DAF 95XF. Manual — part 208

©

200438

2-1

ECAS-3 customer parameters

ECAS-3

DAVIE XD diagnostics manual

13

2. ECAS-3 CUSTOMER PARAMETERS

2.1 INTRODUCTION

Customer parameters
Customer parameters are the settings of an

electronic system. The customer parameters

permit adapting control functions of a system to

the customer's particular wishes and/or needs

within certain limits. The customer parameters

are stored in a list in the memory of the electronic

unit. Customer parameters can be modified using

the programming feature of DAVIE XD.

Programming using DAVIE XD is only possible if

the logged-in user has been registered as a

"Master Technician".

Note:

Erroneous settings of customer parameters may

affect the action of control functions to such an

extent that they function eratically or not at all.

After modification of the settings the (modified)

customer parameters must be stored in the

electronic unit using the programming function in

the customer parameter overview.

Customer parameter names and codes
Each customer parameter in a system has its

own name and code. The following explanation of

the customer parameters includes only the

codes. The availability of a customer parameter

in a system depends on the programmed

software in the electronic unit. The programmed

software depends on the vehicle configuration/

identity card data.

Standard values
Standard values, options and setting ranges may

vary according to the software variants of

DAVIE XD and the system. This is why they have

not been included in the following explanation of

the customer parameters.

ECAS-3

2-2

©

200438

ECAS-3 customer parameters

DAVIE XD diagnostics manual

13

2.2

E

X

P

LANATORY

NOTES

TO ECAS-3

CUSTOME

R

PARAME

TERS

ECAS

-3

c

u

sto

m

er

para

meter

c

o

de

Exp

la

n

atio

n

D

e

p

en

de

nc

es:

Notes

Minimum

va

lu

e to be

se

t:

Ma

ximum

value

to

b

e

set:

4

-0

1

Wi

th

thi

s

p

arameter the protection

fo

r e

m

p

ty be

llow

s ca

n

be

swi

tche

d on or off.

When

the

p

rote

cti

on is switched off, there is no resid

ual

pressure in the air be

llow

s so that

'p

leating

' of

the

bell

ows is

n

o long

er prevented

.

4

-0

2

T

his parameter makes it

po

ssible

to increa

se th

e

tolera

nce fi

eld (hysteresis)

of the

sen

sor se

nsitivity.

Thi

s

is a

solu

tion

if a

cu

sto

m

e

r compla

ins a

bou

t unstabl

e

re

gul

ati

on by ECAS-3. If a larg

er

tol

erance

fiel

d is

ch

osen, th

e heig

ht

cha

nge

o

f th

e chassis must be

increase

d to al

low ECAS

to make a correction.

4

-0

3

T

his parameter ena

ble

s a certain

veh

icle slan

t to be

redu

ced or increa

se

d.

Redu

ctio

n ma

kes

the

veh

icle stand stra

igh

te

r (if

the

ca

libra

tion is correct, i.e

. the

sa

me hei

ght left and ri

ght).

Incre

ase will

make the vehi

cle slant fu

rth

er, thereb

y

enab

ling

u

nstable

h

orizontal

setting

s

to

be

preve

nte

d.

4

-0

4

T

he time of th

e de

lay setti

ng can

be le

ngthe

ned w

ith

th

is

par

a

meter.

4

-0

5

T

his parameter rela

tes to

th

e

storag

e of

faul

ts in the

el

ectro

nic unit on the action of admitting ai

r to or

exha

usting

ai

r

from the

ai

r b

ello

ws.

A

fa

ult is i

den

tifie

d if the

hei

ght sen

sor read

ing

doe

s not

ch

ang

e d

uring

the

p

ro

grammed

time

whil

e i

t shou

ld

have do

ne becau

se of

the de

sired action

. Th

is

time can

be lengthened with this

pa

rameter. The

ECAS system

the

n waits long

er

b

efore sto

ring the fa

ult becau

se

the

heig

ht

sen

sor

re

adin

g has not ch

ang

ed.

©

200438

3-1

System inspection with DAVIE XD

ECAS-3

DAVIE XD diagnostics manual

13

3. SYSTEM INSPECTION WITH DAVIE XD

3.1 CALIBRATING THE SENSORS

The sensors must be calibrated if the height

sensors or the ECAS unit are replaced.

Note:

Calibration should be carried out with due care to

avoid physical injury and material damage.

When calibrating, the maximum desired chassis

height at the rear axle and the maximum desired

chassis height at the front axle must be

calibrated.

Notes to sensor calibration
1.

Place the gauges between the driven axle

and the chassis.

2.

Lower the chassis using DAVIE until it rests

on the gauges.

Note:

-

On vehicles with an air-sprung front axle

a gauge must also be placed between

the axle and the chassis.

3.

Now bring the chassis to the desired

maximum height at the front axle.

Then bring the chassis to the desired

maximum height at the rear axle.

Note:

The maximum height of the chassis is limited

by the mechanical stop of the shock

absorber.

The shock absorber of the non-driven axle

may reach its stop before the shock absorber

of the driven axle.

ECAS-3

3-2

©

200438

System inspection with DAVIE XD

13

DAVIE XD diagnostics manual

3.2 INSPECTION OF HEIGHT SENSORS

1.

Admit air to the bellows. The value indicated

by DAVIE must now show a linear increase.

2.

Exhaust air from the bellows. The value

indicated by DAVIE must now show a linear

decrease.

Note:

If two height sensors are used, these two

sensors, with the vehicle at the driving level, may

give a different reading (caused, for example, by

play in the linkage). This may result in the vehicle

not being level. This can be solved by

recalibrating the sensors.