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Missing / Corrupted Input
J1939: All Data Lost
Occupancy Sensors
(Driver Door Status)
(Passenger Door Status)
(SLS Input)
(Seat Belt Status - if applicable)
Input Missing, Input Stuck, Not Satisfied
Power Unit Pressure Sensor
Towed Unit Pressure Sensor
Occupancy Sensor
(Wire Harness Resistor RA Open)
See Figure 9 for more details.
Occupancy Sensor
(Wire Harness Resistor RA Shorted)
See Figure 9 for more details.
Occupancy Sensor
(Wire Harness Resistor RB Open)
See Figure 9 for more details.
Table 5 – Fallback Modes
18
Fallback Mode
•
System fault displayed on LEDs
•
Power and towed unit park status is available
•
Park brake release interlock available
•
Rollaway Mitigation not available
•
Auto Trailer Brake Release not available
•
Manual switch operation available
•
System fault displayed on LEDs
•
Power and towed unit park status is available
•
Park brake release interlock prevents vehicle from
being unparked
•
Rollaway Mitigation not available
•
Auto Trailer Brake Release not available
•
Manual exhaust switch operation available
•
Manual deliver switch operation available when
moving
•
Power unit fault displayed on LEDs
•
Power unit park status not available
•
Towed unit park status available
•
Park brake release interlock available
•
Rollaway Mitigation is completely or
partially unavailable
•
Auto Trailer Brake Release available
•
Manual switch operation available
•
Towed unit fault displayed on LEDs
•
Power unit park status available
•
Towed unit park status not available
•
Park brake release interlock available
•
Rollaway Mitigation available
•
Auto Trailer Brake Release not available
•
Manual switch operation available
•
System fault displayed on LEDs
•
Power and towed unit park status is available
•
Park brake release interlock prevents vehicle from
being unparked
•
Rollaway Mitigation not available
•
Auto Trailer Brake Release not available
•
Manual exhaust switch operation available
•
System fault displayed on LEDs
•
Power and towed unit park status is available
•
Park brake release interlock prevents vehicle from
being unparked
•
Rollaway Mitigation not available
•
Auto Trailer Brake Release not available
•
Manual exhaust switch operation available
•
System fault displayed on LEDs
•
Power and towed unit park status is available
•
Park brake release interlock prevents vehicle from
being unparked
•
Rollaway Mitigation not available
•
Auto Trailer Brake Release not available
•
Manual exhaust switch operation available
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