Alerts
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| Signal Name | Description | Condition | Impact |
|---|---|---|---|
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Integrated Dynamic Brake (IDB) status message counter is incorrect.
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IDB_status CAN message is received with incorrectly incrementing counter for longer than 100 milliseconds.
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There may be an issue with the transmitting Electronic Control Unit (ECU) or CAN bus.
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Integrated Dynamic Brake (IDB) status message checksum is incorrect.
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The RCU receives the IDB_status CAN message with incorrect CRC for longer than 100 milliseconds.
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There may be an issue with the transmitting Electronic Control Unit (ECU).
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Integrated Dynamic Brake (IDB) status message was not received or message length is incorrect.
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The RCU did not receive the IDB_status CAN message for longer than 100 milliseconds or IDB_status is received with incorrect data length for longer than 100 milliseconds.
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There may be an issue with the transmitting Electronic Control Unit (ECU).
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Brake Booster (BB) status message counter is incorrect.
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BB_status CAN message is received with incorrectly incrementing counter for longer than 100 milliseconds.
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There may be an issue with the transmitting Electronic Control Unit (ECU) or CAN bus.
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Brake Booster (BB) status message checksum is incorrect.
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The RCU receives the BB_status CAN message with incorrect CRC for longer than 100 milliseconds.
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There may be an issue with the transmitting Electronic Control Unit (ECU).
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Brake Booster (BB) status message was not received or message length is incorrect.
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The RCU did not receive the BB_status CAN message for longer than 100 milliseconds or BB_status is received with incorrect data length for longer than 100 milliseconds.
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There may be an issue with the transmitting Electronic Control Unit (ECU).
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The Redundant Control Unit (RCU) has detected no traffic on the CHASSIS Controller Area Network (CAN) bus.
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The RCU has not received any messages on the CHASSIS CAN bus.
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There may be an issue with the CHASSIS CAN bus.
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The Redundant Control Unit (RCU) has detected no traffic on the PARTY Controller Area Network (CAN) bus.
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The RCU has not received any messages on the PARTY CAN bus.
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There may be an issue with the PARTY CAN bus.
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The Redundant Control Unit (RCU) has detected a hydraulic brake fluid leak.
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The RCU detects an internal or external hydraulic brake fluid leak or detects air in the hydraulic system.
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The RCU may not be able to perform backup power braking assist.
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The Redundant Control Unit (RCU) Application Specific Integrated Circuit (ASIC) is too hot.
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The RCU ASIC temperature exceeds 175 degrees Celsius.
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The RCU may not be able to perform backup power braking assist.
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The Redundant Control Unit (RCU) Micro Controller Unit (MCU) has experienced an issue.
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The RCU microcontroller has a software, hardware, or power supply issue.
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The RCU may not be able to perform backup power braking assist.
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The Redundant Control Unit (RCU) pedal travel sensor is not calibrated.
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The RCU pedal travel sensor is not calibrated.
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The RCU may not be able to perform backup power braking assist.
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The Redundant Control Unit (RCU) pedal travel sensor value disagrees with the Integrated Dynamic Brake's (IDB).
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The RCU does not receive the IDB pedal travel sensor signal via the Chassis or Party CAN bus for 50 milliseconds.
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The RCU may not use the Integrated Dynamic Brake (IDB) pedal travel sensor signal to determine driver brake pedal input.
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The Redundant Control Unit (RCU) has pedal travel sensor or sensor connection issue.
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The voltage supplied by the RCU to the pedal travel sensor is too high or low, the pedal travel sensor signal is not received, or the pedal travel sensor signal is received as invalid.
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The RCU may use the Integrated Dynamic Brake (IDB) pedal travel sensor signal to determine driver brake pedal input instead of the RCU's sensor.
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The Redundant Control Unit (RCU) received a low BB_brakeFluidLevel.
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The RCU receives the BB_brakeFluidLevel Controller Area Network (CAN) signal as BRAKE_FLUID_LEVEL_LOW for 5 seconds.
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There may be low brake fluid.
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The Redundant Control Unit (RCU) pressure sensor is not calibrated.
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The RCU pressure sensor is not calibrated.
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The RCU may not be able to perform backup power braking assist.
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The Redundant Control Unit (RCU) pressure sensor or sensor connection issue.
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The RCU has detected an invalid brake pressure sensor signal or is not receiving a pressure sensor signal.
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The RCU may not be able to perform backup power braking assist.
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Redundant Control Unit (RCU) Low Voltage (LV) state CAN signal from Front Vehicle Controller (VCFRONT) reports LV is on while the wake line voltage is off.
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VCFRONT RCU LV state signal VCFRONT_iBoosterLVState is received as LV_ON while the hardwired wake line (RCU connector pin 4) is off for more than 2 minutes while there is no power supply hard undervoltage.
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The RCU may not power on or shut down correctly.
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The Redundant Control Unit (RCU) power supply voltage is too low.
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The RCU power supply voltage is lower than 9 volts for 500 milliseconds or lower than 6.5 volts for 60 milliseconds.
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The RCU may not be able to perform backup power braking assist.
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The Redundant Control Unit (RCU) power supply voltage is too high.
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The RCU power supply voltage is higher than 18 volts for 2 seconds or higher than 19 volts for 500 milliseconds.
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The RCU may not be able to perform backup power braking assist.
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