Put the clip on for smogging and then take it off after. If you jack the Red Wire, its a "not good."
Besides why risk it when a simple clip unclip over an hour will do. Unclipping, if you have had it off for a few days or so will not cause a nonstart unless your battery is weak.
So run without the grey clip for a week or so, unclip, get smogged, pull round the corner and unclip so you charge on the way home LOL its easy to do.

Don't do the red wire cut, its dicey and unecessary.

 

Thanks Bob, I do feel more comfortable uncliping the battery current sensor cable and leaving it off for 51 weeks then reinstalling prior to smog and so on.
Does anyone have any long term info on leaving the sensor unclipped for this period of time?
In reading the system description from the 2012 QX56 charging system manual "battery current sensor detects the charging/discharging current of the battery" do others agree this is all it does?

Thanks

 

"Does anyone have any long term info on leaving the sensor unclipped for this period of time?
In reading the system description from the 2012 QX56 charging system manual "battery current sensor detects the charging/discharging current of the battery" do others agree this is all it does?

Thanks
[/QUOTE]
FYI: Mine has been unclipped for years and it does nothing other than keep my battery fully charged like other cars. No other codes are blocked, no issues.

 

I need some help on what you guys mean by the "clip". Was going to cut the wire (still looking for the diagram) and then I stumbled upon this. Anyone have a diagram or pic of what you are speaking of here?

 

Geez, don't cut wires, it is unnecessary. Here is the video. It is simple. 5 minutes. I did it 2 years ago. Never an issue after.