Yamaha R1 2004 ServiceManual
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7-17 Intake air pressure sensor output voltage 3.75 4.25 V Tester positive probe pink / white Tester negative probe black / blue 1 2 FUEL INJECTION SYSTEMFI Fault code No.13SymptomIntake air pressure sensor – open or short circuit detected. Used diagnostic code No. 03 (intake air pressure sensor) 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. Intake air pressure sensor coupler Main wiring harness ECU coupler Sub-wire harness couplerReinstated by turning the main switch ON. 2Open or short circuit in wiring harness and / or sub lead.Repair or replace if there is an open or short circuit. Between sensor coupler and ECU coupler Black / Blue – Black / Blue Pink / White – Pink / White Blue – Blue 3Defective intake air pressure sensorExecute the diagnostic monitoring mode (Code No.03). Replace if defective. 1. Connect the pocket tester (DC 20 V) to the intake air pressure sensor coupler terminal as shown. 2. Set the main switch to “ON”. 3. Measure the intake air pressure sensor output voltage. 4. Is the intake air pressure sensor OK?
7-18 FUEL INJECTION SYSTEMFI Fault code No.14SymptomIntake air pressure sensor – hose system malfunction (clogged or detached hose). Used diagnostic code No. 03 (intake air pressure sensor) OrderInspection operation item and probable causeOperation item and countermeasuerReinstatement method 1Intake air pressure sensor hose detached, clogged, kinked, or pinched. Intake air pressure sensor malfunction at intermediate electrical potential.Repair or replace the sensor hose. Inspect and repair the connection.Reinstated by starting the engine and operating it at 2Connected condition of connector Intake air pressure sensor coupler Main wiring harness ECU couplerCheck the coupler for any pins that may have pulled out. Check the looking condition of the coupler. If there is a malfunction, repair it and connect it securely.idle. 3Defective intake air pressure sensor.Execute the diagnostic mode (Code No.03). Replace if defective. Refer to “Fault code No. 13”.
7-19 FUEL INJECTION SYSTEMFI Fault code No.15SymptomThrottle position sensor – open or shrt circuit detected. Used diagnostic code No. 01 (throttle position sensor) OrderInspection operation item and probable causeOperation item and countermeasureReinstatement method 1Installed condition of throttle position sensor.Check the installed area for looseness or pinching. Check that it is installed in the specified position. Refer to “THROTTLE BODIES” section.Reinstated by turning the main switch ON. 2Connected 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. Throttle position sensor coupler Main wiring harness ECU coupler Sub-wire harness coupler 3Open or short circuit in wiring harness and / or sub lead.Repair or replace if there is an open or short circuit. Between sensor coupler and ECU coupler Black / Blue – Black / Blue Yellow – Yellow Blue – Blue 4Throttle position sensor lead wire open circuit output voltage check.Check for open circuit and replace the throttle position sensor. Black / Blue – Yellow Open circuit item Output voltage Ground wire open 5 V circuit Output wire open 0V circuit Power supply wire 0V open circuit 5Defective throttle position sensor.Execute the diagnostic mode (Code No.01). Replace if defective. Refer to “THROTTLE BODIES” section. Fault code No.16SymptomStuck throttle position sensor detected. Used diagnostic code No.01 (throttle position sensor) OrderInspection operation item and probable causeOperation item and countermeasureReinstatement method 1When detecting fault code No.15.Refer to “Fault code No.15”.Reinstated by 2Installed condition of throttle position sensor.Check the installed area for looseness or pinching. Check that it is installed in the specified position. Refer to “THROTTLE BODIES” section.starting the engine, operating it at idle and then3Defective throttle position sensorExecute the diagnostic mode (Code No.01). Replace if defective. Refer to “THROTTLE BODIES” section.idle, and then racing it.
7-20 FUEL INJECTION SYSTEMFI EXUP servomotor resistance (when the pulley is turned once) 5.25 9.75 kΩ at 20C (68F) Positive tester terminal blue Negative tester probe white / red 1 2 Fault code No.17SymptomEXUP servo motor potention circuit – open or short circuit detected. Used diagnostic code 53 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. EXUP servo motor coupler Main wireharness ECU couplerReinstated by turning the main switch ON. 2Open or short circuit in wire harness.Repair or replace if there is an open or short circuit. Between motor coupler and ECU coupler Blue – Blue White / Red – White / Red Black / Blue – Black / Blue 3Defective EXUP servo motor potention circuit.Execute the diagnostic mode (Code No.53). Replace if defective. 1. Disconnect the EXUP servomotor coupler from the wire harness. 2. Connect the pocket tester (Ω 1k) to the EXUP servomotor coupler. 3. While slowly turning the EXUP servomotor pulley, measure the EXUP servomotor resis- tance. 4. Is the EXUP servomotor OK?
