Alerts
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| Signal Name | Description | Condition | Impact |
|---|---|---|---|
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An issue with the low voltage (LV) electrical system requires the vehicle to come to a stop immediately. The vehicle should enter graceful power-off (GPO) to exit drive, and a separate alert should indicate that condition.
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Lead acid: Low voltage (LV) battery voltage below threshold for 3 seconds (3s); transistor gating LV battery connection is open (no current flow); vehicle load shedding is active; or reverse battery transistor issue detected.
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The vehicle will not enter drive. If the vehicle is driving, it will exit drive through graceful power-off (GPO) to come to a stop immediately. A separate alert should be present to indicate the GPO
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The vehicle cannot enter Drive state because the measured low voltage (LV) battery voltage is too high.
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The measured LV battery voltage is greater than 16V for 3 consecutive seconds.
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Vehicle may be unable to drive, or may take longer than expected to enter Drive state. Voltage regulation performance may be reduced across the low voltage electrical system.
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The front vehicle controller (VCFRONT) detects the coolant valve actuator is clocked incorrectly on the coolant valve.
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The coolant valve actuator is clocked incorrectly on the coolant valve.
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Powertrain performance may be limited.
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Powertrain Pump Controller not responding on Local Interconnect Network (LIN)
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Powertrain Pump Controller not responding on Local Interconnect Network (LIN)
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Powertrain Pump Controls will not function
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Over multiple discharge and recharge cycles, the low voltage (LV) battery has been overcharged by more than 5 Amp hours (Ah) compared to initial charge level. Indicates a condition affecting LV battery performance that makes replacement necessary (another alert specific to replacement should be present). May also indicate aftermarket device(s) installed on the vehicle, whose current draw interferes with LV battery management.
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Over multiple charge cycles, the LV battery has recharged by more than 5Ah compared to the energy initially discharged.
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The LV battery may enter thermal runaway if the chronic overcharge condition is not resolved. The LV battery requires replacement, with a separate alert present to directly indicate that condition.
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The front vehicle controller was not able to go to sleep.
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The front vehicle controller started sleep sequence but was aborted.
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Higher SoC loss than expected, higher 12V draw than expected, possible unexpected alerts.
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The brushless motor has a condition affecting its functionality
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The Powertrain Pump motor controller detected an error
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The Powertrain Pump will not be able to run. The integrated circuit will clear the condition when the condition is no longer present
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The brushless motor has a condition affecting its functionality
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The Battery Pump motor controller detected an error
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The Battery Pump will not be able to run. The integrated circuit will clear the condition when the condition is no longer present
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The vehicle controller detects the chiller pump motor is experiencing a condition that is preventing the motor from running as expected.
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For at least 10.5 seconds, the chiller pump motor's RPM feedback is less than 800 RPM, or the chiller pump motor is intermittently or continually given a non-zero flow request.
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Powertrain performance may be limited.
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The vehicle cannot enter Drive state because the measured LV battery voltage is too low. This alert is intended to capture the LV battery conditions when drive blocking is activated and assist with diagnosis if primary alert drveBlckdVltgeTooLow cannot be logged by the vehicle Gateway (GTW) at time of initial occurrence due to LV undervoltage condition.
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The measured LV battery voltage dropped below the level required for the drive state for 0.5 seconds, and vehicle GTW is reported as available for logging.
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While this alert is primarily informational and intended for logging purposes, the vehicle may be unable to drive, or may take longer than expected to enter Drive state.
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The vehicle controller detects there is voltage mismatch greater than 0.5V between the input power to the front vehicle controller (VCFRONT) and the primary power steering circuit for the primary Electronic Power Assisted Steering (EPAS3P) electronic control unit (ECU).
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The voltage mismatch is greater than 0.5V between the VCFRONT printed circuit board assembly (PCBA) input voltage and the eFuse output voltage.
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Power steering may be limited or unavailable.
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The vehicle controller detects there is voltage mismatch greater than 0.5V between the input power to the front vehicle controller (VCFRONT) and the stability controller circuit for the Electronic Stability Program (ESP) electronic control unit (ECU).
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The voltage mismatch is greater than 0.5V between the VCFRONT printed circuit board assembly (PCBA) input voltage and the eFuse output voltage.
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Vehicle functions that rely on the ESP may be limited or may not function as expected.
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A Battery Monitoring Board (BMB) device has detected an over temperature condition
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Any BMB device in the daisy chain detects an over temperature condition
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May indicate the battery pack is operating under unintended conditions. This alert may result in loss of pack power
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The wipers have been disabled while the vehicle is in Factory Mode. The wiper enable routine must be run to restore wiper function.
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The vehicle is in Factory Mode and no communication from the wipers over local interconnect network (LIN) has been detected for more than 1 second.
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No wiper movement or function, even if wipers are connected.
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The vehicle controller detects the right cabin condenser electronic expansion valve (EXV) motor driver is reporting an electrical condition (short or disconnect).
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The right cabin condenser EXV motor driver reports an electrical condition (short or disconnect).
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Cabin climate control system air conditioning and heating may be limited or unavailable. Powertrain performance may be limited.
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The front vehicle controller detects a wiper module communication error, indicating the wiper module may be disconnected.
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The wiper module is powered for more than 500 ms and wiper communication errors over local interconnect network (LIN) are reported.
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No wiper functionality.
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The vehicle controller detects the left cabin condenser electronic expansion valve (EXV) motor driver is reporting an electrical condition (short or disconnect).
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The left cabin condenser EXV motor driver reports an electrical condition (short or disconnect).
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Cabin climate control system air conditioning and heating may be limited or unavailable. Powertrain performance may be limited.
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The vehicle controller detects the chiller electronic expansion valve (EXV) motor driver is reporting an electrical condition (short or disconnect).
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The chiller EXV motor driver is reporting an electrical condition (short or disconnect).
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Cabin climate control system air conditioning and heating may be limited or unavailable. Powertrain performance may be limited.
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The vehicle controller detects the phase is over current, limiting the thermal fan demand.
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The thermal fan detects its enable pin went low unexpectedly during normal operation. The thermal fan enable pin is lower 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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The vehicle controller detects the evaporator electronic expansion valve (EXV) motor driver is reporting an electrical condition (short or disconnect).
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The evaporator EXV motor driver is reporting an electrical condition (short or disconnect).
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Cabin climate control system air conditioning and heating may be limited or unavailable. Powertrain performance may be limited.
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