Alerts

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.

No

The DIx current sensor hardware comparator has detected a peak on Phase B.

DIx may be inoperable.

No

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.

No

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.

No

The DI ECU detects an uncorrectable flash or RAM error.

This alert is for diagnostic logging purposes only.

No

The DIx power stage is not ready. One of the pre-drive gate driver checks has failed. There may be a condition affecting the DIx control board.

DIx may not function as expected.

No

The DI ECU resets for an unintended reason. Alert log signal data should provide more information on the specific reason.

The DI ECU is unavailable while it resets.

No

The DIx current sensor hardware comparator has detected a peak on Phase C.

DIx may be inoperable.

No

DIx has detected a condition affecting functionality at the gate driver on Phase A. View payload signal to confirm reason for alert.

DIx may be inoperable.

No

The DIx ECU has detected a peak in Phase A.

DIx may be inoperable.

No

Rotor offset mean estimator is above minimum rationality threshold at very low absolute torque outputs

Diagnostic alert data only, may indicate reduction in torque or excess heat accuracy

No

Not Available

Not Available

No

HVIL is no longer CLOSED

Contactors may not close

No

The DI detects the at-speed recovery mechanism encounters an error affecting its functionality. Alert log signal data provides information on the specific condition(s) detected.

The vehicle may lose propulsion.

No

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.

No

HV bus voltage exceeds set upper voltage threshold

Unable to produce torque/power from drive unit

No

Adverse oil pressure detected or DC current sensor rationality degraded, see reason payload

Drive Unit thermal estimation and limits are conservative, potential torque limiting with aggressive driving, recommend inspecting drive unit oil level and oil pump

No

Abnormal condition detected within drive unit subsystem. Look at limpReason in alert for exact trigger.

Drive system performance severely reduced (torque/power limited)

No

Motor regulation fails to meet command inputs

Drive unit enters unit limp mode (see DI_a126_limpMode)

No

Inverter detects a shorted switch

Inverter may not allow drive on next drive cycle

No