Alerts

The DI ECU detects an uncorrectable flash or RAM error.

This alert is for diagnostic logging purposes only.

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.

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.

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

DIx may be inoperable.

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

DIx may be inoperable.

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

DIx may be inoperable.

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

DIx may be inoperable.

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.

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

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.

Software detects a shorted semiconductor switch. The alert log signals provide detailed trigger algorithm info.

The motor is permanently disabled.

Drive unit rotor offset, rotor flux, or resolver error learning routine is in progress.

Drive unit torque is limited and pending spindown sequence.

The DI ECU does not receive the expected CAN messages from TAS.

TAS may be unavailable.

The DI ECU does not receive the expected CAN messages from the PCS.

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

The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a condition that prevents the drive unit(s) from generating excess heat. Alert log signal data provides information on the specific condition(s) detected.

The drive unit(s) cannot produce excess heat when requested.

HV bus voltage exceeds set upper voltage threshold

Unable to produce torque/power from drive unit

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

Motor regulation fails to meet command inputs

Drive unit enters unit limp mode (see DI_a126_limpMode)

Inverter detects a shorted switch

Inverter may not allow drive on next drive cycle

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

Drive system performance severely reduced (torque/power limited)