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Use an oscilloscope to check the RMI signal (of D15) without connecting it to the heater, but with a 10kOhm fixed resistor connected between its pin (#3) and the PWR pin (#2). Compare the signal with and without this resistor and maybe that (step 1) will be enough. Your replacement connector...

I wonder if the cabin heater parameters are among these data. https://alflash.com.ua/2019/to_rav4ev/hvac_d1.png

No As I assume, the collector of the output transistor of NE555 (pin#3) on the board is connected to both the device output and the load resistor. I suggest checking (use oscilloscope) the voltage on the D15 wiring connector on pin #3 RMI when a "load" resistor from the +12V pin #2 is...

Thanks for info! I wonder if the heating came on when the pump was not working and if there were any fault code(s) in the HVAC system?

Unfortunately, I don't have the input stage circuit of the RMI signal receiver. I don't exclude (with a small probability) such a circuit, when the load resistor of this circuit is located on the heating element control board (attach.1). To check this version/assumption, the photo above shows...

The fact that the heating elements of this heater are not PTC type is not a limitation for their testing without cooling the radiator with a circulating flow of liquid. My experiments with them (video in...

The sounds are a bit strange, especially the amplitude modulation with a frequency of several hertz. But it seems that the pump is working. Is there liquid in the system? The oscillograms are not clear to me. Especially because of their incomprehensible amplitude and the difference in the...

In you can hear the sounds under the hood when all three cooling pumps are forced to turn on. The cabin heater pump is of the same design. ???

1. TRD does not and cannot have data on the cabin heater pump, since it is part of the Toyota HVAC system*. The signals of the cabin heating pump are on pins #13 and #14 of the A56 connector (of Toyota Power management Control ECU). 2. Off. To determine the location of the source of extraneous...

Thanks :) 1. https://alflash.com.ua/2019/to_rav4ev/pmc.png https://alflash.com.ua/2019/to_rav4ev/pmc1.jpg HVAC Part Location https://alflash.com.ua/2019/to_rav4ev/hvac_loc.png 2. Record (under hood) and "show" the noise you are talking about. A completely reliable, but not the easiest way...

Off-topic. Today is the 7th anniversary of my diagnostics of the first RAV4EV :)

Excellent! 1. The heater itself is in good working order. Such a relatively simple check could eliminate the work of removing, disassembling and checking the "insides" of the heater :) 2. Depending on the required heating level, different groups of heaters are switched on. And, judging by the...

Depending on the list of purposes and goals of creating a video, I use different sets of video editors.For example, Movavi, Clipchamp, Camtasia and several more AI editors and AI generators "text in photo" and "text in video". As example, this quick and small attach.3. ;) I do not consider the...

Video about this yours checking (...//youtu.be/up744uu-lcs) Thanks for photos and video! p.s. Extraneous sound at the end of the video against the background of the Proximity sound, appears with the same repetition frequency ... :(

Wow! Classic example (attach.1) two-channel incremental waveform encoder*. Good result, thanks! *https://www.haydonkerkpittman.com/learningzone/whitepapers/incremental-encoder-signals As I understand osc. data during this shot, the rotor speed was approximately 112 rpm...

Do you mean Toyota warranty on RAV4EV HV battery over 10 years? For reference: HV Battery warranties for current BEVs https://www.toyota.com/electrified-vehicles/warranty/

Take a look recuperation HV Battery charge current in B mode when braking (1:02)

Take a look https://www.myrav4ev.com/threads/2013-toyota-ev-error-code-bms-f063.2663/#post-31379

There should be supply voltage on pin #4, but the oscilloscope only shows interference. Sir, the sensor CAN'T work without power.

Sorry, but that photo shows the connection to pins #1, #2 and #4 (to the red, green and white wires).