DAF CF65, CF75, CF85 Series . Manual - part 38

 

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DAF CF65, CF75, CF85 Series . Manual - part 38

 

 

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1-3

ECAS-2 fault codes

ECAS-2

DAVIE XD diagnostics manual 

8

20

Short circuit to earth of rear axle height sensor 
(F613), right, on pin 8 or pin 25 of the ECU
-

Height sensor (F613) defective

-

Difference in height level on left and right 
side

-

Driving height is not reached

-

No rear axle chassis height control

21

Short circuit to earth of rear axle height sensor 
(F612), left, on pin 8 or pin 25 of the ECU
-

Height sensor (F612) defective

-

No rear axle chassis height control

-

Driving height is not reached

-

Difference in height level on left and right 
side

22

Short circuit to earth of front axle height sensor 
(F614) on pin 26 of the ECU
-

Height sensor (F614) defective

-

No chassis height control, front axle

26

Interruption or short circuit to earth of driven axle 
pressure sensor
-

Fuse (E062) defective

-

Short circuit to earth on pin 5 or 6 of the 
ECU

-

Interruption on pin 5 or 6 of the ECU

-

Interruption on connection 1 of pressure 
sensor (F615)

-

Interruption of earth connection of pressure 
sensor (F615)

-

No communication with DAVIE

-

ECAS pilot lamp is not activated

27

Interruption or short circuit to earth of driven axle 
pressure sensor
-

Fuse (E062) defective

-

Short circuit to earth on pin 5 or 6 of the 
ECU

-

Interruption on pin 5 or 6 of the ECU

-

Interruption on connection 1 of pressure 
sensor (F615)

-

Interruption of earth connection of pressure 
sensor (F615)

-

No communication with DAVIE

-

No rear axle chassis height control

30

Interruption or short circuit to supply of vented/
bled valve
-

Internal valve failure (B253)

-

Fuse (E051) defective

-

Interruption on pin 1 of the ECU

-

Interruption or short circuit to supply on pin 
15 of the ECU

-

No rear axle chassis height control

-

No chassis height control

-

Driving height is not reached

-

No chassis height control, front axle

31

Interruption or short circuit to supply of driven 
axle ECAS valve, right
-

Internal valve failure (B253)

-

Interruption on pin 1 of the ECU

-

Interruption or short circuit to supply on pin 
13 of the ECU

-

No rear axle chassis height control

-

No chassis height control

-

Driving height is not reached

32

Interruption or short circuit to supply of driven 
axle ECAS valve, right
-

Internal valve failure (B253)

-

Interruption on pin 1 of the ECU

-

Interruption or short circuit to supply on pin 
31 of the ECU

-

No rear axle chassis height control

-

No chassis height control

-

Driving height is not reached

Fault code

Fault code description with possible cause

System response

ECAS-2

1-4

©

ECAS-2 fault codes

8

DAVIE XD diagnostics manual

33

Interruption or short circuit to supply of trailing 
axle ECAS valve (admitting air)
-

Fuse (E051) defective

-

Interruption on pin 1 of the ECU

-

Interruption or short circuit to supply on pin 
12 of the ECU

-

No chassis height control

-

Driving height is not reached

-

Trailing axle cannot lift/lower

-

Leading rear axle cannot lift/lower

34

Interruption or short circuit to supply of trailing 
axle ECAS valve (exhausting air)
-

Fuse (E051) defective

-

Interruption on pin 1 of the ECU

-

Interruption or short circuit to supply on pin 
30 of the ECU

-

Driving height is not reached

-

No chassis height control

-

Leading rear axle cannot lift/lower

-

No chassis height control

-

No rear axle chassis height control

-

Trailing axle cannot lift/lower

35

No fault message

36

Interruption or short circuit to supply of front axle 
ECAS valve (exhausting air)
-

Fuse (E051) defective

-

Interruption or short circuit to supply on pin 
11 of the ECU

-

No chassis height control, front axle

-

Driving height is not reached

-

No chassis height control

-

Front axle chassis height changes with rear 
axle chassis height

37

No fault message

40

Short circuit to earth of vented/bled valve
-

Internal valve failure (B253)

