battery voltage reads as 0.9V

Group using the TO1 and TO2 firmware * see specific firmware for full feature list.
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VitaminDJ
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Joined: Wed May 29, 2019 1:52 pm

battery voltage reads as 0.9V

Post by VitaminDJ » Wed May 29, 2019 2:01 pm

Install details:
  • 2012 Toyota Venza w/ JBL audio
    Pioneer AVH-W4400NEX Receiver
    iDatalink HRN-RR-TO1 Install Harness
    iDatalink Maestro ADS-MRR Universal Radio Replacement & SWI
When I go into the Maestro "Vehicle Features" page, the display indicates the battery voltage is just 0.9 volts. Measuring the voltage at the battery with a multimeter indicated 12.8 volts.

Any idea what's going on here? (sorry for the sideways pic)

Image

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Dara DeGrand
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Posts: 5830
Joined: Mon Dec 02, 2013 1:34 pm

Re: battery voltage reads as 0.9V

Post by Dara DeGrand » Wed May 29, 2019 3:29 pm

If you look at the battery voltage listed on the gauges screen, does it also show 0.9V?
Dara DeGrand
Maestro Technical Support Manager
Automotive Data Solutions Inc.
8400 Bougainville, QC
T 514.807.2888
TF 866.427.2999

VitaminDJ
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Posts: 7
Joined: Wed May 29, 2019 1:52 pm

Re: battery voltage reads as 0.9V

Post by VitaminDJ » Wed May 29, 2019 4:05 pm

Battery voltage is not a gauge shown on either of the two pages by default, but I see there's a way to customize the gauges shown.

Looking at that, however, battery voltage appears disabled and I cannot add it:

Image

VitaminDJ
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Posts: 7
Joined: Wed May 29, 2019 1:52 pm

Re: battery voltage reads as 0.9V

Post by VitaminDJ » Wed May 29, 2019 4:18 pm

I forgot to mention an important detail:
I'm using this OBD splitter so I can attach the Maestro cable and my insurance company's driving tracker to the ODB port: https://www.amazon.com/dp/B00U11NQW2/re ... 7CbMW4KHZY

I'm using the Maestro's ODB "on demand" setting as well.

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Dara DeGrand
ADS Team
Posts: 5830
Joined: Mon Dec 02, 2013 1:34 pm

Re: battery voltage reads as 0.9V

Post by Dara DeGrand » Wed May 29, 2019 4:49 pm

I suspect the OBD2 splitter/insurance tracker is causing your gauges to be disabled. Vehicles do not have the ability to send to more than one scantool at a time, and this will cause us to get kicked off of the data lines.

Can you remove the insurance scan tool for a bit to test? If so, remove it, reset the RR, and let's check your battery voltage gauge and vehicle info screen and see what it reads.

We're looking into this, but definitely need your help in getting to the bottom of it. In the meantime, one additional quick test: Unplug the RR's OBD2 connector from the vehicle and let's see if the voltage reading on the vehicle info screen gives you something different than 0.9V.
Dara DeGrand
Maestro Technical Support Manager
Automotive Data Solutions Inc.
8400 Bougainville, QC
T 514.807.2888
TF 866.427.2999

VitaminDJ
New User
Posts: 7
Joined: Wed May 29, 2019 1:52 pm

Re: battery voltage reads as 0.9V

Post by VitaminDJ » Wed May 29, 2019 5:11 pm

OK, I've done two checks:

1. Unplug RR's OBD2 connector from the vehicle
2. Remove splitter and insurance tracker, plug RR directly into vehicle OBD2 port

In both of this situations, the battery voltage displayed was still 0.9V!

VitaminDJ
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Posts: 7
Joined: Wed May 29, 2019 1:52 pm

Re: battery voltage reads as 0.9V

Post by VitaminDJ » Wed May 29, 2019 5:13 pm

Ah, reading your instructions it says to "reset the RR". How is that done?

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Dara DeGrand
ADS Team
Posts: 5830
Joined: Mon Dec 02, 2013 1:34 pm

Re: battery voltage reads as 0.9V

Post by Dara DeGrand » Wed May 29, 2019 5:17 pm

Setup > OEM Setup > Maestro Features > Maestro Module > Master Reset
Dara DeGrand
Maestro Technical Support Manager
Automotive Data Solutions Inc.
8400 Bougainville, QC
T 514.807.2888
TF 866.427.2999

VitaminDJ
New User
Posts: 7
Joined: Wed May 29, 2019 1:52 pm

Re: battery voltage reads as 0.9V

Post by VitaminDJ » Wed May 29, 2019 5:30 pm

OK, I plugged directly into ODB2 port, removing both the insurance tracker and the splitter.

I did the "master reset" as instructed. Battery voltage still displays "0.9V", however.

I took a snap of this page, thinking you might need it:
Image

VitaminDJ
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Posts: 7
Joined: Wed May 29, 2019 1:52 pm

Re: battery voltage reads as 0.9V

Post by VitaminDJ » Wed May 29, 2019 8:46 pm

Latest update: after driving the car with the ODB cable plugged directly into the vehicle's port, the voltage does display correctly!

Interestingly, when switching to the Maestro screen with the voltage indicator, it displays "0.9V" for a split-second, then displays the actual voltage reading (which was something like 13.3 when driving).

For now, I'm going to keep it set up like this, but if there was a way to use a ODB splitter cable that would be great.

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