Weird RAV4 EV warning light issue
Автор: Michael Waddle
Загружено: 2024-03-11
Просмотров: 896
Описание:
2013 Toyota RAV4 EV.
There is a check EV system warning on the dash. The Toyota computer has a P312F code. There are no alerts stored in the Tesla gateway. The code in the Toyota computer will not clear.
If the HV battery is unplugged or the BMS fuse is pulled the code can be cleared.
The charger, DCDC and thermal ecu were unplugged and the code remains.
The drive unit was unplugged and the CAN lines were jumped, code still remains.
Power, ground and CAN lines were checked at the battery, powertrain control module and Tesla gateway. All are good.
It appears to have a problem with the HV battery.
A working battery from a parts vehicle was plugged in and the code came back right away.
A spare gateway ecu and powertrain control ecu were swapped and the code still remains.
All of the modules are up to date and the Tesla powertrain firmware upload was performed.
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