TPC TIREBOSS - Alerts

SERVICE MANUAL
TIREBOSS
TM
Tire Pressure Control
3-2
f:tec\manuals\Service\SERVICEv5.indd - V6-0615
TIREBOSS
™
ALERTS
The system has ten ‘alert conditions’. The following chart indicates the cause of the
alerts and some possible solutions. If the problem persists, contact TPC International or one of
their authorized installers, and speak to a service technician
CAB UNIT
LOW VOLTS
..the supply voltage to the Operator
Control Unit is less than 8.0 V on
12V systems or less than 20V on
24V systems
- check fuse and connections at main power
supply (battery) and at ignition power supply
- check ground connections at frame or battery
(must have a good ground connection)
- check wiring at Operator Control Unit for
breaks or poor connections
- check all plug-in connectors and ground con-
nections
ALERT
CAUSE POSSIBLE SOLUTIONS
VALVE UNIT
LOW VOLTS
..the supply voltage to the valve
control is less than 8.0 V on 12V
systems or less than 20V on 24V
systems
- check fuse and connections at main power
supply (battery)
- check ground connections at frame or battery
- check wiring at valve control for breaks or
poor connections
- check all plug-in connectors and ground con-
nections
TRANS. RANGE
ERROR
.. the system detects a tire pres-
sure signal from a transducer that
is either too low, i.e. less than zero
PSI, or too high, i.e. greater than
150 PSI
- check wiring at valve control or at transducer
for breaks or poor connections
- replace transducer
-recalibrate transducer
COM ERROR
..Operator Control Unit not
receiving proper communications
from valve control
- check cable connections... plug on back of op-
erator control or wiring within valve control unit
- check for broken, heat damaged or worn
Operator Control Unit cable between controller
and valve box
VALVE POWER
ERROR
..valve control detects valve cur-
rent when no current should be
present. Valve control detects no
valve current when current should
be present.
- check wiring at valve control for breaks or
poor connections
- check all plug-in connectors and ground con-
nections
VALVE UNIT
NO POWER
(see page 3-9
or 3-11)
..voltage is too low at the valve con-
trol module. There may be a fault
with the relay on the valve board
or the connections/wiring from the
valve board to Operator Control
Unit
- check fuse and connections at main power
supply (battery)
- check ground connections at frame or battery
- check wiring at valve control for breaks or
poor connections
- check all plug-in connectors and ground con-
nections
-replace cab control or valve board
(see page 3-15)