Telematics Control Unit (TCU): Difference between revisions

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Add findings about 4G TCU
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* 28275 6FL0B
* 28275 6FL0B


These are found on some 2nd-generation Nissan Leafs. The one pictured below (p/n 28275 5SA0B) includes a Sierra Wireless AirPrime AR7554 modem module, a chip labelled R7F7010259 (possibly part of the Renesas RH850/F1L family) and a small PIC16LF1518 chip.
These are found on some 2nd-generation Nissan Leafs. The one pictured below (p/n 28275 5SA0B) includes a Sierra Wireless AirPrime AR7554 modem module, a chip labelled R7F7010259 (possibly part of the Renesas RH850/F1L family), a small PIC16LF1518 chip, an A1051/3 CAN transceiver chip, an A1043 CAN interface chip (this list is not exhaustive). An examination and probe of the board while powered on did not reveal any obvious UART terminals, however it does emit CAN data while powered on on a bench.


It does not contain a physical SIM slot.
It does not contain a physical SIM slot.
The unit photographed below is not detected as a USB device when connected to a computer. It may be faulty, or in some kind of disabled mode, or a non-standard USB protocol, I am not sure.


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