Head unit problem.

[EJ1 Coupe]

I have a power tester (it has a light when there is a signal power and you connect it to the chassis) . when i turned the stereo on my rear speakers wire was lose and was touching the chassis and my deck went into protect mode then the deck turned off now every time i try and turn it on the deck wont turn on. And when i touch the ground the light flashes and same with the -'s of the speaker wires and the constant and and ign wire and i have the wires not touching the chassis anymore. Did i short my deck?

 

[RonJ]

Start by entering you car information into the Garage feature located at the top.

 

[Brando312]

Good possibility you did if thats happening. Have you looked in your head unit manual about what exactly the "protect" mode is?

 

[EJ1 Coupe]

Protect mode is when the speaker terminals are touching chassis or speaker wire. and i have all the speakers unplugged and there is no power to my deck. So i'm pretty sure i shorted my deck... its pretty new but i dont think shorting the deck is under warranty lol

 

[RonJ]

And when i touch the ground the light flashes and same with the -'s of the speaker wires and the constant and and ign wire and i have the wires not touching the chassis anymore.

It's unclear to me what you are saying here^.

Aftermarket stereo, right? If so, which one?

And again, enter your car information into the Garage feature. It's difficult to give any specific help if we have no idea what car (or stereo unit) you have.

 

[EJ1 Coupe]

Yes its aftermarket cheap but better then the aftermarket one i had before

Deck is a JVC KD-R310

93 civic ex coupe.

 

[RonJ]

To work, the stereo needs voltage on both the Wht/Blu and Yel/Red wires. The latter should only be hot with the key in ON(II). Have you checked this?

Have you checked whether the Blk ground wire has continuity to body ground?

Does the unit have an internal fuse? Did you reset the unit?

Again, clarify what this means:

And when i touch the ground the light flashes and same with the -'s of the speaker wires and the constant and and ign wire and i have the wires not touching the chassis anymore.

Assuming that you will make additional tech threads in the future, please enter your car info into the Garage feature.

 

[EJ1 Coupe]

I just went and retested the wires put the ign(II) and constant has power ign has power and thats it the others don't so a bad ground wire? i don't have a multimeter with me today..

 

[RonJ]

Have you tried resetting the unit?

 

[EJ1 Coupe]

Yea i have tried. The Hu seems like it has no power at all. but the constant and ign leads are completely fine all the way to the Hu. should i just run a ground straight from the negative terminal i already have the constant power just for my deck.

 

[RonJ]

should i just run a ground straight from the negative terminal

Yes, run a new black ground wire from the unit to the metal frame under the dash to see whether it now works.

Did you check the fuse plugged into the rear of the unit?

Please enter your car info into the Garage feature. Click the Garage button at the top.

.

 

[EJ1 Coupe]

Yea the fuse is fine and i'll go try the ground right now.

 

[RonJ]

Yea the fuse is fine and i'll go try the ground right now.

Be aware that blown fuses don't always look blown, so testing it would be a good idea.

 

[EJ1 Coupe]

Thanks for your helpi had a bad ground. problem solved!