Tesla Model 3 alerts codes

SDCR_a004 / SDCR_a004_pmRunningFdbkIrrational

Alert Description
Drive inverter (DI) running-feedback (fdbk) pin to secondary disconnect controller (SDC) is in an irrational state.

Potential Impact
SDC will not skip pyro self-test (PST) if DI is MIA at startup. Potential overlapping pyro self-tests.

Set condition
DI UART data is active, but running-feedback pin state is low.

Clear condition
DI running-feedback pin is set, or universal asynchronous receiver-transmitter (UART) communication stops.

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