DAF LF45, LF55 Series. Manual — part 16

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1-3

AS Tronic fault codes

AS TRONIC

DAVIE XD diagnostics manual

3

512

Incorrect or missing desired engine torque signal
via message on CAN network (derived from
engine management accelerator pedal position
signal)

When driving:
-

clutch may close abruptly after changing
gears, which affects the shifting quality

-

automatic mode not available

At standstill:
-

driving off from a stationary position is
possible

513

Incorrect or missing current engine torque signal
via message on CAN network

When driving:
-

shifting quality when shifting up and down
may have been affected

-

automatic mode not available

At standstill:
-

driving off from a stationary position is
possible

520

Incorrect or missing current intarder brake torque
via message on CAN network

-

Automatic mode not available

-

No further system limitation

Incorrect or missing current engine braking
torque signal via message on CAN network

-

If the engine brake is active, this may affect
the shifting quality when shifting is started

-

Automatic mode not available

556

Incorrect or missing intarder configuration signal
via message on CAN network

-

Automatic mode not available

-

No noticeable system limitation

Incorrect or missing engine brake configuration
signal via message on CAN network

-

Automatic mode not available

-

No noticeable system limitation

558

Incorrect or missing signal from the accelerator
pedal idling switch via message on CAN network

When driving:
-

automatic mode not available

-

no noticeable system limitation when driving

At standstill:
-

no response to the accelerator pedal as a
result of which it is not possible to drive off
from a stationary position

559

Incorrect or missing kickdown signal via message
on CAN network

-

Kickdown function not available

-

No noticeable system limitation

-

Automatic mode available

561

Incorrect or missing ASR engine control "active"
signal via message on CAN network

-

Automatic mode not available

-

No noticeable system limitation

562

Incorrect or missing ASR differential brake control
"active" signal via message on CAN network

-

Automatic mode not available

-

No noticeable system limitation

563

Incorrect or missing ABS "active" signal via
message on CAN network

-

Automatic mode not available

-

No noticeable system limitation

595

Incorrect or missing cruise control "active" signal
via message on CAN network

-

Automatic mode not available

-

No noticeable system limitation

597

Incorrect or missing service brake switch signal
via message on CAN network

-

Automatic mode not available

-

When the vehicle is coasting, the clutch will
be opened at a vehicle speed exceeding
1.5 km/h.

904

Incorrect or missing front axle speed signal via
message on CAN network

-

Automatic mode available

-

No noticeable system limitation

Fault code

Fault code description with possible cause

Symptom

AS TRONIC

1-4

©

AS Tronic fault codes

3

DAVIE XD diagnostics manual

1623

Incorrect or missing tachograph speed signal via
message on CAN network

-

Automatic mode available

-

If there is an internal speed signal, no
noticeable system limitation

3002

Modulator, selector valve Y2 for splitter range:
-

short circuit to earth

-

interruption

-

Automatic mode not available

-

If the fault occurs during shifting, the
engaged gear will remain engaged. The
modulator will try to shift the vehicle to a
suitable gear, both at standstill and when
driving. If this is not possible, the gearbox
will be shifted to the neutral position.

-

short circuit to supply

-

Automatic mode not available

-

If the fault occurs during shifting, the
engaged gear will remain engaged. The
modulator will try to shift the vehicle to a
suitable gear, both at standstill and when
driving. If this is not possible, the gearbox
will be shifted to the neutral position.

-

PTO 1/2 cannot be selected

-

Manoeuvring position not available in D
and R

3003

Modulator, selector valve Y3 for splitter range:
-

short circuit to supply

-

interruption

-

Automatic mode not available

-

If the fault occurs during shifting, the
engaged gear will remain engaged. The
modulator will try to shift the vehicle to a
suitable gear, both at standstill and when
driving. If this is not possible, the gearbox
will be shifted to the neutral position.

-

short circuit to earth

-

Automatic mode not available

-

If the fault occurs during shifting, the
engaged gear will remain engaged. The
modulator will try to shift the vehicle to a
suitable gear, both at standstill and when
driving. If this is not possible, the gearbox
will be shifted to the neutral position.

-

PTO 1/2 cannot be selected

-Manoeuvring position not available in D and R

3004

Modulator, selector valve Y4 for gate selection:
-

short circuit to earth

-

interruption

-

Automatic mode not available

-

If the fault occurs during shifting, the
engaged gear will remain engaged. The
modulator will try to shift the vehicle to a
suitable gear, both at standstill and when
driving. If this is not possible, the gearbox
will be shifted to the neutral position.

