Alerts

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.

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.

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

Unable to produce torque/power from drive unit

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.

The DIx and PM estimate different amounts of torque production, causing a Cross Check mismatch. There may be a condition affecting DIx's or PM's ability to measure torque.

The vehicle may not accurately measure the level of torque being produced by the Drive Unit.

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

No direct impact. Could damage drive inverter if temperature 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.

Abnormal temperature measurements from DI coolant outlet sensor

Unable to monitor DI coolant outlet sensor temperature

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)

All stator sensors are giving abnormal measurements

Drive unit enters unit limp mode (see DI_a126_limpMode)

Drive Inverter temperature (refer payload signals for temperatures) exceeds upper temperature threshold

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

Ambient temperature (refer to pcbTemp) exceeds upper temperature threshold

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

Ambient temperature (refer to pcbTemp) drops below lower temperature threshold

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

Abnormal temperature measurements from ambient sensor

Unable to monitor ambient sensor temperature

Heatsink temperature (refer to heatsinkTemp) exceeds upper temperature threshold

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

Heatsink temperature (refer to heatsinkTemp) drops below lower temperature threshold

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

Abnormal temperature measurements from heatsink sensor

Unable to monitor heatsink sensor temperature

The DI ECU detects abnormal operation in the powertrain system. Alert log signal data provides information on the specific condition(s) detected.

The performance (torque and power of the drive system) is severely limited.

The torque production safety monitor has detected excess torque production and inhibited DIx torque production for the remainder of the drive cycle.

The torque production safety monitor will inhibit torque and excess heat production for the remainder of the drive cycle.