Skoda OCTAVIA 2004 Instruction manual
Service
List of Supplements to
Workshop Manual OCTAVIA dition: 01.04
1.9 l/66 kW (TDI) ngine, Fuel Injection and Glow Plug System
Replaces List of Supplements - dition: 09.03
Supple- dition Subject Article Number
ment
08.96 Basic dition of Workshop Manual S00.5111.50.20
1 05.97 Supplement to Basic dition S00.5111.51.20
2 03.98 Modifications for Vehicles ä 08.97 S00.5111.52.20
3 02.99 Modification of Fault Code S00.5111.53.20
4 12.00 Modifications for Vehicles 08.00 äS00.5111.54.20
5 09.03 Supplement to Repair Group 01 and 23 S00.5111.55.20
6 01.04 Supplement to Repair Group 01 and 23 S00.5111.56.20
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Contents ⇒ next page.
The Service Manual is intended only for use within the
koda Organisation; it is not permitted to pass it on to
third persons.
© 2004 KODA AUTO a. s.
Printed in CR
S00.5111.56.20
ProCarManuals.com
OCTAVIA Service
dition 01.04
S00.5111.56.20
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I ------------
Contents
01 Self-Diagnosis Page
Self-Diagnosis.............................................................................................................................. 01-1
- Properties of the self-diagnosis ................................................................................................ 01-1
- echnical data of self-diagnosis ............................................................................................... 01-1
- Connecting tester V.A.G 1552 and select engine electronics control unit ................................ 01-2
- Interrogating and erasing fault memory.................................................................................... 01-5
- Fault table ................................................................................................................................. 01-8
Actuator diagnosis ...................................................................................................................... 01-18
- Performing actuator diagnosis ................................................................................................. 01-18
- Basic setting ............................................................................................................................. 01-21
- Coding control unit ................................................................................................................... 01-23
Readiness code ........................................................................................................................... 01-24
- Reading readiness code ........................................................................................................... 01-24
- Generate readiness code ......................................................................................................... 01-26
Measured value blocks ............................................................................................................... 01-28.2
- Reading measured value block ................................................................................................ 01-28.2
- Display nominal values for general vehicle inspection ............................................................. 01-29
- Display nominal values for injection pump ............................................................................... 01-38
- Display nominal values for engine idling .................................................................................. 01-46
- Display nominal values for exhaust gas recirculation .............................................................. 01-49
- Display nominal values for temperature sensor ....................................................................... 01-51
- Display nominal values for automotive power .......................................................................... 01-52
- Display nominal values for charge pressure control ................................................................ 01-58
23 Fuel Formation/Injection Page
Servicing a diesel direct fuel injection system ......................................................................... 23-1
- Safety measures ...................................................................................................................... 23-1
- Rules for cleanliness ................................................................................................................ 23-1
- Overview of fitting locations ä 07.97 ....................................................................................... 23-2
- Overview of fitting locations 08.97 ä 07.00 ............................................................................. 23-2.2
- Overview of fitting locations 08.00 ä....................................................................................... 23-3.1
- Assembly overview of injection pump ...................................................................................... 23-4
- Assembly overview of fuel filter ................................................................................................ 23-5
- Assembly overview of throttle mechanism ............................................................................... 23-6
- Adjusting sender for accelerator pedal position ....................................................................... 23-7
- Disassembling and assembling air filter ................................................................................... 23-7.2
- Removing and installing injection pump ................................................................................... 23-8
- Dynamically testing and setting commencement of injection ................................................... 23-13
- Removing and installing and testing injection nozzles ............................................................. 23-16
- Wiring and Component est with est Box .............................................................................. 23-19
- Replacing engine control unit ................................................................................................... 23-20
Inspecting the charge air pressure system .............................................................................. 23-22
- Inspecting charge air pressure ................................................................................................. 23-22
- Inspecting charge pressure control solenoid valve (N75) ........................................................ 23-24
- Inspecting intake manifold temperature sender (G72) ............................................................. 23-25
- Inspecting intake manifold pressure sender (G71) and altitude sender ................................... 23-26
