Yamaha Fz6n Manual
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7-18 FUEL INJECTION SYSTEMFI Tester positive prove blue Tester negative prove yellow / green1 2 Fault code No.30SymptomThe motorcycle has overturned. Used diagnostic code No. 08 (lean angle cut-off switch) OrderInspection operation item and probable causeOperation item and countermeasureReinstatement method 1The motorcycle has overturned.Raise the motorcycle upright.Reinstated by 2Installed condition of the lean angle cut- off switchCheck the installed area for looseness or pinching.turning the main switch ON (however3Connected condition of connector Inspect 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 it securely. Lean angle cut-off switch coupler Main wiring harness ECU couplerON (however, the engine can- not be re- started unless the main switch is first turned 4Defective lean angle cut-off switchExecute the diagnostic mode (code No. 08) Replace if defective. 1. Remove the lean angle cut-off switch from the motorcycle. 2. Connect the lean angle cut-off switch coupler to the wireharness. 3. Connect the pocket tester (DC 20 V) to the lean angle cut-off switch coupler as shown. 4. When turning the lean angle cut-off switch approx. 65, the voltage reading change from 1.0 V to 4.0 V. 5. Is the emergency stop switch OK? is first turned OFF).
7-19 FUEL INJECTION SYSTEMFI Fault code No.33SymptomMalfunction detected in the primary lead of the ignition coil (#1, #4). Used diagnostic code No. 30 (ignition coil #1, #4) OrderInspection operation item and probable causeOperation item and countermeasureReinstatement method 1Connected condition of connector Inspect 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 it securely. Ignition coil primary side coupler - orange / black Main wiring harness ECU coupler Sub-wire harness couplerReinstated by starting the en- gine and oper- ating it at idle. In case of mul- ti l li d2Open or short circuit in lead.Repair or replace if there is an open or short circuit. Between ignition coil coupler (#1 and #4) and ECU coupler / main harness orange / black – orange / black red / black – red / blacktiple cylinder open or short circuit in lead, make sure to turn ON and OFF the main switch after3Defective ignition coil (test the primary and secondary coils for continuity).Execute the diagnostic mode (code No. 30) Replace if defective. Refer to “IGNITION SYSTEM” in chapter 8.switch after each time of cranking. Fault code No.34SymptomMalfunction detected in the primary lead of the ignition coil (#2, #3). Used diagnostic code No. 31 (ignition coil #2, #3) OrderInspection operation item and probable causeOperation item and countermeasureReinstatement method 1Connected condition of connector Inspect 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 it securely. Ignition coil primary side coupler - gray / black Main wiring harness ECU coupler Sub-wire harness couplerReinstated by starting the en- gine and oper- ating it at idle. In case of mul- ti l li d2Open or short circuit in lead wire.Repair or replace if there is an open or short circuit. Between ignition coil coupler (#2 and #3) and ECU coupler / main harness gray / black – gray / black red / black – red / blacktiple cylinder open or short circuit in lead, make sure to turn ON and OFF the main switch after each time of3Defective ignition coil (test the primary and secondary coils for continuity).Execute the diagnostic mode (code No. 31) Replace if defective. Refer to “IGNITION SYSTEM” in chapter 8.each time of cranking. Fault code No.41SymptomOpen or short circuit detected in the lean angle cut-off switch. Used diagnostic code No. 08 (lean angle cut-off switch) OrderInspection operation item and probable causeOperation item and countermeasureReinstatement method 1Connected condition of connector Inspect 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 it securely. Lean angle cut-off switch coupler Main wiring harness ECU couplerReinstated by turning the mains witch ON. 2Open or short circuit in wiring harness.Repair or replace if there is an open or short circuit. Between switch coupler and ECU coupler black / blue - black / blue yellow / green - yellow / green blue - blue 3Defective lean angle cut-off switchExecute the diagnostic mode (code No. 08) Replace if defective. Refer to Fault code No. 30.
