61
Workshop Manual
Smart Tachograph EFAS-4.10/4.11
SrvID
hex
EFT
hex
DTC Symbol
Display text
Description and trouble-shooting
S30
16
18 80 00 000800
! Security
violation
and nally
Service!
SrvID: S30
Meaning / Cause:
The tachograph has an error in the current time or has detected
a malfunction in the integrated clock. Further data recording
is no longer possible. Data recording is not continued in order
to avoid inconsistent data. Tachograph smart-cards, with the
exception of workshop smart-cards and control cards, are no
longer accepted.
Measures:
y Insert the workshop smart-card and check the clock signal
at the front interface.
y Set and check the current time in UTC, disconnect EFAS from
the supply voltage for a few minutes and check whether the
fault reoccurs.
y In case of a defect in the integrated clock the tachograph
must be replaced.
S31 - - 80 00 000900 - - - Meaning / Cause:
EFAS detects motion sensor pulses when the ignition is switched
o.
The following causes are possible:
y The vehicle is being moved manually or being towed.
y The ignition signal is not detected by the recording
equipment.
y There is a malfunction in the motion sensor signal or the
supply voltage.
Measures:
y Check the voltage level of the ignition signal at EFAS pins A3
/ terminal 15.
y For the ignition signal and for the motion sensor check
the corresponding contacts and feed cables at the A and
B connectors of EFAS and check the motion sensor for any
damaged location and contact problems.
16 The EFT for this event or the malfunction is not stored to the mass memory in the CALIBRATION operating mode. Information appears in the display with the specication of the
SrvID that this event or malfunction has been detected for a short duration.