DAF 95XF. Manual — part 170

©

200438

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

©

200438

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

©

200438

1-7

AS Tronic fault codes

AS TRONIC

DAVIE XD diagnostics manual

3

3018

Short circuit to earth or interruption of selector
valve Y17 (slowly open clutch):
-

pin B9 of modulator (D954)

-

Modulator output is switched off

-

Selector valve Y16 (quickly open clutch)
takes over function

-

Reduced comfort during clutching

-

No automatic mode available

Short circuit to supply of selector valve Y17
(slowly open clutch):
-

pin B9 of modulator (D954)

-

No more gear changes possible, system not
available

-

At standstill the gearbox will automatically
be shifted to the neutral position if the clutch
is open

3019

Short circuit to earth or interruption of selector
valve Y15 (close clutch slowly):
-

pin B7 of modulator (D954)

-

Modulator output is switched off

-

Selector valve Y14 (close clutch rapidly)
takes over function

-

Reduced comfort during clutching

-

No automatic mode available

Short circuit to supply of selector valve Y15 (close
clutch slowly):
-

pin B7 of modulator (D954)

-

No more gear changes possible, system not
available

-

When driving, the required clutch position is
controlled by selector valves (clutch open)

-

At standstill the gearbox is automatically
shifted to the neutral position after a few
seconds

3020

Short circuit to earth or interruption of selector
valve Y16 (open clutch rapidly):
-

pin B12 of modulator (D954)

-

Modulator output is switched off

-

Selector valve Y17 (open clutch slowly)
takes over function

-

Extended shifting time

-

Reduced comfort during clutching

-

No automatic mode available

Short circuit to supply of selector valve Y16 (open
clutch rapidly):
-

pin B12 of modulator (D954)

-

Actuating unit (D955) is switched off

-

System not available

3021

Short circuit to earth or interruption of selector
valve Y14 (close clutch rapidly):
-

pin B8 of modulator (D954)

-

Modulator output is switched off

-

Selector valve Y15 (close clutch slowly)
takes over function

-

Extended shifting times

-

Reduced comfort during clutching

-

No automatic mode available

Short circuit to supply of selector valve Y14 (close
clutch rapidly):
-

pin B8 of modulator (D954)

-

No more gear changes possible, system not
available

-

When driving, the required clutch position is
controlled by selector valves (clutch open)

-

At standstill the gearbox is automatically
shifted to the neutral position after a few
seconds

3022

Short circuit to earth or interruption of power
supply to internal speed sensor (F705) or
actuating unit (D955):
-

pin B18 of modulator (D954)

-

pin A11 of modulator (D954)

-

No more gear changes possible

-

If the vehicle comes to a halt, the clutch is
automatically opened

-

Gearbox shifts automatically to the neutral
position

-

System not available

Short circuit to supply of internal speed sensor
(F705) or actuating unit (D955):
-

pin B18 of modulator (D954)

-

pin A11 of modulator (D954)

-

Fault is recognised during self-test when
switching ignition off/on

-

No noticeable system limitation

-

Automatic mode remains available

Fault code

Fault code description with possible cause

Symptom

AS TRONIC

1-8

©

200438

AS Tronic fault codes

3

DAVIE XD diagnostics manual

3026

Engine configuration not recognised via message
on CAN network due to:
-

communication problem with UPEC ECU

-

Automatic mode remains available, but
reduced shifting characteristics are possible

-

Downshift speed may be too low, which
results in reduced shifting comfort

-

Reduced comfort during declutching

3027

Incorrect or missing engine configuration signal
via message on CAN network

-

Automatic mode remains available, but
reduced shifting characteristics are possible

-

Downshift speed may be too low, which
results in reduced shifting comfort

-

Reduced comfort during declutching

3033

Engine brake configuration signal not recognised
via message on CAN network due to:
-

communication problem with UPEC ECU

-

No noticeable system limitation

-

Automatic mode available

3059

Incorrect PTO 1 status signal via message on
CAN network, in the following situation:
-

PTO 1 status signal active

-

no request (PTO switch) for PTO 1

-

no actuation (VIC ECU) of PTO 1

-

With a PTO 1 request the PTO 1 output of
the VIC ECU is actuated normally

-

No noticeable system limitation

-

Automatic mode available

3060

Incorrect PTO 2 status signal via message on
CAN network, in the following situation:
-

PTO 2 status signal active

-

no request (PTO switch) for PTO 2

-

no actuation (VIC ECU) of PTO 2

-

With a PTO 2 request the PTO 2 output of
the VIC ECU is actuated normally

-

No noticeable system limitation

-

Automatic mode available

3061

Incorrect PTO 1 status signal via message on
CAN network, in the following situation:
-

PTO 1 status signal active

-

request (PTO switch) for disengaging PTO 1
is present

When driving:
-

no more gear changes possible

-

automatic mode not available

At standstill:
-

If the vehicle comes to a halt, the clutch is
automatically opened

-

at standstill the gearbox is automatically
shifted to the neutral position

-

no more gear changes possible

-

system not available

3062

Incorrect PTO 2 status signal via message on
CAN network, in the following situation:
-

PTO 2 status signal active

-

request (PTO switch) for disengaging PTO 2
is present

When driving:
-

no more gear changes possible

-

automatic mode not available

At standstill:
-

If the vehicle comes to a halt, the clutch is
automatically opened

-

at standstill the gearbox is automatically
shifted to the neutral position

-

no more gear changes possible

-

system not available

3063

Missing PTO 1 status signal via message on CAN
network, in the following situation:
-

request (PTO switch) for PTO 1 is present

-

actuation of PTO 1 solenoid valve via VIC
ECU

-

Actuation of PTO 1 is discontinued

-

PTO 1 is not available

-

No noticeable system limitation

-

Automatic mode available

3064

Missing PTO 2 status signal via message on CAN
network, in the following situation:
-

request (PTO switch) for PTO 2 is present

-

actuation of PTO 2 solenoid valve via VIC
ECU

-

Actuation of PTO 2 is discontinued

-

PTO 2 not available

-

No noticeable system limitation

-

Automatic mode available

Fault code

Fault code description with possible cause

Symptom