DAF CF65, CF75, CF85 Series . Manual — part 5
©
1-7
EBS fault codes
EBS
DAVIE XD diagnostics manual
1
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
-
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
-
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.
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 in foot brake valve
-
interruption 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 of the
EBS unit
-
No noticeable system limitation in EBS
Fault code
Fault code description with possible cause
Symptom
EBS
1-8
©
EBS fault codes
1
DAVIE XD diagnostics manual
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
41-61
Communication via V-CAN on pins A1 and A3 of
the EBS unit not possible when switching on
ignition due to:
-
interruption on pin A1 of the EBS unit
-
short circuit to earth on pin A3 of the EBS
unit
-
short circuit to supply on pin A1 and/or A3 of
the EBS unit
-
ASR brake/engine control deactivated
41-63
Interrupted communication via V-CAN on pins A1
and A3 of the EBS unit due to:
-
interruption on pin A1 and/or A3 of the EBS
unit
-
short circuit to earth on pin A3 of the EBS
unit
-
short circuit to supply on pin A1 and/or A3 of
the EBS unit
-
ASR brake/engine control deactivated
41-65
No CAN message "ERC1" received within a
specified period of time from the engine
management system in relation to the engine
braking torque
-
No noticeable system limitation in EBS
41-66
No CAN message "EEC1" received within a
specified period of time from the engine
management system in relation to the engine
torque and engine speed
-
No noticeable system limitation in EBS
41-67
No CAN message "ETC1" received within a
specified period of time from the gearbox
(AS Tronic) if the drive line is activated
-
No noticeable system limitation in EBS
41-68
No CAN message "CCVS" received within a
specified period of time from the engine
management system in relation to the parking
brake status, vehicle speed and clutch status
-
No noticeable system limitation in EBS
Fault code
Fault code description with possible cause
Symptom
©
1-9
EBS fault codes
EBS
DAVIE XD diagnostics manual
1
41-69
No CAN message "TCO1" received within a
specified period of time from the tachograph in
relation to the vehicle speed due to:
-
communication problem with the tachograph
(MTCO)
-
K-factor in MTCO incorrect or not there
-
delayed loss of supply voltage on EBS unit
when switching off ignition (this is a common
production situation but it has been solved in
subsequent production versions by the
addition of relay G426)
-
No noticeable system limitation in EBS
41-71
No CAN message received from VIC within a
specified period of time
-
No noticeable system limitation in EBS
42-16
EBS unit does not receive correct CAN message
from the rear axle modulator (D879) on pins B1
and B4 of the 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
42-61
Interrupted CAN communication with the rear
axle modulator (D879) via pins B1 and B4 of the
EBS unit due to:
-
short circuit to earth on pin B4 of the EBS
unit
-
short circuit to supply on pin B1 and/or pin
B4 of the EBS unit
-
short circuit between pin B1 and pin B4 of
the EBS unit
-
ABS on front and rear axles deactivated
-
ASR brake/engine control deactivated
-
EBS pressure control on rear axle
deactivated
43-61
CAN communication problem with the drawn
vehicle ECU via pins B3 and B6 of the EBS unit
-
No noticeable system limitation in EBS
43-63
Interrupted CAN communication, with a driving
combination, with the drawn vehicle ECU via pins
B3 and B6 of the EBS unit due to:
-
interruption on pins B3 and B6 of the EBS
unit
-
short circuit between pin B3 and pin B6 of
the EBS unit
-
No noticeable system limitation in EBS
43-75
Interrupted CAN communication, with a driving
combination, with the drawn vehicle ECU via pin
B3 (CAN-H) of the EBS unit due to:
-
interruption on pin B3 of the EBS unit
-
short circuit on pin B3 of the EBS unit
-
No noticeable system limitation in EBS
43-76
Interrupted communication, with a driving
combination, with the drawn vehicle ECU via pin
B6 (CAN-L) of the EBS unit due to:
-
interruption on pin B6 of the EBS unit
-
short circuit on pin B6 of the EBS unit
-
No noticeable system limitation in EBS
45-16
Interruption, short circuit to earth or short circuit to
supply on pin A18 of the EBS unit
-
No noticeable system limitation in EBS
51-21
Short circuit to earth on pin D11 of the EBS unit,
ABS valve (B256)
-
ABS on front axle, left deactivated
51-22
Short circuit to supply on pin D11 of the EBS unit,
ABS valve (B256)
-
ABS on front axle deactivated
Fault code
Fault code description with possible cause
Symptom
EBS
1-10
©
EBS fault codes
1
DAVIE XD diagnostics manual
51-23
Interruption on pin D12 of the EBS unit, ABS
valve (B256)
-
ABS on front axle, left deactivated
51-24
Interruption on pin D11 of the EBS unit, ABS
valve (B256)
-
ABS on front axle, left deactivated
51-25
Continuous actuation of ABS valve (B256) via
pins D10 and D12 and/or D11 and D12 of the
EBS unit due to:
-
internal short circuit in EBS unit
-
ABS on front axle deactivated
-
EBS pressure control on front axle and
drawn vehicle deactivated
51-26
Interruption on pin D10 of the EBS unit, ABS
valve (B256)
-
ABS on front axle, left deactivated
51-27
Short circuit to earth on pin D10 of the EBS unit,
ABS valve (B256)
-
ABS on front axle, left deactivated
51-28
Short circuit to supply on pin D10 of the EBS unit,
ABS valve (B256)
-
ABS on front axle deactivated
52-21
Short circuit to earth on pin C2 of the EBS unit,
ABS valve (B257)
-
ABS on front axle, right deactivated
52-22
Short circuit to supply on pin C2 of the EBS unit,
ABS valve (B257)
-
ABS on front axle deactivated
52-23
Interruption on pin C3 of the EBS unit, ABS valve
(B257)
-
ABS on front axle, right deactivated
52-24
Interruption on pin C2 of the EBS unit, ABS valve
(B257)
-
ABS on front axle, right deactivated
52-25
Continuous actuation of ABS valve (B527) via
pins C1 and C3 and/or C2 and C3 of the EBS unit
due to:
-
internal short circuit in EBS unit
-
ABS on front axle deactivated
-
EBS pressure control on front axle and
drawn vehicle deactivated
52-26
Interruption on pin C1 of the EBS unit, ABS valve
(B257)
-
ABS on front axle, right deactivated
52-27
Short circuit to earth on pin C1 of the EBS unit,
ABS valve (B257)
-
ABS on front axle, right deactivated
52-28
Short circuit to supply on pin C1 of the EBS unit,
ABS valve (B256)
-
ABS on front axle deactivated
53-32
Short circuit to earth on pin D12 or C3 of the EBS
unit, ABS valve (B256 or B257)
-
No noticeable system limitation in EBS
53-33
Short circuit to supply on pin D12 or C3 of the
EBS unit, ABS valve (B256 or B257)
-
ABS on front axle deactivated
55-12
Incorrect redundancy valve (B306) parameters
due to:
-
redundancy valve connected to the EBS unit
without the EBS unit having been
programmed for a redundancy 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
55-31
Interruption in redundancy valve (B306),
measured via pin B12 of the EBS unit
-
ABS on front and rear axles deactivated
-
ASR brake/engine control deactivated
-
EBS pressure control on rear axle
deactivated
55-32
Short circuit to earth in redundancy valve (B306),
measured via pin B12 of the EBS unit
-
ABS on front and rear axles deactivated
-
ASR brake/engine control deactivated
-
EBS pressure control on rear axle
deactivated
Fault code
Fault code description with possible cause
Symptom
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