OK to drive with BMS_f038 code?

[alflash]

...
https://asavage.dyndns.org/Toyota/RAV4/EV/Owners_Rigs/Al's_2014_Blue/Contactor_Repair_202408/20241201.mp4 (20Mb)...

1. Charger data block data in Time? For example, like in

and/or in

2. Why in this your video Pilot Current = 0A, Contactor State is Open?
3. Can you now check the actual data of this pilot signal? as show e.g. video about oscillograms of the (charge) pilot signal of RAV4EV
Charger state and sub-state during the steps of self-attempt/checking the charge?

Does your charger do those pre-check stages/steps (that show in viseo)?

 

[asavage]

The EVSE is provisioned/configured to provide 40A, and has been in service for months, charging a 32A OBC in a '19 Bolt, without issue. I do not suspect a faulty CP from the EVSE.

In my video, the Charger State never leaves Standby.

The contactors do not close for charging. They do not close when not charging (nozzle not inserted to charge port), attempting to drive.

 

[alflash]

The EVSE is provisioned/configured to provide 40A, and has been in service for months, charging a 32A OBC in a '19 Bolt, without issue. I do not suspect a faulty CP from the EVSE.

In my video, the Charger State never leaves Standby.

You write that yours "EVSE is provisioned/configured to provide 40A, and has been in service for months, charging a 32A OBC in a '19 Bolt".
Ok! But I was asking about the actual pilot signal data currently/now and on this RAV4EV*.
The reason for this question is that the charger "sees" that an EVSE is inserted into the charging port, but it does not show the set current consumption from the AC network.
Is your Bolt currently/now charging from this charger?
I apologize in advance if my question seems stupid and/or inappropriate to you.

The contactors do not close for charging. They do not close when not charging (nozzle not inserted to charge port), attempting to drive.

Is there a "Check EV System..." message now and is there a DTC P312f in Toyota now?
A trivial question: is the "Contactor" fuse good?

*

 

[Boris_P]

Я подключил аккумулятор, контакторы не замыкаются. У ТПД нет ошибок, и зарядка не происходит. Я случайно проверил Сервис Отключение. Посмотрите 10-секундное видео TPD ниже, контакты разомкнуты, отображается напряжение аккумулятора. Сигнал Pilot Current (подключенный к EVSE, настроенному на 40 А) переключается с 0 на 40 А при включении заряда.

https://asavage.dyndns.org/Toyota/RAV4/EV/Owners_Rigs/Al's_2014_Blue/Contactor_Repair_202408/20241201.mp4 (20 Мб)

Я снял блок с машины, снял крышку пентхауса, ничего необычного не обнаружил. Я отсоединил разъем контакторов от платы BMS и подал ~12 В на каждый контактор через регулируемый/ограниченный по току источника питания, и оба контактора работают (звучат правильно). Затем я проверил устойчивость высокого напряжения через контакторы: ОК.
Тестовые точки принимаются:

• отового токового шунта к клемме высокого напряжения внизу для контактора со стороны водителя
• от сервисного разъединительного контакта к клемме высокого напряжения на контакторе со стороны пассажира.

Напряжение и ток, необходимые для работы сменных контактов, аналогичны испытанию одного из снятых контактов.

Я планирую снова подключить пакет к автомобилю и использовать SMT, чтобы получить больше информации, так как TPD не дает многого. Здесь ниже нуля, все покрыто льдом. Посылка сейчас находится в доме, но автомобиль снаружи. На этой неделе я отправляюсь в свой ежегодный отпуск в солнечном климате, но поработаю над этим больше, когда приеду, если позволит погода.

Hello. Please tell me how the problems arose that the contacts did not close? Have you found the reason? I have exactly the same situation, I still can’t understand what happened, the car came in for repair under its own power, everything worked, I changed the contactors, and that’s it, they didn’t turn on , this is the first time this has happened to me. Thank you

 

[asavage]

Mostly due to local weather, I have not touched this car in three months, so I have no new progress to report.

 

[Boris_P]

Mostly due to local weather, I have not touched this car in three months, so I have not new progress to report.

the situation is really very strange and almost a dead end, at this point in time I have run out of all assumptions about what could happen, I have rechecked everything many times, everything is fine, but BMS does not want to turn on the contactors, I did not change anything in the car except contactors, and I could not damage anything either, I have a lot of experience I know RAV4EV well and repaired almost everything in them , and there were very difficult repairs , but the simplest task and I'm at a dead end , some kind of mysticism . Today I want to connect SMT , maybe SMT will clarify something , TPD does not see any problems , there are no errors regarding Toyota Techstream either , everything is fine, everything is fine, there are no errors BMS_f023 either, and the contactors do not work.

 

[Boris_P]

alflash, Vladimir Petrovich, hello!do you have the most extensive experience in repairing RAV4 EVs, have you ever had similar situations as mine and the problem described above with asavage? you can Is there anything you can do to help with this task? I can tell you the whole chronology in detail, I can provide you with any diagnostic data. or I can give remote access to TPD from my computer, I use the old version, I always work with it and there were no problems before. I will answer any of your questions. this is a really interesting repair situation, as I see savage has a similar problem Thank you in advance

 

[Boris_P]

bms data, all OK

 

[Boris_P]

problem solved

 

[Boris_P]

Mostly due to local weather, I have not touched this car in three months, so I have no new progress to report.

the problem is that the high-voltage circuit breaker is not fastened correctly, it can be fastened in two positions, both are fixed, but it will only work in one correct position!! install it correctly and your Ravik will go too

 

[asavage]

The orange Service Disconnect under the passenger seat, that plugs in here?




Or the HV fuse at the forward junction box (front end of battery case)?

 

[Boris_P]

Unfortunately, I don’t speak English, the video is in Russian, but I think the meaning will be clear to you

 

[Boris_P]

Оранжевый сервисный выключатель под пассажирским сиденьем, который здесь сидит?

уes

 

[asavage]

YT's auto-translate worked OK, so I followed along. Thank you for sharing this discovery! I, too, have had the Service Disconnect out many, many times on several vehicles, and I even double-checked it on this project, because it has been mentioned before that errors can be attributed to the Service Disconnect not being fully installed, but your video illustrates exactly how to duplicate the problem.

I've marked-up a couple of stills from your video to post here so I can refer to them easily later.

 

[alflash]

Take a look at the illustration of this malfunction, which is one of the possible causes of the BMS_f062 code

Screen from video