-

Short circuit to earth on pin 15 of the ECU

-

No rear axle chassis height control

-

No chassis height control, front axle

41

Short circuit to earth of driven axle ECAS valve 
(B253), left
-

Internal valve failure (B253)

-

Short circuit to earth on pin 13 of the ECU

-

No rear axle chassis height control

42

Short circuit to earth of driven axle ECAS valve 
(B253), right
-

Internal valve failure (B253)

-

Short circuit to earth on pin 31 of the ECU

-

No rear axle chassis height control

43

Short circuit to earth of trailing axle lifting valve 
(B253)
Short circuit to earth on pin 12 of the ECU

-

Leading rear axle cannot lift/lower

44

Short circuit to earth of trailing axle lowering 
valve (B253)
-

Short circuit to earth on pin 30 of the ECU

-

Leading rear axle cannot lift/lower

45

No fault message

46

Short circuit to earth of front axle ECAS valve 
(B166)
-

Internal valve failure (B253)

-

Short circuit to earth on pin 11 of the ECU

-

No chassis height control, front axle

47

Short circuit to earth of ECAS valve (D802)
-

Internal valve failure (D802)

-

Calibration required

50

Fault message while lifting rear axle, right
-

Mechanical ECAS valve failure (B253)

-

Internal height sensor failure (F613)

-

Mechanical height sensor failure (F613)

-

Interruption of ECAS valve earth 
connection (B253)

-

Interruption on pin 15 of the ECU

-

Only fault message if ECAS is active

-

Difference in height level on left and right 
side

-

Driving height is not reached

-

No rear axle chassis height control

Fault code

Fault code description with possible cause

System response

©

1-5

ECAS-2 fault codes

ECAS-2

DAVIE XD diagnostics manual 

8

51

Fault message while lifting rear axle, left
-

Mechanical ECAS valve failure (B253)

-

Internal height sensor failure (F612)

-

Mechanical height sensor failure (F612)

-

Interruption of ECAS valve earth 
connection (B253)

-

Interruption on pin 15 of the ECU

-

Only fault message if ECAS is active

-

Difference in height level on left and right 
side

-

Driving height is not reached

-

No rear axle chassis height control

52

Fault message while lifting front axle
-

Mechanical front axle ECAS valve failure 
(B166)

-

Internal height sensor failure (F614)

-

Mechanical height sensor failure (F614)

-

Interruption of ECAS valve earth 
connection (B166)

-

Interruption on pin 15 of the ECU

-

No chassis height control, front axle

-

Only fault message if ECAS is active

-

No chassis height control

60

Fault message while lowering rear axle, right
-

Mechanical ECAS valve failure (B253)

-

Internal height sensor failure (F613)

-

Mechanical height sensor failure (F613)

-

Interruption of ECAS valve earth 
connection (B253)

-

Interruption on pin 15 of the ECU

-

Only fault message if ECAS is active

-

Difference in height level on left and right 
side

-

Driving height is not reached

-

No rear axle chassis height control

61

Fault message while lowering rear axle, left
-

Mechanical ECAS valve failure (B253)

-

Internal height sensor failure (F612)

-

Mechanical height sensor failure (F612)

-

Interruption of ECAS valve earth 
connection (B253)

-

Interruption on pin 15 of the ECU

-

Only fault message if ECAS is active

-

Difference in height level on left and right 
side

-

Driving height is not reached

-

No rear axle chassis height control

62

Fault message while lowering front axle
-

Mechanical front axle ECAS valve failure 
(B166)

-

Internal height sensor failure (F614)

-

Mechanical height sensor failure (F614)

-

Interruption of ECAS valve earth 
connection (B166)

-

No chassis height control, front axle

-

Only fault message if ECAS is active

-

No chassis height control

80

Internal Wabco software failure

81

No speed signal
-

Interruption or short circuit to supply on pin 
22 of the ECU

-

No noticeable system limitation

Fault code

Fault code description with possible cause

System response

ECAS-2

1-6

©

ECAS-2 fault codes

8

DAVIE XD diagnostics manual

 

 

 

 

 

 

 

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