DAF 95XF. Manual - part 166

©

 200438

1-17

UPEC fault codes

UPEC

DAVIE XD diagnostics manual 

2

78-1

Short circuit to supply of electronically controlled 
fan clutch (B335) on pin A9 of the ECU

-

Fan speed too high

78-2

Short circuit to earth of electronically controlled 
fan clutch (B335) on pin A9 of the ECU

-

Fan speed too low

78-8

Speed of electronically controlled fan clutch 
(B335) cannot be controlled due to:
-

interruption on pin A9 and/or A16 of the ECU

-

interruption on pins A9 and B30 of the ECU

-

Fan speed is no longer controlled and 
increases to maximum

81-8

When the steering column switch is operated, 
several input signals are present at the ECU at 
the same time due to:
-

short circuit to supply on pin B34 of the ECU

-

Cruise control function cannot be activated

-

At the steering column switch the "RES" 
function is overruled by the "Set+" function

When the steering column switch is operated, 
several input signals are present at the ECU at 
the same time due to:
-

short circuit to supply on pin B32 of the ECU

-

Cruise control function cannot be activated

-

At the steering column switch the "RES" 
function is overruled by the "Set-" function

When the steering column switch is operated, 
several input signals are present at the ECU at 
the same time due to:
-

short circuit to supply on pin B33 of the ECU

-

"RES" function at the steering column switch 
cannot be activated

When the steering column switch is operated, 
several input signals are present at the ECU at 
the same time due to:
-

short circuit to supply on pin B24 of the ECU

-

Cruise control function cannot be activated

-

Control function for engine speed control 
cannot be activated

82-4

Input signal, via clutch pedal proximity switch 
(E575), on pin B20 of the ECU remains present, 
despite the fact that the vehicle has already 
reached a certain speed. This is due to:
-

defective proximity switch

-

short circuit to supply on pin B20

-

towing the vehicle with the engine running

-

No system response when operating the 
clutch pedal

83-1

Short circuit to supply on pin B28 of the ECU

-

Engine speed/torque limiting control cannot 
be activated

83-8

Unacceptable load on pin B28 of the ECU due to:
-

excessive contact resistance on connection 
point

-

Engine speed/torque limiting control cannot 
be activated

Fault code

Fault code description with possible cause

Symptom

UPEC

1-18

©

 200438

UPEC fault codes

2

DAVIE XD diagnostics manual

©

 200438

2-1

UPEC customer parameters

UPEC

DAVIE XD diagnostics manual 

2

2. UPEC 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.

UPEC

2-2

©

 200438

UPEC customer parameters

DAVIE XD diagnostics manual

2

2.

2

E

XPLAN

A

T

OR

Y N

O

TES TO U

P

EC

 CU

STO

M

ER

 PA

RA

METERS

UPEC cu

sto

m

er 

para

meter

 c

o

de

Exp

la

n

atio

n

D

ep

en

de

nce

s:

N

otes

Minimum 

va

lu

e to be

 

se

t:

Maximum

 

valu

e to

 be 

set:

Set

tin

gs relatin

g

 t

o

 "l

imiti

n

g

 fu

nctio

n

s"

2

-0

2

Setti

ng of the

 maxi

mu

m veh

icle spee

d in th

e "vehi

cl

e 

spee

d limiting

" co

ntrol fu

ncti

on. 

During

 p

ro

duction

 a

 stand

ard 

valu

e w

as p

rogrammed 

which can

 be

 mod

ified he

re. Passwo

rd

-protected.

2

-0

7

Setti

ng of the

 id

lin

g speed

.

2

-1

0

Setti

ng of the

 maxi

mu

m veh

icle spee

d in th

e "vehi

cl

e 

spee

d limiting

 for specia

l appl

ication

s" co

ntro

l fun

cti

on. 

Ap

pli

ca

tion exampl

e: 

foot 

boa

rd

 p

rote

cti

on with refuse 

co

llectio

n ve

hicle

s.

2

-1

1

Setti

ng of the

 maxi

mu

m veh

icle spee

d at 

wh

ich drivin

g 

is

 po

ssi

bl

e i

n th

e "

eng

in

e sp

ee

d co

nt

ro

l"

 co

nt

ro

l fu

nc

tion

. 

2

-3

6

In th

e fo

llow

ing situatio

n th

e 

to

ta

l number of litres of 

fue

l 

consu

m

e

d up to

 tha

t moment mu

st be in

put agai

n vi

a 

this customer 

parameter:

-

afte

r prog

ra

mmi

ng the

 UPEC uni

t (appl

icabl

e 

wh

en 

repla

cing the UPEC uni

t).

-

w

hen

 re

programmin

g the

 UPEC 

un

it b

ecause 

the 

value

 indica

te

d 

o

n th

e DIP disp

lay is not 

co

rre

ct.

The

 to

ta

l numbe

r of litres of fu

el co

nsumed ca

n be re

ad 

on th

e "old

" 

U

P

EC

 un

it.

If this i

nformati

on 

is no

 lon

ger p

resent, it is 

also 

possibl

e 

to 

in

put the

 a

verage

 fuel

 co

nsumption

 di

rectl

y via

 this 

cu

sto

m

e

r pa

rameter, after 

w

hich the to

ta

l number of 

lit

re

s 

of

 fu

el

 co

ns

ume

d i

s 

automaticall

y cal

culated

.

Thi

s in

fo

rma

tio

n is 

n

eed

ed to

 e

nab

le DIP to displ

ay 

agai

n th

e correct 

a

verage

 fue

l consumptio

n and the

 total 

number of litres 

o

f fuel con

su

m

ed.

Set

tin

gs relatin

g

 t

o

 "en

g

in

e speed co

ntrol

"

2

-1

4

Setti

ng of the

 maxi

mu

m en

gine

 sp

eed in

 the

 "e

ngin

e 

spee

d control" con

trol

 functio

n.

hi

gher th

an th

e 

hi

ghest value

 

of (2-27, 2-28, 

2-2

9)

Thi

s fixes th

e ma

ximum 

e

ngin

e speed

 wh

en the "set+"

 

fun

cti

on of 

the

 steerin

g column switch or eng

ine spee

d 

co

ntrol app

lication

 co

nnector (A068) is activated.