Version 5.0 DUT-E Installation Manual
© 2007-2011, JV Technoton 24 of 30
3.2 Diagnosis and troubleshooting of frequency DUT-E
Efficiency of
the frequency DUT-E
can be checked with a frequency meter by means of
measuring the frequency of output signal and verifying it with the data from Table 9.
Table 9. Malfunction of
frequency DUT-E
Output frequency, Hz
Malfunction reason
Troubleshooting
From 100 to 1600
No failures, normal operation
Check the recording and
display devices
More than 1600
Tubes of the measuring part
are
"
closed
"
; particles , dirt
or water in the tank
Clean the DUT-E and the fuel
tank of the vehicle
Less than 100
No contact of the measuring
part with the electronic
board; failures in the
electronic board; cutting for
more than 30%; no power to
DUT-E
Give power supply to DUT-E
Contact a regional service
center
3.3 Diagnosis and troubleshooting of digital DUT-E
Efficiency of
digital DUT-E
is checked by connecting it to the DUT-E Service kit.
When any malfunction of
the digital DUT-E
occurs, an error code is transferred in the
temperature field. Error codes are listed in Table 10.
Table 10. Malfunction of
digital DUT-E
Error code
Description
255
Sensor is not calibrated
254
Sensor is not calibrated till maximum
253
Electrical interlocking of the sensor tubes
250,249
Another fuel type (i.e. not the one used by calibration) or dirt