Alcolock V3 Series B2 12V ECU Manuel d'entretien - Page 4
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SERvICE pROCEdURES
In the event of an error code occurring, follow the series of actions in the following table to isolate
the error. Start with action 1, if the action is not the source of error, then go through the list and
carry out each subsequent action till you get to a conclusion. If a part of the interlock needs to be
changed, ensure that the correct replacement ECU is used depending on the voltage of the car
battery.
pART NUMbERS OF REpLACEMENT pARTS:
V3 Handset
V3 Series B2 24V ECU
V3 Series B2 12V ECU
MESSAGE
ADR incompatible
Clock Error
Communication error
ECU voltage incorrect
Error code 40
Error code 45
Error code 50
Handset voltage too high
79-009000
79-008847
79-008811
CAUSE
Handset or ECU hardware is
not ADR compatible.
No date/time information
has been received from the
tachograph over the CAN BUS.
Handset has lost
communication with ECU.
ECU is connected to wrong
voltage source.
Sampling pump piston within
the fuel cell is stuck in the rest
position.
Sampling pump piston within
the fuel cell is stuck in the
middle of the cylinder.
Sampling pump piston within
the fuel cell is stuck in the active
position.
Voltage reaching handset is too
high.
ACTIONS TO TAKE
1. Verify handset P/N.
2. Verify ECU P/N.
1. Check if tachograph is
functioning properly.
2. Check wiring from
tachograph to ECU.
3. Replace ECU.
1. Check voltage of vehicle
during ignition cranking.
Voltage should stay above
9V or 16V depending on
ECU.
2. Replace spiral cable.
3. Replace ECU.
4. Replace Handset.
1. Verify ECU P/N.
1. Replace handset.
1. Replace handset.
1. Replace handset.
1. Start motor and verify that
voltage supplied to ECU is
not above 20V or 32V.
2. Replace ECU.