1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site
    Quick Links: Does Toyota give the option to ship a SE port Tacoma to OR? Driver Seat Back Issues LED Fog Light Replacement Bulb Tacoma Quick Reference Guide Those 2 little threaded holes in the front of your bed... Toyota parts online--Free shipping

Un identified plug at drivers firewall

Discussion in '3rd Gen. Tacomas (2016-2023)' started by patricknola, Oct 22, 2022.

  1. Oct 22, 2022 at 9:49 AM
    #1
    patricknola

    #1
    patricknola [OP] Member

    Joined:
    Oct 22, 2022
    Member:
    #408598
    Messages:
    14
    Gender:
    Male
    First Name:
    Patrick
    Vehicle:
    2019 Toyota Tacoma TRD Pro
    Lifted
    Hey guys, I've got a 2019 toyota tacoma trd pro I just purchased. It's giving me a pre collision system malfunction dashboard warning so I obd2 scanned it and the scanner is telling me there is no communication with the blind spot monitor slave unit. I'm trying to fix this without taking it to the dealer so as I was looking around the truck I noticed a plug that wasn't plugged into anything, inside the truck at drivers foot firewall loctation near all the other wiring harness plugs. Is this normally like this? Or can anyone identify the plug.I'v attached to pics. TIA

    Resized_20221022_114142.jpg
    Resized_20221022_114126.jpg
     
    patricknola, Oct 22, 2022
    #1
  2. Oct 22, 2022 at 9:51 AM
    #2
    caribe makaira

    #2
    caribe makaira Well-Known Member

    Joined:
    Feb 13, 2011
    Member:
    #51121
    Messages:
    11,714
    Gender:
    Male
    Caribbean, Puerto Rico
    Vehicle:
    05 PreRunner TRD Offroad AutoTrans
    Hood Struts, My version Fogs always ON, Map & Overhead Light Mod,
    Towing electrical brake module connection.
    upload_2022-10-22_12-54-3.jpg
     
    caribe makaira, Oct 22, 2022
    #2
    RelentlessFab, vicali and Chew like this.
  3. Oct 22, 2022 at 9:58 AM
    #3
    Chew

    #3
    Chew Not so well known user

    Joined:
    Mar 6, 2019
    Member:
    #285575
    Messages:
    8,306
    Gender:
    Male
    First Name:
    Chewy
    Midwest
    Vehicle:
    19 TRD OR
    Amazon dog poo bed mat mod
    Good catch! I was just trying to doctor a screenshot too.
    It definitely looks like some F’ery has taken place. OP I’d double check anything that was molested or modified from the factory.
     
    Chew, Oct 22, 2022
    #3
    whatstcp[QUOTED] likes this.
  4. Oct 22, 2022 at 9:59 AM
    #4
    Rock Lobster

    #4
    Rock Lobster Thread Derailer

    Joined:
    Dec 14, 2018
    Member:
    #275833
    Messages:
    13,199
    Gender:
    Male
    First Name:
    Ryan
    Dee Eff Dub
    Vehicle:
    I drive a Miata.
    That probably also went to the trailer brake controller. Whoever uninstalled it did the world's laziest job at it.
     
    Rock Lobster, Oct 22, 2022
    #4
    daveeasa, vicali and whatstcp[QUOTED] like this.
  5. Oct 22, 2022 at 10:04 AM
    #5
    Chew

    #5
    Chew Not so well known user

    Joined:
    Mar 6, 2019
    Member:
    #285575
    Messages:
    8,306
    Gender:
    Male
    First Name:
    Chewy
    Midwest
    Vehicle:
    19 TRD OR
    Amazon dog poo bed mat mod
    I cringe when I see used vehicles with trailer brake controllers added. I know not everyone does, but over the years I have had numerous friends that buy new, beat the ever living fork out of a truck for 1-3 years and trade it off and repeat. Some say "oh it's fine, it can handle it" and some say "not my problem; it'll be someone else's in another few months, I won't even put tires or brakes on it"
     
    Last edited: Oct 22, 2022
    Chew, Oct 22, 2022
    #5
    AxisCab likes this.
  6. Oct 22, 2022 at 10:04 AM
    #6
    patricknola

    #6
    patricknola [OP] Member

    Joined:
    Oct 22, 2022
    Member:
    #408598
    Messages:
    14
    Gender:
    Male
    First Name:
    Patrick
    Vehicle:
    2019 Toyota Tacoma TRD Pro
    Lifted
    what does the Towing electrical brake module connection plug into?
     
    patricknola, Oct 22, 2022
    #6
  7. Oct 22, 2022 at 10:05 AM
    #7
    Chew

    #7
    Chew Not so well known user

    Joined:
    Mar 6, 2019
    Member:
    #285575
    Messages:
    8,306
    Gender:
    Male
    First Name:
    Chewy
    Midwest
    Vehicle:
    19 TRD OR
    Amazon dog poo bed mat mod
    Chew, Oct 22, 2022
    #7
  8. Oct 22, 2022 at 10:06 AM
    #8
    EatSleepTacos

    #8
    EatSleepTacos Well-Known Member

    Joined:
    Mar 24, 2015
    Member:
    #151688
    Messages:
    59,828
    Gender:
    Male
    First Name:
    Randy
    West Valley, AZ
    Vehicle:
    2017 4Runner
    The other half is a pigtail harness that you connect to an aftermarket trailer brake controller. The plug under the dash remains loose unless you add a controller.
     
    EatSleepTacos, Oct 22, 2022
    #8
  9. Oct 22, 2022 at 10:10 AM
    #9
    vicali

    #9
    vicali Touch my camera through the fence

    Joined:
    May 20, 2010
    Member:
    #37503
    Messages:
    2,675
    Gender:
    Male
    First Name:
    mike
    Kam,BC
    Vehicle:
    2017 TRD Sport 1D6
    Just put a P2 into a family Tacoma this morning, I’m guessing someone pulled a controller off that truck and clipped the ground..
     
    vicali, Oct 22, 2022
    #9
  10. Oct 22, 2022 at 10:14 AM
    #10
    patricknola

    #10
    patricknola [OP] Member

    Joined:
    Oct 22, 2022
    Member:
    #408598
    Messages:
    14
    Gender:
    Male
    First Name:
    Patrick
    Vehicle:
    2019 Toyota Tacoma TRD Pro
    Lifted
    Ok, so back to the pre collision system malfunction warning. My scanner is telling me the system has lost communication with the blind spot monitor slave unit. I just purchased this truck from an auction, it was wrecked and the rear bumper is definetly tweaked (crooked) could this be the problem? The postion of the blind spot monitors due to the mis allignment of the bumper?
     
    patricknola, Oct 22, 2022
    #10

Products Discussed in

REDARC Tow-Pro Elite Electric Trailer Brake Controller Kit – Dual Braking Modes, Active Calibration, Inertia Sensing, Manual Override for Trailer Sway, Compatible with 12V/24V Systems
$240.00
To Top