What did you do about the connector on the LS600h inverter? Did you source a mating connector for it or fit your own?


I brought a used Lexus LS600h engine/transmission wire harness. I was lucky, the seller cut off all necessary connectors from the other harness (inverter, oil pump controller ...

Connectors are TE .025 series style. Sometimes from different suppliers, e.g. Misumi, Yazaki, Sumitomo, Tokai Rika, ...
These have different crimp terminals, but all fit together. It doesn't matter who the manufacture is.

TE .025 40-pin is: 1318389-1
TE .025 crimp terminals (contact lance): 1123343 ...

Data stream is different for the RAV4h because it has 3 inverters, one additional for the rear axle motor and a built-in 12V DC/DC converter.

HTM data bytes: 105
MTH data bytes: 140

But I have access to a LS600h from a Toyota dealer if necessary.

We still not know how to control the buck/boost ...

HSD-Analyzer for monitoring and simulating the HVC-Bus. Uses an ATxmega128A1U with 4MB SDRAM attached and USB serial port connection for capturing/transmitting/receiving data. Can act as Sniffer for both HTM and MTH, as master (HVC-ECU) and as slave (INVERTER):

HSD-Analyzer_1.jpg
HSD-Analyzer_2 ...

Yes it can be run with lower voltage. The inverter seems not to care about the HV bus voltage. No electronic modifications on the inverter side necessary. Just applying the HV DC voltage to the bus bars directly, bypassing the internal boost/buck converter which is limited to 37kW output power.

Attention:
uC output levels are inverted for the CAN transceivers, like for any UART output

high level --> 0, idle
low level --> 1

REQ triggers:
transistion from high level to low level --> trigger MTH transmission (uC RX)
transistion from low level to High level --> trigger HTM transmission (uC ...

synchronous full duplex USART communication
one start bit - 8 data bits, LSB first - one stop bit

checksum = byte80*256 + byte79 (most significant byte: 80, should be little endian)
checksum calculation = byte1+byte2+...+byte77+byte78

Use a 5V CAN transceivers (like in your schematic of the ...

Hi @all,
that's great that someone else is working on the GS450h/LS600h system. With Bigmouse his help we got the transmission / inverter running with our own control module.
It's not SPI, it's a synchronous serial communication. You have to use a micro-controller with USART for that. So the Teensy ...