- Hose layout plan for charge pressure control ........................................................................... 23-27
Testing injection control ............................................................................................................. 23-28
- esting injection timing device control range ............................................................................ 23-28
- esting the commencement of injection valve (N108) ............................................................. 23-29
- Inspecting fuel temperature sender .......................................................................................... 23-30
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Service OCTAVIA
dition 01.04
S00.5111.56.20
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II ------------
Inspecting exhaust gas recirculation system........................................................................... 23-32
- Inspecting exhaust gas recirculation ........................................................................................ 23-32
- Inspecting exhaust gas recirculation valve (N18) ..................................................................... 23-34
- Inspecting air mass meter (G70) .............................................................................................. 23-35
- Vacuum plan of hose layout plan for the exhaust gas recirculation system ............................. 23-37
Inspecting control units input quantities .................................................................................. 23-38
- esting voltage supply for diesel direct injection system .......................................................... 23-38
- esting engine speed sender (G28) ......................................................................................... 23-41
- esting needle lift sender (G80) ............................................................................................... 23-42
- esting coolant temperature sender (G62) ............................................................................... 23-43
- esting brake light switch and brake pedal switch ................................................................... 23-44
- esting modulating piston movement sender (G149) and metering adjuster (N146) ............. 23-45
- esting accelerator pedal position sender (G79) ...................................................................... 23-47
Testing auxiliary signals ............................................................................................................. 23-49
- esting signals from/to the air conditioning system .................................................................. 23-49
- esting clutch pedal switch (F36) ............................................................................................. 23-51
- esting speed signal ................................................................................................................. 23-52
- esting engine speed signal ..................................................................................................... 23-53
- Activating or deactivating cruise control system ....................................................................... 23-54
- esting cruise control system ................................................................................................... 23-55
- esting CAN-Bus databus ........................................................................................................ 23-55.3
Servicing intake manifold 08.97 ä............................................................................................ 23-56
- Inspecting the change-over of the intake manifold flap ............................................................ 23-57
- Hose layout plan for intake manifold flap operation ................................................................. 23-59
28 Glow plug system Page
Inspecting glow plug system ..................................................................................................... 28-1
- Inspecting proper operation ...................................................................................................... 28-1
- Inspecting glow plugs ............................................................................................................... 28-2
- Inspecting glow period warning lamp ....................................................................................... 28-2
ProCarManuals.com
OCTAVIA Self-diagnosis 01
Edition 12.00
S00.5111.54.20
------------
01-5 ------------
Self-diagnosis
Features of self-diagnosis
The diesel direct injection system control unit is
equipped with a fault memory. The fault memory
is designed as a permanent memory and as a
volatile memory.
If faults occur in the monitored sensors or com-
ponents, these are stored in the fault memory
together with an indication of the fault type.
The engine control unit analyses this fault infor-
mation and distinguishes the fault types ⇒ page
01-8, ault Table, and stores these faults until
the contents of the fault memory are erased.
aults which occur only temporarily (sporadi-
cally), are displayed as sporadic by the addi-
tion /SP. The cause of a sporadic fault may
be, for example, a loose contact or a temporary
open circuit in the wiring. If a sporadic fault no
longer occurs within 50 engine starts, it is auto-
matically erased from the fault memory.
The stored faults can be read out with the vehi-
cle system tester V.A.G 1552 or V.A.G 1551, or
also with VAS 5051 ⇒ page 01-5.
After any faults have been rectified, it is then
necessary to erase the fault memory ⇒ page
01-6.
Notes:
♦The description which follows relates only to
the vehicle system tester V.A.G 1552 using
the programme card version 5.0.
♦If see info in literature appears in the dis-
play of the vehicle system tester, look for the
appropriate text in the fault table on the ba-
sis of the fault code.
♦Use of the fault reader V.A.G 1551 (with pro-
gramme card version 8.0) with integrated
printer, or VAS 5051, is similar. Slight varia-
tions are possible in the readouts in the dis-
play.
Technical data of self-diagnosis
Interrogating control unit version
The control unit version is displayed when the
vehicle system tester V.A.G 1552 is connected
and the engine electronics control unit is se-
lected ⇒ page 01-2.
------------
01-1 ------------
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OCTAVIA
01 Self-diagnosis
Edition 12.00
S00.5111.54.20
------------
------------------------
01-2 ------------
Functions available when using vehicle sys-
tem tester V.A. 1552
Please refer to the table below for the require-
ments necessary to enable you to select the
desired functions.
