DAF 95XF. Manual — part 202

©

200438

1-5

EBS-2 fault codes

EBS-2

DAVIE XD diagnostics manual

12

21-48

Minimum value of wheel speed sensor signal
from wheel speed sensor (F513) on pins C4 and
C5 of the EBS unit is too low due to:
-

too large an air gap between wheel speed
sensor ring and wheel speed sensor

-

contact resistance on pin C4 and/or C5 of
the EBS unit

-

ABS on front axle, right deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

22-37

Interruption on pin D7 and/or D8 of the EBS unit,
wheel speed sensor (F512)

-

ABS on front axle, left deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

22-38

Unacceptable wheel speed sensor frequency
signal from wheel speed sensor (F512) on pins
D7 and D8 of the EBS unit due to:
-

loose pole ring

-

wrong assessment by EBS unit

-

ABS on front and rear axles deactivated

-

ASR brake/engine control deactivated

-

EBS pressure control on front axle, rear axle
and drawn vehicle deactivated

-

VSC system deactivated

22-41

Short circuit to earth on pin D7 and/or D8 of the
EBS unit, wheel speed sensor (F512)

-

ABS on front axle, left deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

22-42

Short circuit to supply on pin D7 and/or D8 of the
EBS unit, wheel speed sensor (F512)

-

ABS on front axle, left deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

22-44

Short circuit on pin D7 and/or D8 of the EBS unit,
wheel speed sensor (F512)

-

ABS on front axle, left deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

22-45

Incorrect wheel speed sensor sine-wave signal
from wheel speed sensor (F512) on pins D7 and
D8 of the EBS unit due to:
-

distorted wheel speed sensor ring

-

damaged wheel speed sensor ring

-

ABS on front axle, left deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

22-46

No uniformity (frequency changes) of wheel
speed sensor signal from wheel speed sensor
(F512) on pins D7 and D8 of the EBS unit due to:
-

heavy point due to brake disc wobble, for
example

-

ABS on front axle, left deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

22-47

Excessive oscillation of wheel speed sensor
signal (maximum/minimum level) from wheel
speed sensor (F512) on pins D7 and D8 of the
EBS unit due to:
-

excessive wheel bearing play

-

incorrect mounting of wheel speed sensor
ring

-

ABS on front axle, left deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

22-48

Minimum value of wheel speed sensor signal
from wheel speed sensor (F512) on pins D7 and
D8 of the EBS unit is too low due to:
-

too large an air gap between wheel speed
sensor ring and wheel speed sensor

-

contact resistance on pin D7 and/or D8 of
the EBS unit

-

ABS on front axle, left deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

23-37

Interruption on pin B1 and/or B2 of the rear axle
modulator (D879), wheel speed sensor (F515)

-

ABS on rear axle, right deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

Fault code

Fault code description with possible cause

Symptom

EBS-2

1-6

©

200438

EBS-2 fault codes

12

DAVIE XD diagnostics manual

23-38

Unacceptable wheel speed measured via the
wheel speed sensor (F515)

-

ABS on rear axle, right deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

23-41

Short circuit to earth on pin B1 and/or B2 of the
rear axle modulator (D879), wheel speed sensor
(F515)

-

ABS on rear axle, right deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

23-42

Short circuit to supply on pin B1 and/or B2 of the
rear axle modulator (D879), wheel speed sensor
(F515)

-

ABS on rear axle, right deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

23-44

Short circuit between pins B1 and B2 of the rear
axle modulator (D879), wheel speed sensor
(F515)

-

ABS on rear axle, right deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

23-45

Incorrect wheel speed sensor sine-wave signal
from wheel speed sensor (F515) on pins B1 and
B2 of the rear axle modulator (D978) due to:
-

distorted wheel speed sensor ring

-

damaged wheel speed sensor ring

-

ABS on rear axle, right deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

23-46

No uniformity (frequency changes) of wheel
speed sensor signal from wheel speed sensor
(F515) on pins B1 and B2 of the rear axle
modulator (D978) due to:
-

excessive wheel bearing play

-

incorrect mounting of wheel speed sensor
ring

-

ABS on rear axle, right deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

23-47

Excessive oscillation of wheel speed sensor
signal (maximum/minimum level) from wheel
speed sensor (F515) on pins B1 and B2 of the
rear axle modulator (D978) due to:
-

excessive wheel bearing play

-

incorrect mounting of wheel speed sensor
ring

-

ABS on rear axle, right deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

23-48

Minimum value of wheel speed sensor signal
from wheel speed sensor (F515) on pins B1 and
B2 of the rear axle modulator (D978) is too low
due to:
-

too large an air gap between wheel speed
sensor ring and wheel speed sensor

-

contact resistance on pin B1 and/or B2 of
the rear axle modulator

-

ABS on rear axle, right deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

24-37

Interruption on pins C1 and C2 of the rear axle
modulator (D978), wheel speed sensor (F514)

-

ABS on rear axle, left deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

24-38

Unacceptable wheel speed measured via the
wheel speed sensor (F514)

-

ABS on rear axle, left deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

24-41

Short circuit to earth on pins C1 and C2 of the rear
axle modulator (D978), wheel speed sensor
(F514)

-

ABS on rear axle, left deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

24-42

Short circuit to supply on pins C1 and C2 of the
rear axle modulator (D978), wheel speed sensor
(F514)

