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Thread: Bypassing overturning sensor

  1. #1
    apriliaforum newb kreon's Avatar
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    May 2012
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    Moscow, Russia
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    Bypassing overturning sensor

    Good time.
    I've got Aprilia Pegaso Strada 2006. Today I've seen a 'SERVICE' message on dashboard.
    ECU diagnostics showed me 'Seq 41 Overturn sens. lead' error.
    The sensor is broken.

    Overall:

    I have 3 wires: blue/red, brown/yellow and brown/white.
    How to compile this wires and other electic elements ( transistors, resistors, etc ) to bypass this sensor's checking.
    I'll buy the new one, but delivery time to Russia is over a month, so I need to ride this time.

    Thanks for reading and sorry for my bad english.

  2. #2
    apriliaforum prov-nov Dartist's Avatar
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    Quote Originally Posted by kreon View Post
    Good time.
    I've got Aprilia Pegaso Strada 2006. Today I've seen a 'SERVICE' message on dashboard.
    ECU diagnostics showed me 'Seq 41 Overturn sens. lead' error.
    The sensor is broken.

    Overall:

    I have 3 wires: blue/red, brown/yellow and brown/white.
    How to compile this wires and other electic elements ( transistors, resistors, etc ) to bypass this sensor's checking.
    I'll buy the new one, but delivery time to Russia is over a month, so I need to ride this time.

    Thanks for reading and sorry for my bad english.

    Hi Kreon
    I just saw your post, I don’t have long to write this but I will try to give some useful info.
    Error 41 says open or short circuit. so check that the sensor is connected and no wires are damaged. Do not check the sensor with an ohms meter.
    If the sensor is unplugged (open circuit) the engine will not run.
    The sensor is on the 5 volt circuit.
    Bike upright (less than 65 degrees of lean) it passes low voltage 0.4 – 1.4 volts.
    Bike fallen (more than 65 degrees) high voltage 3.7 – 4.4 volts
    Note that there is never a totally open or total closed circuit.
    Brown / Yellow wire from pin 13 on ECU gives the +5 volt common supply.
    Blue / Red wire on pin 28 is the 5 volt circuit common return.
    I am guessing these are OK because you do not have any other faults showing.
    Brown / White wire going to pin 7 is the signal that the ECU is looking for.
    Check for the voltages at the sensor connector.
    I have never tried to by-pass this sensor so I am not sure exactly what you will need.
    And I am not an electronics engineer.
    I suspect it will be happy if you connect Brown / Yellow to Blue / Red and then put a resistor from those wires to the Brown / White. But what resistance value?
    We do not know enough about the circuit or the sensor. It is going to be a low resistance so experiment with a variable resistor. If it is happy with the connections and the resistance is too high you should get error 30, and when the resistance is right the error will go.
    I hope I am right and you get it working.

  3. #3
    apriliaforum newb kreon's Avatar
    Join Date
    May 2012
    Location
    Moscow, Russia
    Posts
    15
    Replaced with Yamaha R6 fall sensor.
    Dartist, thanks for your help.

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