Malaguti Dune X 125, Service Station Manual

Page: 87 / 272

Dune 125 - Dune X 125 - Euro 4
Electrical system
ELE SYS - 87
Engine rpm sensor
Function
It informs crankshaft position and speed to the Marelli control unit
Operation / Operating principle
Inductive sensor: sinusoidal-type generated voltage; two teeth are missing on the flywheel for the ref-
erence position
Level in electrical circuit diagram
Engine speed sensor
Position

Sensor: LH side of motorcycle, near flywheel

Connector: ...
Electrical specifications
Winding resistance 105-124 Ω at 20°
Pin-out
Engine revolution sensor positive signal (X2)
Engine revolution sensor negative signal (X1)
Engine speed sensor anti-disturbance cable (blue)
Diagnostic tool - Parameters and statuses

Engine speed - (rpm)

Target engine revs - (rpm) (Parameter valid at idle, setting depends especially on
engine temperature: the ECU unit will try to keep the engine running at this revs,
acting on the ignition advance)
Diagnostic tool - Electrical errors
Engine revolution sensor P0336 - inconsistent signal
Cause of error

Possible false contact in the electric circuit detected at PIN 20 and 29 of the engine
control unit connector
Troubleshooting

Check the electric circuit is in good conditions and the flywheel teeth cleaning and
correct positioning of the sensor in its own housing; if it is not, replace it. If it is OK,
replace the sensor