DAF LF45, LF55 Series. Instruction - page 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