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2011 Tundra Has Radio Acc, But No Constant at Harness


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erkme73 
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Posted: December 12, 2018 at 5:19 PM / IP Logged Link to Post Post Reply Quote erkme73
I connected a camera system to the radio's acc and constant lines, and it worked for a while.   I assume the load was too high, or I shorted something as I put everything back together.   But now the radio is dead, but I have acc power - just not constant.
I've checked all fuses under the steering column and by the battery under the hood. Nothing blown. Are there fuses elsewhere between the constant 12V (greenish/blue) and the battery?
i am an idiot 
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Posted: December 12, 2018 at 7:18 PM / IP Logged Link to Post Post Reply Quote i am an idiot
There is a blown fuse somewhere.
erkme73 
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Location: Florida, United States
Posted: December 12, 2018 at 7:27 PM / IP Logged Link to Post Post Reply Quote erkme73
I think that's a pretty safe assumption. I've also noticed that it's throwing some codes with the VSC light blinking. This happened before when I blew a fuse towing a friend's trailer. But that was a quick fix. I have now gone over every single fuse manually in both fuse box and they're all okay. I am absolutely stumped. I'll give this a little bit more time before I spend the Box on the techstream website.
i am an idiot 
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Posted: December 12, 2018 at 7:32 PM / IP Logged Link to Post Post Reply Quote i am an idiot
erkme73 
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Posted: December 12, 2018 at 7:48 PM / IP Logged Link to Post Post Reply Quote erkme73
Well, I've got egg on my face. I don't know how. I checked, rechecked, and then triple-checked all of them, including that stubby row with 21 in it. They all toned out.   I just went to check for voltage across the pins to see if there is any parasitic load with the engine off, and I got a full 12v.   That, of course, means the fuse it blown. Sure enough it was.   I disconnected the load of the camera system and replaced the fuse. Stereo came back up.   I feel like a complete 1D10T...
Thank you for nudging me to do it one more time - this time, with my eyes open, ears listening, and brain paying attention.
erkme73 
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Joined: December 30, 2007
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Posted: December 12, 2018 at 8:08 PM / IP Logged Link to Post Post Reply Quote erkme73
I am curious, BTW, how did you know to look at 21? All of the diagrams I've found online show 19 through 22 as blanked out.   There's a fuse shown in the block, but the legend shows dashes...
i am an idiot 
Platinum - Posts: 13,666
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Posted: December 12, 2018 at 8:40 PM / IP Logged Link to Post Post Reply Quote i am an idiot
Found a post in a forum that had that picture and a list of the fuses and what components they were associated with. It said Radio 1.
i am an idiot 
Platinum - Posts: 13,666
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Posted: December 12, 2018 at 8:44 PM / IP Logged Link to Post Post Reply Quote i am an idiot
You need to check the wiring to the camera. It is the problem. The camera pulls no current at all. It did not blow the fuse.
erkme73 
Member - Posts: 16
Member spacespace
Joined: December 30, 2007
Location: Florida, United States
Posted: December 12, 2018 at 8:52 PM / IP Logged Link to Post Post Reply Quote erkme73
no, the camera is actually four cameras and a processor that provide surround bird's eye view. And you're right even that shouldn't pull more than a half an amp. I'm pretty sure in the haste to get everything buttoned up before dark I didn't tie back the wires under the passenger seat. The last thing I did before the radio went dark was slid the seat backward. I'm pretty sure that probably cut/pinched or ground out the cable. I'll get it squared away tomorrow with some more daylight. Thanks again for your help.

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