[mikk]

Hello all- I have a 2015 w/a new battery that will shut off when dash electrical (wipers/headlights/ac) are turned on.
Door locks and windows operate properly.
It will trigger ABS while driving as well.
It will toss an 0793. Upon clearing- it will show 0717. After clearing- 0793 will reappear. It will repeat cycle.
I have inspected the 4 ground points that I am aware of.
Any thoughts would be most appreciated. Thanks.

 

[SVTfocusO3]

Might help

 

[mikk]

Thanks for the reply. When they moved to the 6 speed transmission- they moved that internally.
I am of the opinion it is electrical, as it runs and drives fine- until electrical is called for.

 

[retiredat444]

are any aftermarket items installed?

 

[mikk]

No, stock everything.
It seems like a short/draw somewhere, preventing sensors from receiving signal.
I am going to TIS and do some downloading.
I am open to all suggestions and advice.

 

[steve108]

Double check all the connections to the battery are secure?

 

[mikk]

Everything is clean and secure AFAICT. It seems to have settled on P0717 today.
It still shuts off when headlights are turned on. Wiring harness ground perhaps?
I am going to TIS it up today.
Thanks to everyone for their thoughts and input so far. I really appreciate it.

 

[new echo owner]

Are you the orignal owner? If not, have long have you own it? Any accident?
Sounds like you either have a ground connection problem, or power feed to some of the circuit is compromised.

 

[mikk]

Used. A little over a year of ownership. Carfax report minor fender bender LF.
March repair was for door actuator and issue w/ABS activating when AC is turned on- 2 week fix.
April repair was follow up to ABS issue- 4 week fix.
May/June- dealer will not return calls or emails.

 

[new echo owner]

Do you live in an area that uses salt or chemical on the road during the winter monhts?
Will you be tackling this repair yourself or are you going to take it into a shop?
Depending on what was termed as 'minor', that may have something to do with your issues, because the battery, and one of the main fuse block is on that corner of the vehicle in the engine compartment.
If you plan to tackle this repair yourself, you will need a factory wiring diagram. It will provide you with information on what is common amount the circuits/systems you are having trouble with.

 

[cj1]

"I have inspected the 4 ground points that I am aware of."
Use your voltmeter to check for voltage drop on ground circuits.
From negative battery to ground terminal should be no more than few tenths of volt.
Do testing when you have an electrical load.

Verify that voltage across battery is correct with engine at idle and full electrical load.

 

[mikk]

I re-read "cleaned ground on LF apron"- I discovered one was "cleaned" by cutting wire and taping the end and hiding it. The other is just a now empty terminal.
If anyone can point me to where they might tie in to- I am still downloading and coming to terms w/TIS.
Thanks everyone.

 

[mikk]

 

[mikk]

I still have not found where the 2 ground wires go.
If anyone can help with what/where they are supposed to go- I would be very appreciative.
The 2 terminal ground wires on LF fender apron left of fuse box?

 

[cj1]

Sorry don't have locations. The Toyota shop manual or alldata.com should be of some help.
Let us know how it goes.

 

[new echo owner]

Take some pictures with bigger coverage for better reference where the ground is located, can’t tell from the closeups you have!

 

[mikk]

 

[mikk]

Upon closer look- there are a total of 3 terminal lugs.
I am going to look into fuse box wiring today. All info is most welcome.
Thanks for the replies everyone.

 

[mikk]

 

[new echo owner]

Looks like that taped up ground wire is one that belongs to that grounding point, the broken terminal is visible there.
Probably just need to put an eyelid terminal back on the wire and bolt it back down at the grounding point.