Actuator Diagnosis - Skoda FABIA 2000 Workshop Manual

90
Readout on - V.A.G 1552-
01314
Engine control unit No communica-
tion
01316
Brake control unit No communica-
tion
01317
Control unit with No communica-
display in dash tion
panel insert -J285
01320
Climatronic control No communica-
unit -J255 tion
01321
Airbag control unit - No communica-
J234 tion
01330
Convenience sys- No communica-
tem central control tion
unit -J393
01598
Vehicle battery Signal too low
voltage
65535
Control unit defec-
tive

Actuator diagnosis

The final control diagnosis is a part of the electrical test.
Final control diagnosis can be used to test the following
components, depending on the equipment version:
♦
Warning lamp for hazard warning light system
♦
Windscreen wiper motor (stage 1 and 2)
90-6
6
page
Possible causes of
fault
♦
Data BUS defective
♦
Engine control unit
defective
♦
Data BUS defective
♦
ABS control unit de-
fective
♦
Data BUS defective
♦
Dash panel insert
defective
♦
Data BUS defective
♦
Air conditioning sys-
tem control unit de-
fective
♦
Data BUS defective
♦
Airbag control unit
defective
♦
Data BUS defective
♦
Central locking con-
trol unit defective
♦
Battery discharged
♦
Battery defective
♦
Control unit defec-
tive
Self-diagnosis of the vehicle voltage control unit II
FABIA 2000
Possible ef- Rectifying fault
fects
♦ Check data BUS ⇒ Chapter
Poor vehi- –
cle han-
90-9.
dling
–
Read fault memory of engine
♦
possibly
control unit. ⇒ Engine - Fuel
wrong dis-
Injection; Rep. Gr. 01.
plays in the
dash pan-
el insert
♦ Check data BUS ⇒ Chapter
Poor vehi- –
cle han-
90-9.
dling
–
Read out fault memory of
♦
possibly
ABS control unit ⇒ Chassis;
wrong dis-
Rep. Gr. 45.
plays in the
dash pan-
el insert
Check data BUS ⇒ Chapter
–
90-9.
No setting or
incorrect dis-
–
Read out dash panel insert
play
fault memory ⇒ Chapter 90-
2.
Check data BUS ⇒ Chapter
♦
Poor vehi- –
cle han-
90-9.
dling
–
Read out air conditioning sys-
♦
Air condi-
tem fault memory ⇒ Heating,
tioning sys-
Air conditioning; Rep. Gr. 01.
tem does
not operate
♦ Check data BUS ⇒ Chapter
possibly –
wrong dis-
90-9.
plays in the
–
Read out fault memory of the
dash pan-
airbag control unit ⇒ Body
el insert
Work; Rep. Gr. 01.
Check data BUS ⇒ Chapter
–
90-9.
Central lock-
ing does not
–
Read out fault memory of
operate
central locking control unit
⇒ Body Work; Rep. Gr. 01.
–
Charging battery.
Engine does
Test battery ⇒ Chapter 27-1.
–
not start
–
Replacing control unit
⇒ Chapter 97-2.
Electrical System
Edition 05.04
S00.5304.11.20