TPC TIREBOSS - Heater Current Error

SERVICE MANUAL
TIREBOSS
TM
Tire Pressure Control
3-3
f:tec\manuals\Service\SERVICEv5.indd - V6-0615
CAUSE
TEMP SENSOR
ERROR
..the thermistor (valve block tem-
perature sensor) has malfunctioned
- check thermistor wires at valve board
- change thermistor
HEATER
CURRENT
ERROR
(see page 3-4
or page 3-6)
..the valve control detects heater
current when there should be no
current or detects no heater current
when there should be
- check heater wiring for breaks or poor con-
nections
- check all plug-in connectors and ground con-
nections
-test ohms resistance at heaters to determine if
faulty heater
-check VB program (TPC only)
ALERT
POSSIBLE SOLUTIONS
CURRENT
ERROR
..the valve control detects sole-
noid current when the valve is not
infl ating or defl ating or detects no
solenoid current when the valve is
infl ating or defl ating.
- remove the solenoid harness and ensure
there is a good connection on the pins and
receptacle
- check the connections on the corresponding
end on the valve board
- Replace the solenoid harness or solenoid
TRANSDUCER
ERROR
..the Operator Control Unit can-
not locate valve transducer and/or
transducers
- check transducer wiring or connections within
valve control unit
- check operator control cable for worn or bro-
ken wires
- change transducer