Alerts

The DI ECU is not receiving the expected CAN communication from the ESP, and considers it irrational or MIA.

The DI ECU is unable to monitor the state of the ESP.

The DI ECU is not receiving the expected CAN communication from the PM, and considers it irrational or MIA.

The DI ECU is unable to monitor the state of the PM.

The DI ECU is not receiving the expected CAN communication from the GTW, and considers it irrational or MIA.

The DI ECU is unable to monitor the state of the GTW.

Bus voltage is high while active discharge is ON

Potentially exposed high voltage

Any ADC channel reference is above the maximum rational value.

The vehicle is blocked from shifting out of Park.

Any ADC channel reference is below the minimum rational value.

The vehicle is blocked from shifting out of Park.

LV supply voltage to DI (refer to lvSupply) is disconnected or drops below lower voltage threshold

Drive unit enters unit limp mode (see DI_a126_limpMode)

LV supply voltage to DI exceeds the set upper voltage limit.

No immediate impact. Could damage drive inverter LV hardware if LV is continuously too high.

DI coolant outlet temperature (refer to outletTemp) drops below lower temperature threshold

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

DI coolant outlet temperature (refer to outletTemp) exceeds upper temperature threshold

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

The Secondary Disconnect Controller (SDC) is not communicating to the Drive Inverter (DI), or there is a mismatch between their interface version.

The Secondary Disconnect Controller (SDC) may not be monitoring potential drive unit failures.

When HV bus is up, DI measured bus voltage very low or disagrees with BMS reported voltage

Drive unit enters unit limp mode (see DI_a126_limpMode), faults (Model 3 only)

HV bus voltage (refer to busVoltage) drops below lower voltage threshold (refer to busHighLimit)

Unable to produce torque/power from drive unit

Abnormal temperature measurements from DI coolant outlet sensor

Unable to monitor DI coolant outlet sensor temperature

HV bus voltage (refer to busVoltage) exceeds upper voltage theshold (refer to busHighLimit)

Unable to produce torque/power from drive unit

Imbalanced phase currents detected. See payload signals for reason of trigger

Drive unit enters unit limp mode (see DI_a126_limpMode)

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.

The DIx Phase A 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.

Stator temperature exceeds upper temperature threshold

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

Abnormal temperature measurements from stator sensor 1

Stator sensor 2 will be used instead (if available)