7-20 FUEL INJECTION SYSTEMFI Speed sensor output voltage When sensor is on DC 4.8 V or more When sensor is off DC 0.6 V or less Tester positive probe white Tester negative probe black / blue 1 2 Fault code No.42Symptom1 No normal signals are received from the speed sensor. 2 Open or short circuit is detected in the neutral switch. Used diagnostic code No. 07 (speed sensor) A1 A4 No. 21 (neutral switch) B1 B4 OrderInspection operation item and probable causeOperation item and countermeasureReinstatement method A1Connected condition of speed sensor connector Inspect the coupler for any pins that may have pulled out. Check the locking condition of the cou- pler.If there is a malfunction, repair it and connect it securely. Speed sensor coupler Main wiring harness ECU couplerReinstated by starting the engine, and inputting the vehicle speed signals by ti thA2Open or short circuit in speed sensor lead.Repair or replace if there is an open or short circuit. Between sensor coupler and ECU coupler. blue - blue white / yellow - white / yellow black / blue - black / blueoperating the motorcycle at a low speed of 20 to 30 km / h. A3Gear for detecting vehicle speed has broken.Replace if defective. Refer to “TRANSMISSION” in chapter 5. A4Defective speed sensorExecute the diagnostic mode (code No. 07) Replace if defective. 1. Measure the speed sensor output voltage. 2. Connect the pocket tester (DC 20 V) to the speed sensor coupler terminal as shown. 3. Measure the speed sensor output voltage. 4. Is the speed sensor OK? OrderInspection operation item and probable causeOperation item and countermeasureReinstatement method B1Connected condition of connector Inspect the coupler for any pins that may have pulled out. Check the locking condition of the cou- pler.If there is a malfunction, repair it and connect it securely. Neutral switch connector Main wiring harness ECU couplerReinstated by starting the engine, and inputting the vehicle speed ilbB2Open or short circuit in neutral switch lead.Repair or replace if there is an open or short circuit. Between switch connector and ECU coupler sky blue - black / yellowsignals by operating the motorcycle at a low speed of 20 to 30 km / hB3Faulty shift drum (neutral detection area)Replace if defective. Refer to “TRANSMISSION” in chapter 5.20 to 30 km/h. B4Defective neutral switchExecute the diagnostic mode (code No. 21) Replace if defective. Refer to “CHECKING THE SWITCHES” in chapter 8.
7-21 FUEL INJECTION SYSTEMFI Battery positive terminal red / black Battery positive terminal blue / yellow1 2 Tester positive probe red Tester negative probe red / blue 3 4 When the leads are disconnected, the voltage check by the code No. 09 is impossible. NOTE: Fault code No.43SymptomThe ECU is unable to monitor the battery voltage. Used diagnostic code No. 09 (fuel system voltage) OrderInspection operation item and probable causeOperation item and countermeasureReinstatement method 1Connected condition of connector Inspect 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 it securely. Starting circuit cut-off relay coupler (fuel injection system relay) Fuel pump coupler Injector coupler ECU couplerReinstated by starting the engine and operating it at idle. 2Malfunction in ECUFuel injection system relay is on. 3Open or short circuit in the wiring har- ness.Repair or replace if there is an open or short circuit. Between starting circuit cut-off relay (fuel injection system relay), fuel pump, injector (#1 #4) red / blue – red / blue 4Malfunction or open circuit in fuel injec- tion system relayExecute the diagnostic mode (code No. 09) Replace if defective. 1. Disconnect the starting circuit cut-off relay from the wire harness. 2. Connect the pocket tester (Ω 1) and battery (12 V) to the starting circuit cut-off relay termi- nals as shown. 3. Does the starting circuit cut-off relay have con- tinuity between red and red / blue?
7-22 FUEL INJECTION SYSTEMFI Fault code No.44SymptomError is detected while reading or writing on EEP-ROM (CO adjustment value). Used diagnostic No. 60 (EEP-ROM improper cylinder indication) OrderInspection operation item and probable causeOperation item and countermeasureReinstatement method 1Malfunction in ECUExecute diagnostic code 60 1. Check the faulty cylinder. (If there are multiple cylinders, the number of the faulty cylinders ap- pear alternately at 2-second intervals.) 2. Readjust the CO of the displayed cylinder. Refer to “ADJUSTING THE EXHAUST GAS VOLUME” in chapter 3. Replace ECU if defective.Reinstated by turning the main switch ON. Fault code No.46SymptomPower supply to the FI system relay is not normal. Used diagnostic code No. – – OrderInspection operation item and probable causeOperation item and countermeasureReinstatement method 1Connected condition of connector Inspect 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 it securely. ECU coupler.Reinstated by starting the en- gine and oper- ating it at idle. 2Faulty batteryReplace or change the battery Refer to “CHECKING AND CHARGING THE BAT- TERY” in chapter 3. 3Open or short circuit in wiring harness.Repair or replace if there is an open or short cir- cuit. Between battery and main switch red – red Between main switch and fuse (ignition) brown/blue – brown/blue Between fuse (ignition) and ECU red/white – red/white Fault code No.50SymptomFaulty ECU memory. (When this malfunction is detected in the ECU, the fault code number might not appear on the meter.) Used diagnostic code No. – – OrderInspection operation item and probable causeOperation item and countermeasureReinstatement method 1Malfunction in ECUReplace the ECU.Reinstated by turning the main switch ON.
