Yamaha RX10RTL Supplemental Service Manual

Also see for RX10GTL: Owner's manual

Yamaha RX10RTL Supplemental Service Manual Manual pdf 142 page image

FISUBSTITUTE CHARACTERISTICS OPERATION CONTROL (FAIL-SAFE ACTION)If the ECU detects an abnormal signal from a sensor while the vehicle is being driven, the ECU illu-minates the engine trouble warning light and provides the engine with alternate operating instruc-tions that are appropriate for the type of malfunction.When an abnormal signal is received from a sensor, the ECU processes the specified values thatare programmed for each sensor in order to provide the engine with alternate operating instructionsthat enable the engine to continue to operate or stop operating, depending on the conditions.The ECU takes fail-safe actions in two ways: one in which the sensor output is set to a prescribedvalue, and the other in which the ECU directly operates an actuator. Details on the fail-safe actionsare given in the table below.FAIL-SAFE ACTIONS TABLEFaultCode No. Item Symptom Fail-safe action Able/unableto startAble/unableto drive11Cylinder identificationsensorNo normal signals are receivedfrom the cylinder identificationsensor.Continues to operate the enginebased on the results of thecylinder identification thatexisted up to that point.Unable Able12Crankshaft positionsensorNo normal signals are receivedfrom the crankshaft positionsensor.• Stops the engine (by stoppingthe injection and ignition). Unable Unable1314Intake air pressuresensor (open or shortcircuit) (pipe system)Intake air pressure sensor-openor short circuit detected.Faulty intake air pressure sensorsystem.• Fixes the intake air pressure to85.0 kpa. Able Able1516Throttle position sensor(open or short circuit)(stuck)Throttle position sensor-open orshort circuit detected.• Fixes the throttle positionsensor to fully open. Able Able20Intake air pressureAtmospheric pressureDefective values are detecteddue to the internal malfunction.• Fixes the intake air pressureand atmospheric pressure to85.0 kpa.Able Able21Coolant temperaturesensorCoolant temperature sensor-open or short circuit detected.• Fixes the coolant temperatureto 60°C. After the enginestarts, the radiator fan relay willbe turned ON.Able Able22 Intake temperaturesensorIntake temperature sensor-openor short circuit detected.• Fixes the intake temperature to0°C. Able Able23Atmospheric pressuresensor (open or shortcircuit)Atmospheric pressure sensor-open or short circuit detected.• Fixes the atmosphericpressure to 85.0 kpa. Able Able30 Oil pressure dropped Engine stops when the oilpressure drop is detected.• Fuel pump and fuel injectionare stopped. (Main relay is off.) Unable Unable33343536Faulty ignition Open circuit detected in theprimary lead of the ignition coil.• Cut the injection of othercylinder in the same group withthe cylinder that the error isdetected.(Example: when the #1cylinder is detective, cut theinjection of #1 and #4cylinders, when the #2 cylinderis detective, cut the injection of#2 and #3 cylinders).Turn on the power to the airinduction solenoid to alwayscut-off the air.Able(dependingon thenumber offaultycylinders)Able(dependingon thenumber offaultycylinders)42Speed sensor, neutralswitchNo normal signals are receivedfrom the speed sensor; or, anopen or short circuit is detectedin the neutral switch.• Fixes the gear to the top gear.Able Able43Fuel system voltage(monitor voltage)The ECU is unable to monitorthe battery voltage (an opencircuit in the line to the ECU).• Fixes the battery voltage to 12 V.Able AbleFUEL INJECTION SYSTEM61