2006 Toyota 4Runner - 170-180mA Battery Draw

Group using the TO1 and TO2 firmware * see specific firmware for full feature list.
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loarmistead
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2006 Toyota 4Runner - 170-180mA Battery Draw

Post by loarmistead » Sun Apr 08, 2018 4:57 pm

I have been battling this issue for several months. I have the Maestro RR paired with a Kenwood DMX7704S.

I noticed my battery would be low after the vehicle sat for a few days, and would need to be jumped off. I briefly touched on the topic in a prior thread covering a different issue (which was resolved).
viewtopic.php?f=404&t=16815

After some troubleshooting I narrowed down that the 170-180mA draw to the antenna amp continuing to be powered after the truck was turned off. This issue did not exist prior to installing the Maestro RR.

With some guidance from the thread posted above, I ended up cutting both of the blue wires on the green plug. The first wire (wire 1?) did not resolve the issue, but cutting the other blue wire stopped the 170-180mA draw, while also killing the power to my antenna amp, which resulted in the inability to tune into any FM radio stations.

I kept that wire cut for the past several months and lived with the problem until I had more time to tear back into it in the Spring. Today I disconnected all of the Maestro harnesses and pulled them from the truck, flashed the unit with the latest firmware that was released March 2018, and checked and double checked all wiring with the Kenwood and Maestro user manuals, and reconnected the two blue wires that I had previously cut. Everything is wired correctly.

After plugging everything back in to the truck, I once again have a working antenna amp now that the blue wires are reconnected, however, when turned off, the truck once again suffers from the 170-180mA draw.

Any insight on this? Is there a fix or do I just need to leave the two blue wires cut and live without FM radio?

Note to add: No JBL, if that matters.

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Dara DeGrand
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Re: 2006 Toyota 4Runner - 170-180mA Battery Draw

Post by Dara DeGrand » Mon Apr 09, 2018 10:23 am

You can power the OEM amplified antenna with a different wire (the blue/white) and leave the blue wires cut.
Dara DeGrand
Maestro Technical Support Manager
Automotive Data Solutions Inc.
8400 Bougainville, QC
T 514.807.2888
TF 866.427.2999

loarmistead
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Re: 2006 Toyota 4Runner - 170-180mA Battery Draw

Post by loarmistead » Mon Apr 09, 2018 10:52 am

I'm having to imagine this in my head as I do not have the vehicle at the moment, but could I accomplish this by wiring the blue/white wire in with the red accessory wire?

So to confirm, wire blue/white into the red accessory wire, and keep the two blue wires on the green plug cut?

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Dara DeGrand
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Re: 2006 Toyota 4Runner - 170-180mA Battery Draw

Post by Dara DeGrand » Mon Apr 09, 2018 11:25 am

No- don't hook anything to the accessory wire. There is a solid blue wire that runs to the vehicle in the TO1 harness- that wire is your power antenna. Hook the blue/white up to it so that it's getting power directly from the radio. Leave the other two blue wires cut.
Dara DeGrand
Maestro Technical Support Manager
Automotive Data Solutions Inc.
8400 Bougainville, QC
T 514.807.2888
TF 866.427.2999

loarmistead
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Joined: Sun Jul 30, 2017 1:15 pm

Re: 2006 Toyota 4Runner - 170-180mA Battery Draw

Post by loarmistead » Sat Apr 14, 2018 12:28 pm

Thanks for the help - Disconnected both blue wires from the green plug and connected the solid blue from the head unit to the blue-white on the TO1 harness.

At least in the driveway FM and HD stations appear to be coming in, and the excessive parasitic draw is gone, now down to a healthy 45 mA.

I'll know for sure if the issue is resolved once I start driving around to see if the FM/HD stations drop out like they do when the antenna amp isn't receiving power.

loarmistead
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Joined: Sun Jul 30, 2017 1:15 pm

Re: 2006 Toyota 4Runner - 170-180mA Battery Draw

Post by loarmistead » Sat Apr 14, 2018 4:01 pm

Unfortunately with the current setup it looks like the amp is still not receiving power. I will test factory amp wire to see if it is getting juice at all and report back.

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