Make a long story short, we have a tractor that uses a Elobau 424.A11 series angle sensor for the electronic variable speed control, the tractor dealership believe the sensor is failed/failing and wants to replace it at great cost and zero guarantees it's even the problem, make matters worse they don't have the part and it'll take forever to order it in plus being electronic no returns.
The problem is something is causing the onboard computer to lock out the electronic throttle controls (all of them...) and we need them to regulate the speed of the motor.
It's harvest, we need this tractor working ASAP.
I'd like to try and bypass this sensor and simply inject 5ma or something into the system so the computer thinks the sensor is working properly and see if it'll start up, there are other controls we can use to regulate the speed IF the computer thinks this sensor is working and doesn't lock out the controls. OR if I inject a signal into the system and the tractor acts exactly the same I can call the dealership and tell them to come up with another theory why this $200K tractor won't throttle up properly...
I don't have my Fluke meter here so I have nothing to inject a current with, can someone come up with a way to output something like 5ma? I don't need it to be variable... all we have for power is the onboard 12V.
*Edit*
The simpler the better, I'm at the farm not in the city so I can't run to the local electornics depot to gab a handful of parts... likely I'll be scavenging all the parts from busted old electronics kicking around the farmyard. Yes I'm that desperate
The problem is something is causing the onboard computer to lock out the electronic throttle controls (all of them...) and we need them to regulate the speed of the motor.
It's harvest, we need this tractor working ASAP.
I'd like to try and bypass this sensor and simply inject 5ma or something into the system so the computer thinks the sensor is working properly and see if it'll start up, there are other controls we can use to regulate the speed IF the computer thinks this sensor is working and doesn't lock out the controls. OR if I inject a signal into the system and the tractor acts exactly the same I can call the dealership and tell them to come up with another theory why this $200K tractor won't throttle up properly...
I don't have my Fluke meter here so I have nothing to inject a current with, can someone come up with a way to output something like 5ma? I don't need it to be variable... all we have for power is the onboard 12V.
*Edit*
The simpler the better, I'm at the farm not in the city so I can't run to the local electornics depot to gab a handful of parts... likely I'll be scavenging all the parts from busted old electronics kicking around the farmyard. Yes I'm that desperate