect the battery (DC 12 V) to the fuel pump coupler as shown. Positive battery lead red / blue 1 Negative battery lead black 2 d. If fuel flows out of the fuel hose, the fuel pump is OK. If fuel does not flow, replace the fuel pump.
8-52 SELF-DIAGNOSISELEC SELF-DIAGNOSIS The FZ6-SS / FZ6-SSC features a self-diagnosing system for the following circuit(-s): Fuel pump thermistor Oil level switch If any of these circuits are defective, their respective condition codes will be displayed on the warning light when the main switch is turned “ON” (irrespective of whether the engine is running or not). Circuit Defect(-s)System responseCondition code Fuel pump thermistorOpen-circuit Short-circuitThe fuel warning light indicate the condition code.Refer to *1 Oil level gaugeOpen-circuit Short-circuitThe oil level warning light indicate the condition code.Refer to *2 *1Condition code Fuel warning light * 2Condition code Oil level warning light