Alerts
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| Signal Name | Description | Condition | Impact |
|---|---|---|---|
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High side tractor solenoid short circuit detected.
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Hardware issue detected with the high side solenoid relay
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Loss of tractor/trailer functionality
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Low side trailer switch short or open circuit detected - Internal to Hardware.
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Hardware issue detected with the trailer low side switch
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Loss of trailer functionality
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Low side tractor switch short or open circuit detected - Internal to Hardware.
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Hardware issue detected with the tractor low side switch
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Loss of tractor functionality
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Trailer solenoid release pin/wire short detected.
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Short detected on the trailer solenoid release line
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Not able to apply and release trailer park brakes
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Trailer solenoid apply pin/wire short detected.
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Short detected on the trailer solenoid apply line
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Not able to apply and release trailer park brakes
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Tractor solenoid release pin/wire short detected.
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Short detected on the tractor solenoid release line
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Not able to apply and release tractor park brakes
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Tractor solenoid apply pin/wire short detected.
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Short detected on the tractor solenoid apply line
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Not able to apply and release tractor park brakes
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Trailer pressure sensor supply pin/wire short detected.
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Short on the trailer pressure sensor supply pin detected
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Loss of trailer pressure sensing
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Tractor pressure sensor supply pin/wire short detected.
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Short on the tractor pressure sensor supply pin detected
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Loss of tractor pressure sensing
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The Pneumatic Park Brake (PPB) electronic control unit (ECU) detects a hardware condition on the occupancy sensor, or it does not receive the expected cabin door status from the Left Vehicle Controller (VCLEFT) over the Controller Area Network (CAN).
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The PPB ECU does not receive the expected cabin door status from the VCLEFT and/or detects a hardware condition on the occupancy sensor.
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The Anti-Rollaway feature may be unavailable.
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The Pneumatic Park Brake (PPB) electronic control unit (ECU) detects a hardware condition on the occupancy sensor, or it does not receive the expected cabin door status from the Left Vehicle Controller (VCLEFT) over the Controller Area Network (CAN).
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The PPB ECU does not receive the expected cabin door status from the VCLEFT and/or detects a hardware condition on the occupancy sensor.
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The Anti-Rollaway feature may be unavailable.
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Auxillary pressure sensor may be shorted.
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Auxillary pressure sensor becomes shorted
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Loss of auxillary pressure sensor output
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PCBA may be shorted internally.
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Internal PCBA Short on PPB detected
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Unable to preform checks on PPB
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Trailer pressure sensor may be shorted.
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Trailer pressure sensor becomes shorted
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Loss of ability to read trailer pressure sensor
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Tractor pressure sensor may be shorted.
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Tractor pressure sensor becomes shorted
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Loss of ability to read tractor pressure sensor
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Park Brake LV Battery voltage fault.
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Battery voltage is above 17V or below 9V threshold
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All park brake features disabled
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Pedal Monitor Warning: Torque Intervention
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-
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Pedal Monitor Warning: Pedal map mismatch
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-
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Pedal Monitor Warning: DI and PM versions do not match
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-
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Unpark prevented due to vehicle starting up.
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Driver attempts to unpark while vehicle is starting up
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Tractor/Trailer unpark request not honored
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