Alerts

Ambient temperature (refer to pcbTemp) exceeds upper temperature threshold

No direct impact. Could damage drive inverter if temperature is continuously too high.

The DIx Phase B current sensor is irrational. An irrational current may indicate a high rate of change or current measurement out of sensing bounds. There may be a condition affecting current input and output.

If the alert asserts at the beginning of a drive cycle, DIx may not enable. If the alert asserts during a drive cycle, DIx may be disabled. DIx may not function as expected.

Measured latched fault response does NOT match with expected request from DI

In the event of a sudden LV loss at speed, latched fault response may not match expectations, exposing drive unit to unexpected torque

Abnormal temperature measurements from stator sensor 1

Stator sensor 2 will be used instead (if available)

Abnormal temperature measurements from DI coolant outlet sensor

Unable to monitor DI coolant outlet sensor temperature

The DIx ECU has detected an error with ADD.

Gear train and drive line thuds and noise typically dampened by ADD may be more noticeable.

The DIx ECU has detected the current sensor RMS current has exceeded the expected RMS threshold on Phase C.

DIx may not function as expected, including vehicle power being limited.

The DIx ECU has detected the current sensor RMS current has exceeded the expected RMS threshold on Phase B.

DIx may not function as expected, including vehicle power being limited.

The DIx ECU has detected the current sensor RMS current has exceeded the expected RMS threshold on Phase A.

DIx may not function as expected, including vehicle power being limited.

The DIx ECU has detected a peak in Phase C.

DIx may be inoperable.

The DIx ECU has detected a peak in Phase B.

DIx may be inoperable.

The DIx ECU has detected a peak in Phase A.

DIx may be inoperable.

The Switch Off Path Test (SOPT) for Drive Unit has failed. The DIx and PM torque measurements are different. The pathway between DIx and PM may have a condition affecting functionality.

PM may not be able to shut down torque produced by Drive Unit.

The FPGA detects a 5V supply regulator PGOOD is not working as expected.

Readings from 5V sensors may become erratic.

LV supply voltage to DI is disconnected or drops below lower voltage threshold.

The DI ECU triggers limp mode (see separate limpMode alerts) and cannot produce torque or power.

HVIL is no longer CLOSED

Contactors may not close

Stator anomaly observed during retry attempt

Drive unit may fault

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The PM detects a condition that requires it to intervene and disable powertrain.

Vehicle drive torque is immediately disabled.

The DIx power stage has applied a safe state.

Some DIx features may be disabled, or may not function expected. The Drive Unit may not function as expected.