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What would adding a resistor and diode to position sensor switch circuit?
DougSpindler:
I have a Chevy Volt which has the "Shift to Park" issue which prevents the car from powering down when you park it. People are having to leave their cars "running" when they parked. In my case it also prevents the car from engaging the HV batteries and drive motor leaving me stranded.
GM's fix is to install a 100 ohm resister and a diode which are in parallel. (Someone posted a pic, attached. I think they don't know how to use a multimeter to test a diode.) The resister/diode are in series with the shifter position sensor switch.
I'm also providing a link to the GM's "fix" https://static.nhtsa.gov/odi/tsbs/2020/MC-10171895-9999.pdf
What would a resister/diode do in this circuit?
Thanks
Gyro:
Please don't double post.
https://www.eevblog.com/forum/renewable-energy/any-chevy-volt-owners-with-the-shift-to-park-defect/
ataradov:
This looks more like an inductor, which would make a parallel diode make a bit more sense.
But without looking at the schematic, it is hard to tell what this actually does.
DougSpindler:
It's not a double post. In one post I'm asking how the circuit functions. In the Energy post I'm asking if anyone is having the Shift to Park issue.
DougSpindler:
--- Quote from: ataradov on November 06, 2021, 05:56:25 pm ---This looks more like an inductor, which would make a parallel diode make a bit more sense.
But without looking at the schematic, it is hard to tell what this actually does.
--- End quote ---
There's no schematic. What would an inductor do in a circuit with a switch? Sure looks like a resistor to me.
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