Sienna 2012 Rear Camera Voltage

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dcarter5
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Sienna 2012 Rear Camera Voltage

Post by dcarter5 » Thu Sep 13, 2018 3:23 am

I have installed a Kenwood DDX 9704s using a T01 harness and everything appears to work except the OEM fit rear view camera. I have stalk controls, car battery voltage, tire pressure all working. When I measure the voltage of the power wires going to the camera I measure 4.5V. My understanding is the Rear view camera on my vehicle should be 6V.
Is 4.5V sufficient and is that expected. It appears that is is the maestro box that generates this voltage.

Thanks

Dan

JustinFerroni
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Re: Sienna 2012 Rear Camera Voltage

Post by JustinFerroni » Thu Sep 13, 2018 10:15 am

4.5v to 7v should in most toyotas is the operating voltage for the camera however on some toyotas they used a camera that requires a bit more amperage to power on. In these cases you will need to get a 12v to 6v step down converter.

https://www.amazon.com/12-Volt-6-Volt-C ... va+12-volt
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TheBum
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Re: Sienna 2012 Rear Camera Voltage

Post by TheBum » Sun Oct 14, 2018 7:45 pm

I'm glad I stumbled across this topic. I just installed a Pioneer AVH-W4400NEX and Maestro RR in my 2012 Highlander and ran out of daylight before I could diagnose why the rear view camera wasn't working. I guess I'll go back to the 12V-to-6V converter I was using in a previous installation. I'll likely reuse the T01 camera cable because it has a much less delicate signal connection than my previous setup.

TheBum
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Re: Sienna 2012 Rear Camera Voltage

Post by TheBum » Tue Oct 16, 2018 5:48 pm

Can anyone at iDataLink tell me the manufacturer and part number for the plug in the T01 harness that provides 6V power to the camera cable? I'd like to be able to test a voltage converter without splicing into wires. If it works, I'd leave it that way. Thanks.

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Dara DeGrand
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Re: Sienna 2012 Rear Camera Voltage

Post by Dara DeGrand » Wed Oct 17, 2018 2:13 pm

There is not a way to order that harness by itself. Before you go that route, I would suggest metering the blue/yellow wire off the Maestro and see what kind of voltage it gives you. If it's 4-6v, then the voltage is not the problem.
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TheBum
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Re: Sienna 2012 Rear Camera Voltage

Post by TheBum » Mon Oct 22, 2018 12:40 pm

Well, I feel stupid. I was using a voltmeter on the cable providing the 6V and when I pulled on the cable, the whole cable came out with nothing connected to the RCA plug. It apparently came loose sometime during the installation. I plugged it into the rear camera input on the head unit and, lo and behold, I got a picture.

I need to use some heat shrink tubing on that connection.

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