Troubleshooting: Check that the speed sensor and the tone wheel are installed. If they are not, install
them. If they are, check the speed sensor retainer. If it is not OK, restore it. If it is, check if the tone
wheel has the correct number of teeth or if it is dirty, deformed or wrongly fixed. If it is not OK, replace
the tone wheel and if it is OK, replace the speed sensor.
5DA4 missing acceleration after pressure reduction: Faulty sensor or missing sensor/tone wheel
or excessive distance between the sensor and the tone wheel.
Troubleshooting: Check that the speed sensor and the tone wheel are installed. If they are not, install
them. If they are, check the speed sensor retainer. If it is not OK, restore it. If it is, check if the tone
wheel has the correct number of teeth or if it is dirty, deformed or wrongly fixed. If it is not OK, replace
the tone wheel and if it is OK, replace the speed sensor.
5DA5 excessive measured speed: Faulty sensor or tone wheel, or tone wheel with wrong number of
teeth or wrong tyre size.
Troubleshooting:Check that the speed sensor and the tone wheel are installed. If they are not, install
them. If they are, check the speed sensor retainer. If it is not OK, restore it. If it is, check if the tone
wheel has the correct number of teeth or if it is dirty, deformed or wrongly fixed. If it is not OK, replace
the tone wheel and if it is OK, check that the tyre size is the correct one. If it is not OK, replace it. If it is
OK, check that the tyre pressure is the correct one. If it is not OK, restore it; if it is OK, replace the speed
sensor.
Engine rpm sensor
ENGINE SPEED SENSOR
Function
It informs crankshaft position and speed to the
Marelli control unit.
Operation / Operating principle
Inductive sensor: sinusoidal-type generated volt-
age; two teeth are missing on the flywheel for the
reference position.
Level in electrical circuit diagram: engine spe-
ed sensor
Location:
•
on the vehicle: inside the flywheel cov-
er
•
connector (if available): near the Mar-
elli control unit
Electrical characteristics:
Electrical system DORSODURO 1200 ABS - ATC
ELE SYS - 136
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