-

ABS on rear axle, left deactivated

-

ASR brake/engine control deactivated

Fault code

Fault code description with possible cause

Symptom

©

200438

1-7

EBS-2 fault codes

EBS-2

DAVIE XD diagnostics manual

12

24-44

Short circuit between pins C1 and C2 of the rear
axle modulator (D978), wheel speed sensor
(F514)

-

ABS on rear axle, left deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

24-45

Incorrect wheel speed sensor sine-wave signal
from wheel speed sensor (F514) on pins C1 and
C2 of the rear axle modulator (D978) due to:
-

distorted wheel speed sensor ring

-

damaged wheel speed sensor ring

-

ABS on rear axle, left deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

24-46

No uniformity (frequency changes) of wheel
speed sensor signal from wheel speed sensor
(F514) on pins C1 and C2 of the rear axle
modulator (D978) due to:
-

excessive wheel bearing play

-

incorrect mounting of wheel speed sensor
ring

-

ABS on rear axle, left deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

24-47

Excessive oscillation of wheel speed sensor
signal (maximum/minimum level) from wheel
speed sensor (F514) on pins C1 and C2 of the
rear axle modulator (D978) due to:
-

excessive wheel bearing play

-

incorrect mounting of wheel speed sensor
ring

-

ABS on rear axle, left deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

24-48

Minimum value of wheel speed sensor signal
from wheel speed sensor (F514) on pins C1 and
C2 of the rear axle modulator (D978) is too low
due to:
-

too large an air gap between wheel speed
sensor ring and wheel speed sensor

-

contact resistance on pin C1 and/or C2 of
the rear axle modulator

-

ABS on rear axle, left deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

31-16

Large deviation between the duty cycle signals
from the foot brake valve (F628) on pins E2 and
E5 of the EBS unit due to:
-

internal fault in foot brake valve

-

ABS on front and rear axles deactivated

-

ASR brake/engine control deactivated

-

EBS pressure control on front axle, rear axle
and drawn vehicle deactivated

-

VSC system deactivated

-

Low voltage on connection point A9 inside
EBS unit

31-52

Large deviation between the duty cycle signals
from the foot brake valve (F628) on pins E2 and
E5 of the EBS unit due to:
-

internal fault in foot brake valve

-

No noticeable system limitation in EBS

32-37

No signal from brake pedal position switch 1 in
foot brake valve (F628) on pin E3 of the EBS unit
due to:
-

defective switch in foot brake valve

-

interruption on pin E3 of the EBS unit

-

No noticeable system limitation in EBS

32-41

Brake pedal position switch 1 remains closed in
foot brake valve (F628) or short circuit to earth on
pin E3 of the EBS unit

-

The actuating pressure control is active
when the brake pedal is not applied; after a
specified time (approx. 1 min.) the actuating
pressure control will automatically
disengage.

Fault code

Fault code description with possible cause

Symptom

EBS-2

1-8

©

200438

EBS-2 fault codes

12

DAVIE XD diagnostics manual

33-37

No signal from brake pedal position switch 2 in
foot brake valve (F628) on pin E6 of the EBS unit
due to:
-

defective switch

-

interruption on pin E6 of the EBS unit

-

short circuit to supply on pin E6 of the EBS
unit

-

No noticeable system limitation in EBS

33-41

Brake pedal position switch 2 remains closed in
foot brake valve (F628) or short circuit to earth on
pin E6 of the EBS unit

-

The actuating pressure control is active
when the brake pedal is not applied; after a
specified time (approx. 1 min.) the actuating
pressure control will automatically
disengage.

34-41

Lower signal level from brake pedal position
sensor 1 in foot brake valve (F628) on pin E2 of
the EBS unit is too low during a specified period
of time due to:
-

contact resistance on pin E2 of the EBS unit

-

internal fault in foot brake valve

-

short circuit to earth on pin E2 of the EBS
unit

-

No noticeable system limitation in EBS

34-43

Upper signal level from brake pedal position
sensor 1 in foot brake valve (F628) on pin E2 of
the EBS unit is too high during a specified time or
the pulse width of the signal is incorrect due to:
-

short circuit to supply on pin E2 of the EBS
unit

-

internal fault in foot brake valve

-

interruption on pin E1 of the EBS unit

-

interruption on connection point E2

-

No noticeable system limitation in EBS

35-41

Lower signal level from brake pedal position
sensor 2 in foot brake valve (F628) on pin E5 of
the EBS unit is too low during a specified period
of time due to:
-

contact resistance on pin E5 of the EBS unit

-

internal fault in foot brake valve

-

short circuit to earth on pin E5 of the EBS
unit

-

No noticeable system limitation in EBS

35-43

Upper signal level from brake pedal position
sensor 2 in foot brake valve (F628) on pin E5 of
the EBS unit is too high during a specified time or
the pulse width of the signal is incorrect due to:
-

short circuit to supply on pin E5 of the EBS
unit

-

internal fault in foot brake valve

-

interruption on pin E4 of the EBS unit

-

interruption on pin E5 of the EBS unit

-

No noticeable system limitation in EBS

41-39

No CAN message "TCO1" received from the
tachograph in relation to the vehicle speed

No CAN message "CCVS" received from the
engine management system with regard to the
parking brake switch, clutch pedal switch or
vehicle speed related to the wheel speed

-

No noticeable system limitation in EBS

Fault code

Fault code description with possible cause

Symptom