Toyota 3.4 Swap - OBD2 Wiring Guide

For those who may need some help with OBD2 wiring on their Toyota 3.4 swap.

[analogx]

Haha, I never grabbed the 4th plug, so I ended up soldering my obd2 port right to the ecm pins haha. Watching this makes me miss my 4runner in the early days :(

[PatriotPits]

It’s a shielded wire to prevent stray voltage from
altering the signal wire. One end gets taped off the other end gets grounded. May want to check the rest of your shielded wires going to the ecm. Or all the grounds in general. You know the ecm doesn’t control power flow. It switches grounds. Power is constant at most connections (like the starter for example) just waiting for a ground (starter signal wire) to ground out to complete the circuit. A bad or loose ground can cause all kinds of random issues

[DavidToyotaHead]

HAHAHA glad I wasn't the only one that thought to make a OBDII wiring video for 3.4 swaps. If your still running an auto ecu with your manual trans I have a video for those annoying codes.

[alfredovalle]

sure we want more 3.4 swap videos make u one of wiring harness thanks buddy nice video

[thebackyardgarage]

Hey man, out of curiosity, what were the other two wires in that ecm plug you had wired up? I didn't know there were any other wires needing wired up there besides the obd2

[spago]

Which Pin on the right most connector is the signal wire for the OBD2 plug? Is it Pin 18(SDL)?

[varmint]

Is this the same with a 86 4Runner with a 96 distributor 2rz ?

[heshooalmsallaty]

Hey brother. Lookin for help, I need the feed wiring diagram for the ecm 2000 5vz-fe

[alfredovalle]

probably easier with diagrams buy its kinda hard to read em make it a video of the wiring buddy and thanks

[ndspeedster]

apparently there are no barbers in your town

[manuelamaya]

Thanks, dont speak english, you can to white pin conection?