DAF 95XF. Manual — part 169

©

200438

1-1

AS Tronic fault codes

AS TRONIC

DAVIE XD diagnostics manual

3

1. AS TRONIC FAULT CODES

1.1 INTRODUCTION

If the electronic unit detects a system fault, this

fault is usually stored in the memory of the

electronic unit as a fault code.

Most system faults will also generate a warning.

AS TRONIC

1-2

©

200438

AS Tronic fault codes

3

DAVIE XD diagnostics manual

1.2 EXPLANATORY NOTES TO AS TRONIC FAULT CODES

Fault code

Fault code description with possible cause

Symptom

84

Incorrect or missing vehicle speed signal via
message on CAN network

-

In automatic mode the gearbox may shift
down early or late

-

No further system limitation

-

Automatic mode available

86

Incorrect or missing cruise control signal via
message on CAN network, with the cruise control
function being active

-

In automatic mode the gearbox may change
gears accidentally during the cruise control
function

-

No noticeable system limitation

91

Incorrect or missing accelerator pedal position
signal via message on CAN network

When driving:
-

shifting quality may be affected

-

automatic mode not available

At standstill:
-

driving off from a stationary position is
possible

-

drive off and manoeuvring quality may be
affected

92

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

-

No noticeable system limitation

-

Automatic mode available

158

Excessive modulator supply voltage:
-

pin A4 / A5

When driving:
-

no noticeable system limitation

-

automatic mode available

At standstill:
-

if this fault is present before switching on the
ignition, the gearbox will not leave the self-
test cycle. It is not possible to drive off.

Insufficient modulator supply voltage:
-

pin A4 / A5

When driving:
-

no gear changes possible

At standstill:
-

automatic mode not available

-

no gear changes possible

-

if a gear has been engaged, the modulator
will shift the gearbox to neutral when the
ignition is switched off

190

Incorrect or missing engine speed signal via
message on CAN network

When driving:
-

clutch is closed in a time-controlled fashion,
which results in abrupt clutching

-

automatic mode not available

At standstill:
-

when driving off in the manoeuvring position,
the clutch is operated in a time-controlled
fashion, which results in abrupt clutching

©

200438

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

©

200438

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