7-23 FUEL INJECTION SYSTEMFI Fault code No.Er-1SymptomNo signals are received from the ECU. Used diagnostic code No. – – OrderInspection operation item and probable causeOperation item and countermeasureReinstatement method 1Connected condition of connector Inspect 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 it securely. Main wiring harness ECU coupler Sub-wire harness couplerReinstated by turning the main switch ON and receives a 2Open or short circuit in wiring harness and / or sub lead.Repair or replace if there is an open or short circuit. Between meter coupler and ECU coupler yellow / blue - yellow / blue black / white - black / whitenormal signal. 3Malfunction in meterReplace the meter. 4Malfunction in ECUReplace the ECU. Fault code No.Er-2SymptomNo signals are received from the ECU within the specified duration. Used diagnostic code No. – – OrderInspection operation item and probable causeOperation item and countermeasureReinstatement method 1Connected condition of connector Inspect 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 it securely. Main wiring harness ECU coupler Sub-wire harness couplerReinstated by turning the main switch ON and receives a 2Open or short circuit in wiring harness and / or sub lead.Repair or replace if there is an open or short circuit. Between meter coupler and ECU coupler yellow / blue - yellow / blue black / white - black / whitenormal signal. 3Malfunction in meterReplace the meter. 4Malfunction in ECUReplace the ECU. Fault code No.Er-3SymptomData from the ECU cannot be received correctly. Used diagnostic code No. – – OrderInspection operation item and probable causeOperation item and countermeasureReinstatement method 1Connected condition of connector Inspect 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 it securely. Main wiring harness ECU coupler Sub-wire harness couplerReinstated by turning the main switch ON and receives a 2Open or short circuit in wiring harness and / or sub lead.Repair or replace if there is an open or short circuit. Between meter coupler and ECU coupler yellow / blue - yellow / blue black / white - black / whitenormal signal. 3Malfunction in meterReplace the meter. 4Malfunction in ECUReplace the ECU.
7-24 FUEL INJECTION SYSTEMFI Fault code No.Er-4SymptomNon-registered data has been received from the meter. Used diagnostic code No. – – OrderInspection operation item and probable causeOperation item and countermeasureReinstatement method 1Connected condition of connector Inspect 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 it securely. Main wiring harness ECU coupler Sub-wire harness couplerReinstated by turning the main switch ON and receives a 2Open or short circuit in wiring harness and / or sub lead.Repair or replace if there is an open or short circuit. Between meter coupler and ECU coupler yellow / blue - yellow / blue black / white - black / whitenormal signal. 3Malfunction in meterReplace the meter. 4Malfunction in ECUReplace the ECU.
7-25 Order Job / Part Q’ty Remarks 1 2 3 4 5 6 7 8Removing the throttle bodies Seat Front cowling inner panel (left and right) Fuel tank Battery Air filter case Battery box and battery box bracket Sub-wire harness coupler Coolant temperature sensor coupler Balance hose (for CAL) Throttle body joint clamp screw Throttle bodies Throttle cable Throttle body joint Heat protector2 1 1 4 1 2 4 1Remove the parts in the order listed. Refer to “SEAT” in chapter 3. Refer to “COWLINGS” in chapter 3. Refer to “FUEL TANK” in chapter 3. Refer to “CHECKING AND CHARGING THE BATTERY” in chapter 3. Refer to “AIR FILTER CASE” in chapter 3. Refer to “BATTERY BOX AND BATTERY BOX BRACKET” in chapter 3. Disconnect Disconnect Disconnect Disconnect THROTTLE BODIESFI EAS00909 THROTTLE BODIES
7-26 Order Job / Part Q’ty Remarks 9 Plunger control unit hose 1 Disconnect For installation, reverse the removal procedure. THROTTLE BODIESFI
7-27 THROTTLE BODIESFI Order Job / Part Q’ty Remarks 1 2 3 4 5 6 7 8 9 10 11 12 13 14Removing the injectors Throttle position sensor coupler Intake air pressure sensor coupler Cylinder #1-injector coupler Cylinder #2-injector coupler Cylinder #3-injector coupler Cylinder #4-injector coupler Sub wire harness Negative pressure hose Intake air pressure sensor Fuel distributor Injector Throttle position sensor Fuel pulsation damper Throttle body assembly1 1 1 1 1 1 1 1 1 1 4 1 1 1Remove the parts in the order listed. Disconnect Disconnect For installation, reverse the removal pro- cedure. EAS00910 INJECTORS