-

short circuit to supply

-

Automatic mode not available

-

If the fault occurs during shifting, the
engaged gear will remain engaged. The
modulator will try to shift the vehicle to a
suitable gear, both at standstill and when
driving. If this is not possible, the gearbox
will be shifted to the neutral position.

-

Manoeuvring position not available in D

Fault code

Fault code description with possible cause

Symptom

©

1-5

AS Tronic fault codes

AS TRONIC

DAVIE XD diagnostics manual

3

3005

Modulator, selector valve Y5 for gate selection:
-

short circuit to earth

-

short circuit to supply

-

interruption

-

Automatic mode not available

-

If the fault occurs during shifting, the
engaged gear will remain engaged. The
modulator will try to shift the vehicle to an
adjusted gear. If this is not possible, the
gearbox will be shifted to the neutral
position.

3006

Modulator, selector valve Y6 for main range:
-

short circuit to earth

-

short circuit to supply

-

interruption

-

Automatic mode not available

-

If the fault occurs during shifting, the
engaged gear will remain engaged. The
modulator will try to shift the vehicle to an
adjusted gear. If this is not possible, the
gearbox will be shifted to the neutral
position.

3007

Modulator, selector valve Y7 for main range:
-

short circuit to earth

-

short circuit to supply

-

interruption

-

Automatic mode not available

-

If the fault occurs during shifting, the
engaged gear will remain engaged. The
modulator will try to shift the vehicle to an
adjusted gear. If this is not possible, the
gearbox will be shifted to the neutral
position.

3008

Modulator, selector valve Y8 for rear-mounted
range box:
-

short circuit to earth

-

short circuit to supply

-

interruption

-

Automatic mode not available

-

Shifting to low range is no longer possible

-

If the fault occurs during shifting, the
engaged gear will remain engaged. The
modulator will try to shift the vehicle to an
adjusted gear. If this is not possible, the
gearbox will be shifted to the neutral
position.

3009

Modulator, selector valve Y9 for rear-mounted
range box:
-

short circuit to earth

-

short circuit to supply

-

interruption

-

Automatic mode not available

-

Shifting to high range is no longer possible

-

If the fault occurs during shifting, the
engaged gear will remain engaged. The
modulator will try to shift the vehicle to an
adjusted gear. If this is not possible, the
gearbox will be shifted to the neutral
position.

3010

Modulator, air supply main valve Y10:
-

short circuit to earth

-

interruption

When driving:
-

no more gear changes possible

-

the gearbox cannot shift to the neutral
position: the engaged gear remains
engaged.

At standstill:
-

if the problem already exists when the
ignition is switched on, the system is not
available; it is therefore not possible to drive
off.

-

short circuit to supply

When driving:
-

automatic mode not available

-

shifting to all gears is possible

At standstill:
-

driving off from a stationary position is
possible

Fault code

Fault code description with possible cause

Symptom

AS TRONIC

1-6

©

AS Tronic fault codes

3

DAVIE XD diagnostics manual

3012

Short circuit to earth or interruption at output for
power supply to reversing light relay (G350):
-

pin C9 of actuating unit (D955)

-

Actuating unit output switches off

-

Reversing lights cannot be switched on

-

Automatic mode remains available

-

No noticeable system limitation

Short circuit to supply at output for power supply
to reversing light relay (G350):
-

pin C9 of actuating unit (D955)

-

Reversing lights continuously switched on

-

Automatic mode remains available

-

No noticeable system limitation

3017

Modulator, selector valve Y1 for transmission
brake:
-

short circuit to earth

When driving:
-

extended shifting time when shifting up
(engine control now also synchronises when
shifting up)

-

shifting up blocked if the speed of the input
shaft drops below the idling speed of the
engine after shifting

-

automatic mode not available

At standstill:
-

extended self-test (mechanical position of
the clutch more difficult to determine)

-

extended shifting time when engaging a
gear from neutral position

-

extended PTO engaging time

-

interruption

When driving:
-

extended shifting time when shifting up
(engine control now also synchronises when
shifting up)

-

shifting up blocked if the speed of the input
shaft drops below the idling speed of the
engine after shifting

-

automatic mode not available

At standstill:
-

extended self-test (mechanical position of
the clutch more difficult to determine)

-

extended shifting time when engaging a
gear from neutral position

-

driving off from a stationary position is
possible

-

short circuit to supply

When driving:
-

no more gear changes possible

-

automatic mode not available

At standstill:
-

driving off from a stationary position is
possible

-

extended shifting time, air supply main valve
is not switched on until the clutch has been
opened

Fault code

Fault code description with possible cause

Symptom