Isolation Resistence, why do different cars have a different value..

[FloridaSun]

I talked with someone I know from a Kona EV facebook group and got the question why some cars have 1000 k ohm and others 3000k ohms isolation resistance? Does anyone know?

 

[mikeselectricstuff]

As it's such a round number I'd guess it's the limit of measurement - either different hardware of firmware.

 

[KiwiME]

Mine reads 3000 but I see the max value in the PID is 1000. I'm not sure we have any evidence that the value is trustworthy in any case.

000_Isolation Resistance Surge Resistor 0x220101 ((bf<8)+bg) 0 1000 kOhm 7E4

 

[ttsherpa]

As far as I know in my Kona 2020 the latest BMS update changed the resistance value from 1000 kOhm to 3000 kOhm

 

[CR123]

My Kona still has 1000kOhm after 960 (00D005) and 196 (01D076) campaigns.
I started this conversation in other forum.
https://www.speakev.com/threads/surge-resistor-changed-after-update.155916/#post-2945188.

 

[Wildeyed]

This forum has become virtually useless. A shame really.

 

[KiwiME]

I talked with someone I know from a Kona EV facebook group and got the question why some cars have 1000 k ohm and others 3000k ohms isolation resistance? Does anyone know?

I tried setting the parameter max limit to 10,000 and then 1,000. In both cases it always read 3,000.

 

[CR123]

More information about this.
1000 kOhm is an indicator that campaign 196 (01D072) didn´t update correctly.

Now my car has 3000kOhm and passed two more campaign 00D111 and 00D118.