Alerts
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| Signal Name | Description | Condition | Impact |
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The front vehicle controller (VCFRONT) detects the voltage on the lockout circuit is not high enough when the right vehicle controller (VCRIGHT) reports the lockout circuit active, indicating the eFuse lockout is not successfully asserted.
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VCFRONT detects the voltage on the lockout circuit is not measured at 5V over 2 seconds when VCRIGHT reports that the lockout circuit is active.
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No functionality should be directly affected when eFuse lockout is missing. However, one or more eFuses may toggle between enabled / not enabled states if the VCFRONT is reset and its non-volatile random access memory (NVRAM) does not function as expected. Note: VCFRONT should not attempt to toggle eFuses via the enable line when lockout is asserted, even after a reset.
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The headlamp control module has detected an electrical problem.
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A short to VBAT is detected in the left or right headlamp module.
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One or both headlamps may not function.
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The coolant valve has stalled while trying to reach a specific angle target. Cabin HVAC / climate control cooling (air conditioning) may be limited and drive power may be reduced.
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Coolant valve has stalled when attempting to reach an angle target.
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Cabin HVAC / climate control cooling (air conditioning) may be limited. Drive power may also be limited due to low coolant flow, and a separate alert will be present to indicate this condition.
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The vehicle controller detects a condition affecting the refrigerant compressor, which may prevent the refrigerant compressor from running as expected. This alert is set in addition to one or more alert(s) indicating a specific condition affecting refrigerant compressor functionality.
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At least one additional alert is present indicating a condition affecting refrigerant compressor functionality. Alert log signal data should provide more information on the specific condition(s) detected.
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Cabin climate control system air conditioning may be limited or unavailable. Powertrain performance may be limited.
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The vehicle controller detects the front louver, or active grill shutter (AGS), motor is disconnected.
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The front louver motor is disconnected for more than 30 seconds.
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Cabin climate control system air conditioning may be limited or unavailable. Powertrain performance may be limited.
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The vehicle controller detects the refrigerant compressor is reporting an internal condition.
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The refrigerant compressor reports an internal condition, or the high voltage (HV) supply is higher than expected.
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Cabin climate control system air conditioning may be limited or unavailable. Powertrain performance may be limited.
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Drive has been requested while a charge cable is connected to the vehicle. The vehicle cannot enter drive until the charge cable has been disconnected.
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Drive request while a charge cable is connected to the vehicle.
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Vehicle will not drive until the charge cable is disconnected.
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The vehicle controller detects the thermal fan motor is unable to reach the target RPM, which may prevent the thermal fan from running as expected.
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The thermal fan motor is unable to reach the target RPM.
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Cabin climate control system air conditioning may be limited or unavailable. Powertrain performance may be limited.
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The vehicle controller detects the front louver, or active grill shutter (AGS), is unable to calibrate and traveled farther than the expected range without reaching the end stop, indicating the front louver may be damaged.
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The front louver does not pass the calibration range check after 5 calibration cycles due to over-travel.
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Cabin climate control system air conditioning may be limited or unavailable. Powertrain performance may be limited.
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The vehicle controller detects the front louver, or active grill shutter (AGS), is reporting a blockage.
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The front louver does not pass the calibration range check after 5 calibration cycles due to under-travel.
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Cabin climate control system air conditioning may be limited or unavailable. Powertrain performance may be limited.
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The vehicle controller detects the LV8907 integrated circuit on the thermal fan motor issued a circuit warning, which may prevent the thermal fan from running as expected.
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The LV8907 integrated circuit on the thermal fan motor issues a circuit warning that prevents the motor controller from driving the motor.
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Cabin climate control system air conditioning may be limited or unavailable. Powertrain performance may be limited.
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The vehicle controller detects the chiller pump motor is unable to reach the target RPM, which may prevent the chiller pump from running as expected.
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The chiller pump motor is unable to reach the target RPM.
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Powertrain performance may be limited.
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Refrigerant compressor operation is inhibited. Cabin cooling (air conditioning) will be disabled. Powertrain performance may be limited. Other alerts relevant to the specific condition should be present, including refrigDischg (refrigerant discharge), refrigSuct (refrigerant suction), exvMotor (chiller EXV motor), evapSolenoid (evaporator solenoid), or thmlFan (thermal fan) alerts.
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A condition affecting refrigerant system hardware is detected, the refrigerant compressor has an internal condition affecting performance, or other abnormal refrigerant system conditions are detected.
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Cabin cooling (air conditioning) will be disabled. Powertrain performance may be limited.
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The vehicle controller detects the powertrain pump motor is unable to reach the target RPM, which may prevent the powertrain pump from running as expected.
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The powertrain pump motor is unable to reach the target RPM.
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Powertrain performance may be limited.
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The vehicle is in a self-test state, which typically indicates a self-test of a vehicle component, system, or functionality is running. Some functions will be inhibited, and some non-standard behaviors will occur.
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The vehicle is in a self-test state.
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Some functions will be inhibited, and some non-standard behaviors will occur.
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One or more of the messages the vehicle controller receives periodically from the high voltage (HV) Battery Management System (BMS) electronic control unit (ECU) is not received, indicating the BMS ECU may be unavailable (MIA).
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The vehicle controller does not receive one or more of the expected messages from the HVBMS ECU within the expected time frame.
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The vehicle may be unable to drive or charge.
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One or more of the messages the vehicle controller receives periodically from the front drive inverter (DIF) electronic control unit (ECU) is not received, indicating the DIF ECU may be unavailable (MIA).
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One or more of the expected messages from the DIF ECU is not received.
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Vehicle speed and power may be limited. Thermal management system features depending on DIF functionality may be limited or unavailable.
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One or more of the messages the vehicle controller receives periodically from the power conversion system (PCS) electronic control unit (ECU) is not received, indicating the PCS ECU may be unavailable (MIA).
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One or more of the expected messages from the PCS ECU is not received.
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The vehicle may be unable to charge.
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One or more of the messages the vehicle controller receives periodically from the Restraint Control Module (RCM) is not received, indicating the RCM may be unavailable (MIA).
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The vehicle controller does not receive one or more of the expected messages from the RCM within the expected time frame.
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Vehicle functions that depend on the RCM may be unavailable or may not function as expected.
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One or more of the messages the vehicle controller receives periodically from the charge port (CP) electronic control unit (ECU) is not received, indicating the CP ECU may be unavailable (MIA).
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The vehicle controller does not receive one or more of the expected messages from the CP ECU within the expected time frame.
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Charging may not start or may be interrupted unexpectedly.
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