7-21 FUEL INJECTION SYSTEMFI To prevent damaging the EXUP servomo- tor, perform this test within a few seconds of connecting the battery. Positive battery terminal black / green Negative battery lead black / red 1 2 CAUTION: Fault code No.18SymptomEXUP servo motor is stuck. Used diagnostic code 53 OrderInspection operation item and probable couseOperation 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 couplerIf there is a malfunction repair it and connect it securely. EXUP servo motor coupler Main wire harness ECU coupler.Reinstated by turning the main switch ON. It takes 120 2Open or short circuit in wire harness.Repair or replace if there is an open or short circuit. Between motor coupler and ECU coupler. Black / Green – Black / Green Black / Red – Black / Redseconds at the maximum before the original state returns. 3Defective EXUP servo motor.Execute the diagnostic mode (Code No.53). Replace if defective. 1. Disconnect the EXUP cables from the EXUP servomotor pulley. 2. Disconnect the EXUP servomotor coupler from the wire harness. 3. Connect the battery leads to the EXUP servo- motor coupler as shown. 4. Check that the EXUP servomotor pulley ro- tates several times. 5. Does the EXUP servomotor pulley turn? 4Defective EXUP valve, pulley, cable.Replace if defective
7-22 FUEL INJECTION SYSTEMFI Fault code No.19SymptomOpen circuit in the input line of ECU No.15 terminal is detected. Used diagnostic code No. 20 (sidestand switch) OrderInspection operation item and probable causeOperation item and countermeasureReinstatement method 1Connected condition of connector Main wiring harness ECU coupler (No.15 pin) Execute the diagnostic mode (Code No.20). Check 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 connected it securely.If the transmission is in gear, it is reinstated by retracting the sidestand. If the 2Open or short circuit in wiring harness and / or sub lead.Repair or replace if there is an open or short circuit. Between sidestand switch coupler and ECU coupler Blue / Black – Blacktransmission is in neutral, it is reinstated by reconnecting the wiring. 3The malfunction of the sidestand switch.Replace if defective. Refer to “CHECKING THE SWITCHES” in chapter 8. Fault code No.20SymptomDefective values are detected due to the internal malfunction of the intake air pressure sensor or the atmospheric pressure sensor. Used diagnostic code No. 02 (atmospheric pressure sensor) 1 03 (intake air pressure sensor) 2 OrderInspection operation item and probable causeOperation item and countermeasureReinstatement method 1Defective atmospheric pressure sensorExecute the diagnostic mode (Code No.02). Replace if defective. Refer to “Fault code No.23”.Reinstated by turning the main switch 2Defective intake air pressure sensorExecute the diagnostic mode (Code No.03). Replace if defective. Refer to “Fault code No.13”.ON.
7-23 FUEL INJECTION SYSTEMFI Fault code No.21SymptomOpen or short circuit is detected from the coolant temperature sensor. Used diagnostic code No. 06 (coolant temperature sensor) 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. Coolant temperature sensor coupler Main wiring harness ECU coupler Sub-wire harness couplerReinstated by turning the main switch ON. 2Open or short circuit in wiring harness and / or sub lead.Repair or replace if there is an open or short circuit. Between sensor coupler and ECU coupler Black / Blue – Black / Blue Green / White – Green / White 3Defective coolant temperature sensor.Execute the diagnostic mode (Code No.06). Replace if defective. Refer to “COOLING SYSTEM” in chapter 8.
7-24 FUEL INJECTION SYSTEMFI Intake air temperature sensor resistance 2.21 2.69 kΩ at 20C (68F) Tester positive probe brown / white Tester negative probe black / blue 1 2 12 Handle the intake air temperature sensor with special care. Never subject the intake air temperature sen- sor to strong shocks. If the intake air temper- ature sensor is dropped, replace it. WARNING Fault code No.22SymptomOpen or short circuit detected from the intake temperature sensor. Used diagnostic code No. 05 (intake temperature sensor) 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. Intake temperature sensor coupler Main wiring harness ECU coupler Sub-wire harness couplerReinstated by turning the main switch ON. 2Open or short circuit in wiring harness and / or sub lead.Repair or replace if there is an open or short circuit. Between sensor coupler and ECU coupler Black / Blue – Black / Blue Brown / White – Brown / White 3Defective intake temperature sensor.Execute the diagnostic mode (Code No.05). Replace if defective. 1. Remove the intake air temperature sensor from the air filter case. 2. Connect the pocket tester (Ω 100) to the intake air temperature sensor terminal as shown. 3. Measure the intake air temperature sensor resistance. 4. Is the intake air temperature sensor OK?
7-25 FUEL INJECTION SYSTEMFI Atmospheric pressure sensor output voltage 3.75 4.25 V Tester positive probe pink Tester negative probe black / blue 1 2 Fault code No.23SymptomOpen or short circuit detected from the atmospheric pressure sensor. Used diagnostic code No. 02 (atmospheric pressure sensor) 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. Atmospheric pressure sensor coupler Main wiring harness ECU couplerReinstated by turning the main switch ON. 2Open or short circuit in wiring harness.Repair or replace if there is an open or short circuit. Between sensor coupler and ECU coupler Blue – Blue Black / Blue – Black / Blue Pink – Pink 3Defective atmospheric pressure sensor.Execute the diagnostic mode (Code No.02). Replace if defective. 1. Connect the pocket tester (DC 20 V) to the atmospheric pressure sensor coupler terminal as shown. 2. Set the main switch to “ON”. 3. Measure the atmospheric pressure sensor out- put voltage. 4. Is the atmospheric pressure sensor OK?
7-26 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 ON3Connected 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 cannot be restarted unless the main switch is 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 emergency stop switch coupler as shown. 4. When turn the lean angle cut-off switch approx. 65, the voltage reading is 0.4 V to 4.4 V. 5. Is the emergency stop switch OK? main switch is first turned OFF).