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Harness for OBD2 connector? (re: +12V/GND) ...and do I need IDLE MODE wire?

0 votes
I'm installing an EVO-ONE with T-harness into my 2018 Toyota RAV4 Hybrid.

However, the installation manual (https://cdn02.fortin.ca/download/71281/evo-one_ig_thr_bi_toy6-rav4-hyb_2017_pts_a_71281.pdf) shows an optional wire for "IDLE MODE" that connectrs to the wiring behind the PTS button?

It says optional but what am I missing if I don't connect it?  Is it worth connecting?

Also, even though I've purchased the T-harness, the instructions show that I need to connect to the OBD2 wires for +12V and GND.  Do I need to cut these wires behind the OBD2 connector or is there an easier or other recommended place to connect the wires?
asked Nov 19, 2019 in Toyota by John Klimek (430 points)

1 Answer

0 votes
12v and gnd is a a simple splice. Do not cut the wires.


Idle mode, also called pit stop mode, is remote starter feature that allows the user to let the engine run if you need to make a quick run to a store or something but want to leave the car running. The connection is what shuts down the car. It's optional connection but I would highly suggest doing it anyway,
answered Nov 19, 2019 by Robert T (284,630 points)
Robb, thanks again for your comments and help!

What do you mean by, "do not cut the wires"?  According to the instructions, I need to connect the +12V and GND from the EVO to the OBD2 connection wires.

I'd rather not use a "T-tap" but I've found "POSI Taps" which are alternate wire taps that look more reliable.

I'm also not against soldering (I have lots of experience soldering electronics, multiple soldering irons, lots of soldering tips, etc), but I am trying to make this install as clean as possible.

Thanks again for any and all your help!

I'd rather not use a "T-tap" but I've found "POSI Taps" which are alternate wire taps that look more reliable.

Neither of those are not reliable connections and tend to chop right through wiring or just ruin the integrity of the factory wiring. Look up military splice or poke and twist. It's all up you though.