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Complete radio and display power loss. HELPPPPPPPPPPP!!!!!

Old 03-21-2014, 01:44 PM
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Complete radio and display power loss. HELPPPPPPPPPPP!!!!!

So I was messing with my pioneer double din when my amps weren't powering on correctly, and after I got all of it sorted out, right as I was tucking wires and sliding the head unit in, a sudden power loss of the radio and the display above. Checked all fuses possible and none are blown. I suspected wires coming disconnected but both power and ground wires are still intact. HELP!!!!
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Old 03-23-2014, 08:58 PM
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Have you taken the fuses out completely or just did a test bulb check on both posts?
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Old 03-23-2014, 10:23 PM
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Took all fuses out completely. I actually found out a blew the acc fuse, and upon putting a new fuse in the real problem occured. Now, I cannot plug in my climate control on the drivers side of it, it has the illumination wiring and such to it, and every time I plug that in, the dash had the both turn signals light at as if they both are blinking super fast and it just has a consistent ding that only stops after I unplug that plug. Also the information center display barely works, and it flickers the brightness as if you turn on and off your lights (The backlighting) and it doesn't display the climate control settings or anything half the time. And lastly, the climate control will not fuction beyond the fan speed. I fried something but I am not sure what. I have the metra double din kit and I found one of the two (weird) illumitation wires have the coating melting around the wire. So I know there is a bad connection somewhere but I cannot find it and I cannot find a wiring diagram for the metra kit. I need serious help. I going to really try to dig into it tomorrow. As in uninstall my radio and the kit, and reinstall it. See what happens.
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Old 05-26-2018, 03:41 PM
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This happaned to me too because I connected the terminals wrong so my guess is that my ecu got fried and doesnt want to start, on the numbers on the ecu are N3H6 18 881E but I want to know if I can put another compuer with a K instead of an E on since I cant find any E's in my area
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Old 05-28-2018, 01:57 AM
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Originally Posted by Renderless View Post
This happaned to me too because I connected the terminals wrong so my guess is that my ecu got fried and doesnt want to start, on the numbers on the ecu are N3H6 18 881E but I want to know if I can put another compuer with a K instead of an E on since I cant find any E's in my area
Have you checked for blown fuses and other stuff before deciding it needs a new ECU? ECU changes can be a pain in the neck. For one thing, you need Mazda to program the ignition cylinder and the new ECU to play nice together. The anti-theft immobilizer is in the ECU.

I *think* K will work, but no promises, Mazda's ECU nomenclature is pretty unclear and not enough people have had this problem to fully map it out.
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Old 05-29-2018, 02:42 PM
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Originally Posted by Loki View Post
Have you checked for blown fuses and other stuff before deciding it needs a new ECU? ECU changes can be a pain in the neck. For one thing, you need Mazda to program the ignition cylinder and the new ECU to play nice together. The anti-theft immobilizer is in the ECU.

I *think* K will work, but no promises, Mazda's ECU nomenclature is pretty unclear and not enough people have had this problem to fully map it out.
I'll put the old ecu back in and check fuses but I also did a engine change so a reprogroam might still be in order? I have a mazda dealership down the street so I'am lucky
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Old 05-29-2018, 03:42 PM
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Engine changes shouldn't need an ECU reprogram, except for the 20-pedal brake stomp to clear the sensor profiles.
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Old 05-29-2018, 04:48 PM
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Oh this is my first involved car fix up and first rotary car I've seen or messed with so I'am at the will of my mechanic but I want to be involved in it and if I keep it I want to do alot to keep it healthy after all these "problems" and get it running
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