DAF CF65, CF75, CF85 Series . Manual - part 17

 

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DAF CF65, CF75, CF85 Series . Manual - part 17

 

 

©

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

©

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

©

1-9

AS Tronic fault codes

AS TRONIC

DAVIE XD diagnostics manual 

3

3090

Internal modulator fault (D954) due to:
-

communication problem between internal 
processors of modulator (D954)

-

basic software 1 and 2 of modulator (D954) 
has been corrupted

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

3091

Incorrect or missing ABS/EBS signal via 
message on CAN network due to: 
-

communication problem with ABS/EBS

-

Automatic mode not available

-

No noticeable system limitation

3098

Incorrect or missing speed signal from the 
gearbox input shaft (measured by the integrated 
speed sensor in the modulator (D954)) due to:
-

defective integrated speed sensor in the 
modulator

-

incorrect mechanical operation of the 
transmission brake clutch

When driving:
-

extended shifting times

-

reduced shifting comfort when changing 
gears; when shifting up and down, the clutch 
in neutral position will be partially closed to 
adjust the speed of the input shaft to that of 
the engine

-

with engaged gear the input shaft speed 
signal is replaced with the output shaft 
speed signal

-

automatic mode not available

At standstill:
-

extended shifting time when engaging a 
gear

-

reduced clutch comfort when closing the 
clutch

3099

Incorrect or missing output shaft speed signal 
(measured by the internal speed sensor (F705)) 
due to:
-

defective internal speed sensor (F705)

-

Internal speed signal is replaced with the 
vehicle speed signal from the MTCO sensor 
(F533)

-

No noticeable system limitation

-

Automatic mode available

3101

Incorrect or missing input shaft speed signal and 
incorrect or missing output shaft speed signal due 
to:
-

defective integrated speed sensor in the 
modulator

-

incorrect mechanical operation of the 
transmission brake clutch

-

defective internal speed sensor (F705)

-

defective modulator (D954)

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

3102

The ratio between the speed signal of the input 
shaft and that of the output shaft is not acceptable 
in relation to the engaged gear ratio.

When driving:
-

no more gear changes possible; the gearbox 
tries to automatically shift to the neutral 
position

-

automatic mode not available

At standstill:
-

driving off from a stationary position in 
automatically selected drive-off gears is 
possible

Fault code

Fault code description with possible cause

Symptom

AS TRONIC

1-10

©

AS Tronic fault codes

3

DAVIE XD diagnostics manual

3107

Incorrect or missing supply voltage of the clutch 
travel sensor in the clutch unit:
-

pin B15 of the clutch unit (B385)

When driving:
-

reduced clutch comfort when opening and 
closing the clutch; this is done in a time-
controlled fashion

-

automatic mode not available

At standstill:
-

shunting is not possible

-

if driving off from a stationary position does 
not take place within a certain period of time, 
the gearbox will be automatically shifted to 
the neutral position. The drive-off gear must 
then be selected manually.

-

reduced clutch comfort when closing the 
clutch

3108

Internal fault in actuating unit (D955) due to:
-

unacceptable gear lever position sensor 
signals in relation to each other

-

defective selector switch (E590)

When driving:
-

no gear changes possible

-

automatic mode not available

At standstill:
-

when driving off, the drive-off gear will be 
selected in accordance with the position of 
the selector switch, both forward and 
reverse

-

after the ignition has been switched off, the 
gearbox will be shifted to the neutral position

-

the system will not be available when the 
ignition is switched on

3110

Incorrect or missing internal CAN signal due to: 
-

communication problem with internal CAN 
system

-

internal short circuit on pin C1 or C3 of 
actuating unit (D955)

-

internal short circuit on pin A3 or A6 of 
modulator (D954)

When switching on the ignition:
-

fault is recognised during self-test

-

system is not available

When driving:
-

no gear changes possible

-

automatic mode not available

At standstill:
-

if the vehicle comes to a halt, the last 
selected drive-off gear is engaged; it is only 
possible to drive in this gear. If reverse was 
the last selected drive-off gear, the gearbox 
is automatically shifted to the neutral 
position.

3111

No recognition of "realtime" signal (time/date) via 
message on CAN network due to:
-

communication problem with UPEC ECU

-

No noticeable system limitation

-

Automatic mode available

-

3112

Incorrect or missing "realtime" signal (time/date) 
via message on CAN network (this signal is used 
to calculate the clutch load):
-

clutch load can no longer be checked

-

No noticeable system limitation

-

Automatic mode available

-

3113

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

communication problem with EST 42 ECU

-

incorrect programming of AS Tronic basic 
software 

-

No noticeable system limitation

-

Automatic mode not available

Fault code

Fault code description with possible cause

Symptom

 

 

 

 

 

 

 

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