More PB voltage weirdness.

[HammaMan]

Running tests on the 'easy' battery solution I'm working on -- it's the first time I had a meter on / visible directly connected while getting into and out of the drivers seat. Ford's logic is so strange. Engine on - in driver seat w/ door closed, voltage charging. Door open, in seat, consume 12v. Any other condition than sitting in driver seat w/ door closed, consume voltage. Sit in driver seat w/ door closed, charge voltage. I put the truck back to stock battery config to test this simply swapping over the negative lead to the test LFP unit. Here's an example. @Snakebitten does your little app show you live voltage? Give this a try.

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[Snakebitten]

I can view live voltage.
I'll check and report back

 

[Snakebitten]

Good catch HammaMan!

Launched Bluetooth Battery Monitor before approaching/waking truck

Approach trigger/wake-up:
(bigger shock to system than some might think)

Sitting in pilot chair. Door closed. Ignition in "Ready Mode"
(Hybrid SOC left high, so no ICE)

ONLY change is driver's door opened, but still sitting in the seat. About 4-5 seconds delay but what you witnessed happened. But I don't think it's a seat sensor driven charge rate change, but rather door open sensor.

Exited seat

Sat back in seat, and closed door.
Again, Amazing catch.

Ignition off, but I believe DC/DC converter still running along with Sync4/HVAC/IPC

Open door, which shuts off Sync4/HVAC/IPC and of course DC/DC converter.

Left approach zone, but external zone lighting and interior lights on

Truck goes dark:

Just now, after about 30 minutes static recovery

The whole event in yellow circle.
(truck sat all day. You can see one incidental hit earlier in the day when I walked too close to the truck with Fob in pocket)

 

[HammaMan]

Good catch HammaMan!

Launched Bluetooth Battery Monitor before approaching

The logic of these trucks just doesn't make any sense at all.

 

[Snakebitten]

But you said it's logic? ??

Yea, I would love to know if the charge rate decrease with an opened door is a side affect of some other opened door code/trigger. Like an unintended consequences of something else that was intended?

 

[HammaMan]

But you said it's logic? ??

Yea, I would love to know if the charge rate decrease with an opened door is a side affect of some other opened door code/trigger. Like an unintended consequences of something else that was intended?

It's either seat or key related as you get out of truck (still "on") and the voltage doesn't come back. Sit in seat and it's on (key in pocket). Truck doesn't have driver seat sense so it's got to be key. It doesn't make any sense as that'd be a specific line of code to detect key near its sensor in the console, and then adj voltage. Ford logic programmers are nuts.

There's still also the question of why the throttle application applies voltage. Hrm, lemme check something. Ah ha, found that if you push throttle slightly w/ door open voltage comes back! That's as I found before but I hadn't seen this other logic @Snakebitten w/ the key in door closed. So if going to jump vehicle, either key in door closed (need to verify that it's the key) or door open and baby throttle application to bring the voltage back up.

 

[Oxford_Powerboost]

But you said it's logic? ??

Yea, I would love to know if the charge rate decrease with an opened door is a side affect of some other opened door code/trigger. Like an unintended consequences of something else that was intended?

Not that I know why - but i noted that ignition on but without brake so no “ready” (accessory mode), you get a float voltage from the DC/DC converter. I also know that opening the door while on in “ready” mode removes the “ready” light after a few seconds. The voltage change seems likely to be an unintended consequence of the “unreadying” program it has…

 

[Snakebitten]

Not that I know why - but i noted that ignition on but without brake so no “ready” (accessory mode), you get a float voltage from the DC/DC converter. I also know that opening the door while on in “ready” mode removes the “ready” light after a few seconds. The voltage change seems likely to be an unintended consequence of the “unreadying” program it has…

Interesting.
I'll check again tomorrow and verify the voltage drop and Ready indicator are exactly synced in time.

And I'll also open door with key in pocket when I get out of the seat, VS leave key on the console.

The drop in voltage when the door opened was obvious and significant. The additional drop when I got out of the seat (or actually the fob was outside at a different range) was much less, and I wasn't sure it was related. Moving the fob in/out of the interior will confirm whether it to is a trigger.

CrAzY stuff.
Amazing trucks

 

[HammaMan]

Okay, the "ready" light's status and the voltage move at the same time. If keys are in truck and driver door is closed (regardless of occupant) with ignition "on", ready is on, voltage is up. Any other door being open is moot to this fact.

The voltage is also raised by depressing throttle just a hair, ready light not present. Odd programming.

 

[scott011422]

Not that I know why - but i noted that ignition on but without brake so no “ready” (accessory mode), you get a float voltage from the DC/DC converter. I also know that opening the door while on in “ready” mode removes the “ready” light after a few seconds. The voltage change seems likely to be an unintended consequence of the “unreadying” program it has…

This also happens when using remote start. 12.83 is about all it gives.

 

[fwunder]

I would be curious if you note same behavior when in generator mode. ICE events may be be spread out if 12 volt systems weren't so hungry with no AC load?

 

[fwunder]

Answering my own question. Yes, indeed strange behavior.

Generator mode, door closed:

Generator mode, door open:

Generator mode, door closed:

 

[Overboost]

Seems like typical behavior when approaching for the CAN bus to wake up and start initializing modules. I'd agree the key sensing is the trigger, not seat sensing.

 

[fwunder]

Seems like typical behavior when approaching for the CAN bus to wake up and start initializing modules. I'd agree the key sensing is the trigger, not seat sensing.

In my generator mode on test, I left key fob in vehicle. The only difference was door open or closed.

 

[Snakebitten]

In my generator mode on test, I left key fob in vehicle. The only difference was door open or closed.

I am guessing, but Generator mode is only available in Key-on/Engine-on, which always seems weird to say on a Powerboost.
The point being, the truck is ordinarily in "Ready" mode when in Generator mode.
So when you opened the door, the Ready light went out just as it does when not in generator mode?

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