Question about 1998 Toyota 4Runner

1 Answer

1998 Toyota 4Runner AMP + Radio doesn't work (externally)

So, I took out my Toyota Radio in my 4Runner and put in a NAV unit w/Bluetooth….(love it BTW). So I have the Toyota radio and the amp now and thought, rather than chuck this, why not make a garage radio and recycle this thing. I do stuff like this a lot and familiar with basic wiring. So I got the schematic, and located all the +- speaker leads, and the +- 12V leads, and then there are a few wires which their purpose isn’t noted, but are labeled in the schematic posted at:http://www.installdr.com/Harnesses/Toyota-Wiring.pdf as “DO NOT USE.” I connect the unit up to 12V power source, the amp is getting power, and in turn passing it to the radio. I’ve grounded each chassis to the negative terminal, but the radio blinks on and off. I’m sure it’s code for, “You’ve got a short somewhere you idiot!” but I can’t find it. I’ve since checked the radio by plugging it back into the car and it works fine, without entering anti-theft codes. With my Porsche, if I unhook the radio from power, I have to re-enter the code to use it in the car. The Toyota radio, I unhook and re-plug it into the car, it’s fine. If I run the radio externally I get the blinking and no sound or function.

I did a little more research and the three leads that are labeled “DO NOT USE,” in the diagram, “J”, “N”, & “O” are as follows:
J is for Radio illumination
N is empty
O is for amp trigger (I assume this means it’s sending a voltage signal to turn it on/off) but I’m unclear on this


My guess is that I have to learn what the voltage signal the amp is looking for, because I’m pretty sure I have all the positive/neg leads correct, and I’ve grounded each related chassis to negative ground.
Thoughts? Is there something I'm missing?

Posted by on

  • dukfootball Feb 03, 2009

    bcbandit666, Thank you for the reply. I'm currently running 12 volts into the "switched" and "unswitched" leads. I'm assuming you're calling the "memory wire" as another term for the "unswitched" (always on)+ lead? On the diagram noted, "C & D" are switched and unswitched leads. "O" is the amp trigger. How would you recommend I wire the amp trigger? I don't know what information (voltage/amp) it needs.I'm concerned too, that "J' (Radio Illumination) may somehow be involved too. :-I

    Thanks again for your assistance!

×

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 190 Answers

Sounds like you need the memory wire hooked up.

If the memory wire is Not used, you will get 1 of 3 things,
1 no Sound.
2 no Info, Like the Clock or Station
and 3 "IF the amp is wired Right" you would send the power Backwards to the radio.

Not to mention the voltage for the Amp Trigger is 12+ volts Just low Amps,

So you could wire Just the Radio With 1 ground, 2 hots And Ground the Radio Case, INcase the Radio is using the Ant as a Ground.

Hope this Helps.

Posted on Feb 03, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

What if dome fuse doesn`t fix the radio and clock?


Be sure there is not an inline fuse to the radio/clock and check the wiring and plugs

May 28, 2014 | 1998 Toyota 4Runner

2 Answers

Prius radio


Normally the car displays a message saying it is turning the radio off to conserve the 12v battery...

Apr 06, 2017 | Toyota Prius Cars & Trucks

1 Answer

I have a 2004 Avalon with factory JBL system. The radio actually sounds fine but I would like to have USB, Bluetooth, Aux, remote control, HD radio, etc... I realize that can be done but it looks like I...


It sounds to me the only thing that's available to you is to switch out the head unit. It's the only way you're going to get all those other things. I hope this helps

Sep 06, 2017 | 2004 Toyota Avalon

1 Answer

Radio lights & clock not working


Your dome light fuse is bad. It controls all 3 items that you have the issue with.

Sep 01, 2009 | 2000 Toyota 4Runner

1 Answer

Radio just didn't go on...


On a 2000 4Runner, there are two fuses that control the radio. They are:
15 amp ACC
and
15 amp DOME
If both fuses are good, you have an internal issue in the radio assembly.
The graciousness of a FixYa rating would be greatly appreciated.

Dec 30, 2008 | 2000 Toyota 4Runner

1 Answer

Fuse for Radio & Digital Clock


Please check the harness of the radio and wiring there could be short in the wiring which is causing this problem.......................

good luck.............



Jun 12, 2008 | 1998 Toyota 4Runner

Not finding what you are looking for?
1998 Toyota 4Runner Logo

615 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts

yadayada
yadayada

Level 3 Expert

77499 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8826 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...