2015 4Runner - Head Unit stays on once Vehicle is turned off

zephyr
New User
Posts: 11
Joined: Thu Jun 29, 2017 5:37 pm

Re: 2015 4Runner - Head Unit stays on once Vehicle is turned off

Post by zephyr » Sun Dec 03, 2017 3:10 pm

Can you be more specific about which ignition lead you suspect isn't being powered, and what system isn't being powered during remote start? Is it the vehicle computer not being powered? Is it the MRR not being powered?

This link is the install guide for the remote start.
https://www.directeddealers.com/manuals ... _Guide.pdf

zephyr
New User
Posts: 11
Joined: Thu Jun 29, 2017 5:37 pm

Re: 2015 4Runner - Head Unit stays on once Vehicle is turned off

Post by zephyr » Sun Dec 03, 2017 11:07 pm

Completed further troubleshooting, as follows:

Checked each lead from the vehicle harness for voltage in both the accessory position and after remote start but before key takeover:
Image
Image

Code: Select all

Top Row:
Acc:  .07   X   X   1.9
Rem:  .06   X   X   1.9
Bottom Row:
Acc:  .06   X   0   1.9
Rem:  .06   X  .03  1.9
Image
Image

Code: Select all

Top Row:
Acc:   0   .02   X   X   11.8   11.7
Rem:   0   .02   X   X   13.8   13.8
Bottom Row:
Acc:   0   .02   0   X   X      0
Rem:   0   .02   0   X   X      13.7
Also, observed the single wire from the OBD2 port:

Code: Select all

Acc:  7.96
Rem:  9.1
Image
I also observed the MRR unit power on with a green light in both ACC and after remote start.

If everything is powered the same in both ACC and remote start positions, why does the radio display a "Ignition is OFF" advisory?

Which lead to the TO2 harness needs to receive power during remote start to tell the MRR and radio that the car is on?

User avatar
Dara DeGrand
ADS Team
Posts: 4802
Joined: Mon Dec 02, 2013 1:34 pm

Re: 2015 4Runner - Head Unit stays on once Vehicle is turned off

Post by Dara DeGrand » Tue Dec 05, 2017 8:45 am

It's not that the TO2 is missing an input, it's that something in the car isn't being powered properly when you remote start, the same way that the key does it.

It could be as simple as an ignition not being hooked up, or an ignition accidentally being powered like an accessory. It's hard to say, as I'm not able to see it firsthand, and this issue isn't something we've seen before with an aftermarket starter.
Dara DeGrand
Maestro Technical Support Manager
Automotive Data Solutions Inc.
8400 Bougainville, QC
T 514.807.2888
TF 866.427.2999

Post Reply

Return to “TO2 radio replacement solution”