DAF LF45, LF55 Series. Manual — part 48

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1-3

EBS-2 fault codes

EBS-2

DAVIE XD diagnostics manual

12

13-18

Voltage on pin A7 of the EBS unit is too low due
to:
-

contact resistance or poor connection to pin
A7 of the EBS unit

-

interruption on pin A7 of the EBS unit

-

No noticeable system limitation in EBS

14-32

Sensor supply voltage on pins D9, B13 or E1 of
the EBS unit due is too low due to:
-

contact resistance or poor connection on
specified connection points of the EBS unit

-

short circuit to earth on specified connection
points of the EBS unit

-

VSC system deactivated

14-33

Constant voltage, even if the ignition is turned off
and the brake is not applied, on pin D9, B13 or E1
of the EBS unit due to:
-

short circuit to supply on specified
connection points of the EBS unit

-

VSC system deactivated

15-33

Constant voltage, even if the ignition is turned off
and the brake is not applied, on pin B7 of the EBS
unit due to:
-

short circuit to supply on pin B7 of the EBS
unit

-

No noticeable system limitation in EBS

16-11

Internal fault in 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

16-12

Configuration parameters in the EBS unit
incorrect due to:
-

incorrect programming

-

retrofitted components without identification
card (oxford) change

-

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

16-15

Internal fault in 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

16-17

Voltage (>32 V) on pins A7, A8 and A9 of the EBS
unit is too high due to:
-

excessive alternator/battery voltage

-

inductive voltage of external component

-

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

16-18

Voltage on pins A7, A8 and A9 of the EBS unit at
a speed of >2 km/h is too low due to:
-

insufficient battery voltage

-

poor earth connection to 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

16-49

Unacceptable information from steering angle
sensor (F701) due to:
-

incorrect mechanical adjustment of straight-
ahead position of steering gear

-

VSC system deactivated

Fault code

Fault code description with possible cause

Symptom

EBS-2

1-4

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EBS-2 fault codes

12

DAVIE XD diagnostics manual

16-53

The difference in peripheral speed between the
left and right wheel on the same axle exceeds
10%

-

ABS on front and rear axles deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

17-32

Voltage on pin B15 of the EBS unit at least 2.5 V
lower than the voltage on pin A8 of the EBS unit
due to:
-

short circuit to earth on pin B15 of the EBS
unit

-

VSC system deactivated

17-33

When the ignition is switched on, voltage is
already supplied to pin B15 of the EBS unit due
to:
-

short circuit to supply on pin B15 of the EBS
unit

-

VSC system deactivated

21-37

Interruption on pin C4 and/or C5 of the EBS unit,
wheel speed sensor (F513)

-

ABS on front axle, right deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

21-38

Unacceptable wheel speed sensor frequency
signal from wheel speed sensor (F513) on pins
C4 and C5 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

21-41

Short circuit to earth on pin C4 and/or C5 of the
EBS unit, wheel speed sensor (F513)

-

ABS on front axle, right deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

21-42

Short circuit to supply on pin C4 and/or C5 of the
EBS unit, wheel speed sensor (F513)

-

ABS on front axle, right deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

21-44

Short circuit on pin C4 and/or C5 of the EBS unit,
wheel speed sensor (F513)

-

ABS on front axle, right deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

21-45

Incorrect wheel speed sensor sine-wave signal
from wheel speed sensor (F513) on pins C4 and
C5 of the EBS unit due to:
-

distorted wheel speed sensor ring

-

damaged wheel speed sensor ring

-

ABS on front axle, right deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

21-46

No uniformity (frequency changes) of wheel
speed sensor signal from wheel speed sensor
(F513) on pins C4 and C5 of the EBS unit due to:
-

heavy point due to brake disc wobble, for
example

-

ABS on front axle, right deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

21-47

Excessive oscillation of wheel speed sensor
signal (maximum/minimum level) from wheel
speed sensor (F513) on pins C4 and C5 of the
EBS unit due to:
-

excessive wheel bearing play

-

incorrect mounting of wheel speed sensor
ring

-

ABS on front axle, right deactivated

-

ASR brake/engine control deactivated

-

VSC system deactivated

Fault code

Fault code description with possible cause

Symptom

©

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

©

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