Alerts
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| Signal Name | Description | Condition | Impact |
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The Power Conversion System (PCS) Overvoltage (OV) Clamp Protection Circuit self-test is unsuccessful due to circuit voltage readings outside of the normal operating range, which may prevent the circuit from operating as expected.
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The PCS OV Clamp Protection Circuit self-test is unsuccessful because the circuit voltage readings are outside of the normal operating range.
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The PCS OV Clamp Protection Circuit may not function as expected.
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Power Conversion Sustem (PCS) overvoltage shutdown protection has tripped on the Rear Vehicle Controller (VCREAR).
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48V bus is reported overvoltage on VCREAR while the vehicle is in Drive.
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PCS DCDC is shut down and unavailable.
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Undervoltage loadshed protection has tripped on the Rear Vehicle Controller (VCREAR). Low Voltage (LV) bridge is expected to be open until the protection is cleared.
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48V bus is reported undervoltage on VCREAR while the vehicle is in Drive.
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LV bridge is open. Impacted load(s) unavailable in Drive.
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Power Conversion System (PCS) Overvoltage Shutdown protection has become active on the Rear Vehicle Controller (VCREAR).
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Overvoltage condition on 48V bus detected by VCREAR while the vehicle is in drive.
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PCS is unavailable due to overvoltage shutdown protection becoming active. Separate LVUnhealthy alert indicating a condition affecting low voltage (LV) electrical system will also be present.
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The Electronic Parking Brake (EPB) reports the driver is leaving and parks the vehicle.
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The EPB attempted to park due to the driver being detected as leaving.
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The EPB will be applied.
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The Rear Vehicle Controller (VCREAR) precharge circuit did not raise the voltage to the target voltage in the expected amount of time.
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The load voltage does not meet the power source voltage in the expected amount of time.
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The load being precharged may not turn on. Vehicle functions relying on the load being precharged may not operate as expected.
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Electronic Parking Brake apply failed.
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Electronic Parking Brake faulted during apply && (nonterminal == TRUE) && (stateRequest != ESM_DYNAMIC)
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Electronic Parking Brake may not be applied, and caliper may be obstructed
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Electronic Parking Brake was unable to release fully.
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Electronic Parking Brake faulted during release && (nonterminal == TRUE)
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Electronic Parking Brake may not be released, and caliper may be obstructed
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Electronic Parking Brake was not able to determine caliper state on boot.
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Caliper state saved is unknown, corrupted, or mismatches Electronic Parking Brake Monitor
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Problem with initializing Electronic Parking Brake
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Electronic Parking Brake release was interrupted. Release will be retried.
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(unitFaultStatus == FAULT_STATUS_RETRY) && (csmRequest == release)
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Electronic Parking Brake did not release, it will retry a release and enter fault if retry fails
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Electronic Parking Brake apply failed.
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Electronic Parking Brake faulted during apply && (nonterminal == FALSE)
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Electronic Parking Brake apply in progress will be stopped due to the fault, caliper may not be fully applied
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Electronic Parking Brake apply was interrupted. Apply will be retried.
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(unitFaultStatus == FAULT_STATUS_RETRY) && (csmRequest == apply) && (stateRequest != ESM_DYNAMIC)
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Electronic Parking Brake did not apply, it will retry an apply and enter fault if retry fails
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Power Conversion System (PCS) overvoltage clamp protection has tripped on the Rear Vehicle Controller (VCREAR).
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48V bus is reported greater than 56V on VCREAR while the PVS overvoltage clamp protection is armed.
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This alert is primarily informational and is used for logging purposes. No expected impact on vehicle functionality.
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Motor negative lead voltage is lower than expected while active
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The negative lead voltage measurement is lower than expected. The expected value is the lower of 16.5 volts, or the estimated PWM voltage.
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Caliper motor or harness may be damaged
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Motor positive lead voltage is higher than expected while active
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The positive lead voltage measurement is higher than expected. This could be higher than 0.1 voltages if motor is driven in release direction, or higher than estimated PWM voltage if driven in the apply direction.
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Caliper motor or harness may be damaged
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One or more of the messages the vehicle controller receives periodically from the rear left door controller (VCDOORRL) is not received, indicating the VCDOORRL may be unavailable (MIA).
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The vehicle controller does not receive one or more of the expected messages from the VCDOORRL within the expected time frame.
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Vehicle functions that depend on the VCDOORRL may be unavailable or may not function as expected.
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Motor positive lead voltage is lower than expected while active
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The positive lead voltage measurement is lower than expected. The expected value is the lower of 16.5 volts, or the estimated PWM voltage.
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Caliper motor or harness may be damaged
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The battery voltage measurement, nominally 12 volts, was higher than expected.
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The vbat voltage measurement is higher than 18.5 volts.
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12V Battery or low voltage systems may be damaged
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Recovery limp mode activated based on user acknowledgment of possible shutdown and limited drive torque / functionality.
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User acknowledges limited drive torque and possible shutdown, after steering system has been detected as partially compromised and vehicle has been brought to a stop, and shifts out of Park.
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Vehicle speed limited to less than 5 mph. Brakes eventually applied automatically to bring vehicle to a stop.
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The battery voltage measurement, nominally 12 volts, was lower than expected.
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The vbat voltage measurement, is lower than 6.0 volts. If the measurement is lower than 0.25 volts, we do not set this alert, as this would indicated the switch supply is disabled.
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12V Battery or low voltage systems may be damaged
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