DAF 95XF. Manual — part 191

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200438

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ECAS-2 fault codes

ECAS-2

DAVIE XD diagnostics manual

8

1. ECAS-2 FAULT CODES

1.1 INTRODUCTION

If the electronic unit detects a system fault, this

fault is usually stored in the memory of the

electronic unit as a fault code.

Most system faults will also generate a warning.

ECAS-2

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ECAS-2 fault codes

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DAVIE XD diagnostics manual

1.2 EXPLANATORY NOTES TO ECAS-2 FAULT CODES

Fault code

Fault code description with possible cause

System response

01

Internal failure in ECAS-2 electronic unit due to:
-

incorrectly programmed parameter

-

No further system limitation

02

Internal failure in ECAS-2 electronic unit due to:
-

height sensor calibration data

-

No further system limitation

03

Internal failure in ECAS-2 electronic unit due to:
-

ROM memory fault

-

No further system limitation

04

Internal failure in ECAS-2 electronic unit due to:
-

Wabco data

-

No further system limitation

05

Internal failure in ECAS-2 electronic unit due to:
-

height sensor calibration data parameter
fault

-

No further system limitation

06

Internal failure in ECAS-2 electronic unit due to:
-

defective RAM memory

-

No further system limitation

08

Internal failure in ECAS-2 electronic unit due to:
-

pressure sensor calibration data

-

No further system limitation

09

Solenoid valve failure
Supply voltage fault on pin 1 of the ECU due to:
-

interrupted wire 1117

-

defective fuse (E051)

-

No rear axle chassis height control

-

Driving height is not reached

10

Rear axle height sensor failure, right
Supply voltage fault due to:
-

defective height sensor (F613)

-

interruption or short circuit to supply of
height sensors (F612 + F613) on pin 8 or
pin 25 of the ECU

-

interruption of earth connection of height
sensors (F612 + F613)

-

Driving height is not reached

-

Part chassis height control or none at all

-

Difference in height level on left and right
side

11

Rear axle height sensor failure, right
Supply voltage fault due to:
-

defective height sensor (F612)

-

interruption or short circuit to supply of
height sensors (F612 + F613) on pin 8 or
pin 25 of the ECU

-

interruption of earth connection of height
sensors (F612 + F613)

-

Driving height is not reached

-

Difference in height level on left and right
side

-

Part chassis height control or none at all

12

Front axle height sensor failure
Supply voltage fault due to:
-

defective height sensor (F614)

-

interruption or short circuit to supply of
height sensor (F614) on pin 26 of the ECU

-

interruption of earth connection of height
sensor (F614)

-

Driving height is not reached

-

Part chassis height control or none at all

-

No chassis height control, front axle

16

Short circuit to supply of driven axle pressure
sensor on pin 5 or pin 6 of the ECU

17

Short circuit to supply of driven axle pressure
sensor on pin 5 or pin 6 of the ECU

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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

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200438

ECAS-2 fault codes

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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