DAF 95XF. Manual — part 204

©

200438

1-13

EBS-2 fault codes

EBS-2

DAVIE XD diagnostics manual

12

62-43

With a nonactivated front axle modulator, the
front axle modulator (B307) pressure sensor
output signal on pin D6 of the EBS unit is too low
or too high due to:
-

defective pressure sensor

-

no supply voltage or supply voltage too low
on pin D9 of the EBS unit

-

interruption on pin D6 of the EBS unit

-

short circuit to earth on pin D6 of the EBS
unit

-

air pressure at connection point 4 of the front
axle modulator (B307) if the foot brake valve
(F628) is not activated

-

Open circuit in EBS pressure control, front
axle

-

VSC system deactivated

63-25

Permanent actuation of the front axle modulator
(B307) due to:
-

short circuit to supply on one side and short
circuit to earth on the other side

-

Brake remains applied to front axle

-

VSC system deactivated

63-32

Short circuit to earth on pin D1 of the EBS unit,
front axle modulator (B307)

-

EBS pressure control on front axle
deactivated

-

VSC system deactivated

63-33

Short circuit to supply on pin D1 of the EBS unit,
front axle modulator (B307)

-

EBS pressure control on front axle
deactivated

-

VSC system deactivated

63-34

Short circuit to earth on pin D2 of the EBS unit,
front axle modulator (B307)

-

EBS pressure control on front axle
deactivated

-

VSC system deactivated

63-35

Short circuit to supply on pin D2 of the EBS unit,
front axle modulator (B307)

-

EBS pressure control on front axle
deactivated

-

VSC system deactivated

63-36

Interruption on pin D1 and/or D2 of the EBS unit,
front axle modulator (B307)

-

EBS pressure control on front axle
deactivated

-

VSC system deactivated

64-13

The ECU parameters for the rear axle modulator
type do not correspond with the parameters in the
rear axle modulator (D978)

-

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

64-14

The EBS unit detects a fault in the CAN message
from the rear axle modulator (D978)

-

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

64-16

Fault in the solenoid valves of the rear axle
modulator (D978)

-

ABS on front and rear axles deactivated

-

ASR brake/engine control deactivated

-

EBS pressure control on rear axle
deactivated

-

VSC system deactivated

64-51

Output pressure of the rear axle modulator
(D978) is too high

-

ABS on rear axle deactivated

-

VSC system deactivated

Fault code

Fault code description with possible cause

Symptom

EBS-2

1-14

©

200438

EBS-2 fault codes

12

DAVIE XD diagnostics manual

64-52

Brake pressure signal difference between both
pressure sensors in rear axle modulator (D978) is
too high

-

ABS on front and rear axles deactivated

-

ASR brake/engine control deactivated

-

EBS pressure control on rear axle
deactivated

-

VSC system deactivated

64-54

No pressure sensor signal in rear axle modulator
(D978) or signal is incorrect (too high/too low)

-

ABS on front and rear axles deactivated

-

ASR brake/engine control deactivated

-

Open circuit in EBS pressure control, rear
axle

-

VSC system deactivated

64-64

CAN communication problem of the EBS unit with
the rear axle modulator (D879) via pins B1 and
B4 of the EBS unit

-

ABS on front and rear axles deactivated

-

ASR brake/engine control deactivated

-

EBS pressure control on rear axle
deactivated

-

VSC system deactivated

Supply voltage on pin B7 of the EBS unit
interrupted

-

ABS on front and rear axles deactivated

-

ASR brake/engine control deactivated

-

EBS pressure control on rear axle
deactivated

-

VSC system deactivated

-

With an interruption on pin B7, connection
points A9 and E4 inside the ECU will have a
low voltage, causing brake pedal position
sensor 2 to give no output signal, for
instance. If the measurement is performed
at B7, it will also turn out that B7 in this
situation will be internally connected to earth
in the ECU

Interrupted earth connection or contact
resistance in the earth connection of the rear axle
modulator (D978)

-

ABS on front and rear axles deactivated

-

ASR brake/engine control deactivated

-

EBS pressure control on rear axle
deactivated

-

VSC system deactivated

64-77

The rear axle modulator (D978) has not received
a CAN message from the VSC module within a
specified period of time

-

VSC system deactivated

64-83

The EBS unit establishes that the rear axle
modulator (D978) has not sent the correct check
message during a check phase

-

ABS on front and rear axles deactivated

-

ASR brake/engine control deactivated

-

EBS pressure control on rear axle
deactivated

-

VSC system deactivated

66-12

Incorrect drawn vehicle control valve (B308)
parameters due to:
-

drawn vehicle control valve connected to the
EBS unit without the EBS unit having been
programmed for a drawn vehicle control
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

