Had the typical VN/VP VSS issue with wiring insulation gone hard over time and exposure to heat, and subsequently broken off right against the plastic body of the sender. Not a big problem, just need to get all the red snot out to gain enough access to attach new wiring as I've done in the past. Only this time I managed to cause too much damage and despite my attempts to repair the thing is toast... oh well.
Anyway, I dug up an A3144 IC which is working happily on the bench so have attached that inside the housing instead and will wire it up. It appears that the recommended circuit uses a 10K pull-up resistor and a 0.1uF decoupling capacitor:
https://components101.com/a3144-hall-effect-sensor
I dug this up from an old post:
viewtopic.php?f=32&t=2688&start=10
which is a good start, but what about the cap? Does anyone know if the ECU handles this too, or should I add one inside the sensor housing?VL400 wrote:Yeah it will always have battery voltage, there is a 5k pull up resistor to ignition volts on pin A10. The trans speed sensor is a switch that just grounds A10 - if you quickly tap A10 to ground while logging you should see a speed register in TunerPro.
Thanks