66-16

The current measured by the drawn vehicle
control valve (B308) magnet coil via pins B10 and
B11 of the ECU is incorrect due to:
-

copper short circuit in the magnet coil

-

short circuit or contact resistance between
pins B10 and B11 of the EBS unit

-

EBS pressure control on drawn vehicle
deactivated

-

VSC system deactivated

Fault code

Fault code description with possible cause

Symptom

©

200438

1-15

EBS-2 fault codes

EBS-2

DAVIE XD diagnostics manual

12

66-55

Drawn vehicle control valve (B308) output
pressure measured on pin B14 of the EBS unit is
incorrect in relation to the current through the
magnet coil due to:
-

defective pressure sensor

-

too low a supply pressure

-

EBS pressure control on drawn vehicle
deactivated

-

VSC system deactivated

67-42

Pressure sensor fault in drawn vehicle control
valve (B308) due to:
-

short circuit to supply on pin B14 of the EBS
unit

-

interruption on pin D3 of the EBS unit

-

short circuit to supply on pin D3 of the EBS
unit

-

Open circuit in EBS pressure control, drawn
vehicle

-

VSC system deactivated

67-43

With a nonactivated drawn vehicle control valve,
drawn vehicle control valve (B308) pressure
sensor output signal on pin B14 of the EBS unit is
too low or too high due to:
-

defective pressure sensor

-

no or too low a supply voltage to pressure
sensor

-

Open circuit in EBS pressure control, drawn
vehicle

-

VSC system deactivated

67-51

With a non-activated drawn vehicle control valve
and a speed >30 km/hour, drawn vehicle control
valve (B308) pressure sensor output signal on pin
B14 of the EBS unit is too low or too high due to:
-

defective pressure sensor

-

Open circuit in EBS pressure control, drawn
vehicle

-

VSC system deactivated

68-25

Permanent actuation of the drawn vehicle control
valve (B308) due to:
-

short circuit to supply on one side and short
circuit to earth on the other side

-

Brake remains applied to drawn vehicle

-

VSC system deactivated

68-32

Short circuit to earth on pin B10 of the EBS unit,
drawn vehicle control valve (B308)

-

EBS pressure control on drawn vehicle
deactivated

-

VSC system deactivated

68-33

Short circuit to supply on pin B10 of the EBS unit,
drawn vehicle control valve (B308)

-

EBS pressure control on drawn vehicle
deactivated

-

VSC system deactivated

68-34

Short circuit to earth on pin B11 of the EBS unit,
drawn vehicle control valve (B308)

-

EBS pressure control on drawn vehicle
deactivated

-

VSC system deactivated

68-35

Short circuit to supply on pin B11 of the EBS unit,
drawn vehicle control valve (B308)

-

EBS pressure control on drawn vehicle
deactivated

-

VSC system deactivated

68-36

Interruption on pin B10 and/or B11 of the EBS
unit, drawn vehicle control valve (B308)

-

EBS pressure control on drawn vehicle
deactivated

-

VSC system deactivated

73-15

If a drawn vehicle with EBS sends a CAN
message to the ECU of the prime mover,
indicating that the "serious drawn vehicle failure"
needs to be activated on DIP, this fault code will
be stored in the prime mover ECU.

74-11

Internal fault in the VSC module (F702)

-

VSC system deactivated

74-12

Incorrect parameters of the VSC module (F702)

-

VSC system deactivated

Fault code

Fault code description with possible cause

Symptom

EBS-2

1-16

©

200438

EBS-2 fault codes

12

DAVIE XD diagnostics manual

74-13

Incorrect software version in the VSC module
(F702) or rear axle modulator (D978) for the VSC
control

-

VSC system deactivated

74-14

The EBS unit detects a fault in the CAN message
from the VSC module (F702)

-

VSC system deactivated

74-15

Internal fault in the VSC module (F702)

-

VSC system deactivated

74-16

Sensor fault in the VSC module (F702)

-

VSC system deactivated

74-18

Insufficient supply voltage on VSC module (F702)
due to:
-

contact resistance or poor connection

-

VSC system deactivated

74-49

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

incorrect mechanical adjustment of steering
gear

-

damaged/defective steering angle sensor

-

VSC system deactivated

74-64

CAN communication problem of the EBS unit with
the VSC module (F702) via pins B2 and B5 due
to:
-

short circuit between pin B2 and pin B5 of
the EBS unit

-

VSC system deactivated

74-77

The EBS unit has not received a CAN message
from the VSC module (F702) and steering angle
sensor (F701) within a specified period of time
due to:
-

interruption on pin B2 and/or B5 of the EBS
unit

-

short circuit to earth on pin B5 of the EBS
unit

-

short circuit to supply on pin B2 and/or pin
B5 of the EBS unit

-

VSC system deactivated

74-81

Sensor information from VSC module (F702)
does not correspond with the steering
performance of the vehicle due to:
-

wrong installation of VSC module

-

VSC system deactivated

74-82

The VSC calibration is still active

-

VSC system deactivated

74-83

The EBS unit establishes that the VSC module
(F702) has not sent the correct check message
during a check phase

-

VSC system deactivated

74-85

Bar codes in EBS unit and VSC module (F702) do
not correspond due to:
-

delay in calibration after replacement of the
EBS ECU and/or VSC module and/or
modification of parameter setting

-

VSC system deactivated

75-12

EBS unit receives CAN messages from the
steering angle sensor (F701), with the EBS unit
having been programmed in such a way that
there is no VSC system fitted in the vehicle

-

VSC system deactivated

75-13

The software version of the steering angle sensor
(F701) is not detected/accepted by the EBS unit

-

VSC system deactivated

75-14

The EBS unit detects a fault in the CAN message
from the steering angle sensor (F701)

-

VSC system deactivated

Fault code

Fault code description with possible cause

Symptom