Function Condition
Engine not Engine
running, idling
ignition on
01 Interrogate control unit yes yes
version
02 Interrogate fault memory yes1 yes
03 Final control diagnosis yes yes
04 Basic setting no yes
05 Erase fault memory yes yes
06 End output yes yes
07 Code control unit yes no
08 Read measured value yes yes
block
1 Only perform when ignition switched on if
engine does not start (operate starter first
of all for at least 6 seconds .
Connecting vehicle system tester
V.A. 1552 and selecting engine
electronics control unit
Special tools, testers and aids required
♦Vehicle system tester V.A.G 1552 with cable
V.A.G 1551/3, 3A, 3B or 3C
Test conditions
lBattery voltage at least 11.5 V
lFuse 12 o.k.
lEarth connections at gearbox and on left
below battery o.k.
ProCarManuals.com
OCTAVIA Self-diagnosis 01
Edition 12.00
S00.5111.54.20
------------
------------------------
------------
K- Connect vehicle system tester V.A.G 1552
with cable V.A.G 1551/3, 3A, 3B or 3C.
After the vehicle system tester has been con-
necte :
- Depen ing on the esire function, switch
the ignition on or start the engine ⇒ page
01-2, table of Available functions.
If the rea outs which appear in the isplay o
not correspon to the escription in the proce-
ure, refer to the following notes:
Notes:
♦If Error in data transmission is displayed
because of an input error, disconnect cable
at vehicle system tester, plug it in again and
repeat the steps.
K♦If one of the following messages appears in
the display, perform fault finding according
to diagnostic cable fault finding programme:
⇒Current Flow Diagrams, Electrical Fault
Fin ing an Fitting Locations bin er, or
⇒Operating Instructions of vehicle system
tester
Note:
Operate the vehicle system tester on the basis
of the readout in the display.
KRea out in isplay:
- Enter a ress wor 01 for Engine electron-
ics an confirm the entry with the key Q.
Test of vehicle systems HELP
Control unit oes not answer
Test of vehicle systems HELP
Error in establishing communication
Test of vehicle systems HELP
K wire not switching to earth
Test of vehicle systems HELP
K wire not switching to positive
Test of vehicle systems HELP
Enter a ress wor XX
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OCTAVIA
, 1!
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S00.5111.55.20
KThe control unit identification appears in the dis
play, e.g.:
♦038906018BQ Part no. of control unit part1)
♦1.9 l Engine displacement
♦R4 Engine displacement ver
sion (4 cyl. in line engine)
♦EDC Injection system (Electronic
Diesel Control)
♦G or no Vehicle with or without
display cruise control system
♦00 Control unit mapping
♦MG Manual gearbox
AG Automatic gearbox
♦2112 Data status (software ver
sion) of control unit
♦Coding 00002 Coding variant of control unit
♦WSC 01234 Workshop code from the
vehicle system tester V.A.G
1552 with which the last
coding was performed
+
038906018BQ 1.9 l R4 EDC G00SG 2112 →
Coding 00002 WSC 01234
(/@ ' !%
038906018B 1002 ä 08.97
038906018BC 1822 ä 08.98
038906018BQ 2112 08.98 ä 04.99
038906018GM 2162 05.99 ä 07.00
038906012F 3313 08.00 ä
038906012H 3315 08.00 ä
038906012HA 4922 08.03 ä
1) For current control unit version spare parts
catalogue
Notes:
⇒
♦
!
♦"
♦
------------
01-4 -------------
ProCarManuals.com
OCTAVIA Self-diagnosis 01
Edition 12.00
S00.5111.54.20
------------
01-9 ------------------------
01-5 ------------
Test of vehicle systems HELP
Select function XX
Test of vehicle systems HELP
Select function XX
X faults recognized!
Test of vehicle systems HELP
Select function XX
♦Storage of non-existent faults in fault memory
♦Functions not being performed
♦Reduction in life of automatic gearbox
If the code does not match the corresponding
version in the vehicle:
Check coding of engine control unit ⇒ page
01 23, Coding engine control unit.
Press → key.
KReadout in display:
For further procedure ⇒ Repair descriptions.
Interrogating and erasing fault
memory
Special tools, testers and aids required
♦Vehicle system tester V.A.G 1552 with cable
V.A.G 1551/3, 3A, 3B or 3C
Interrogating fault memory
Connect vehicle system tester V.A.G 1552
with cable and select engine electronics con
trol unit (address word 01). Engine should
be idling for this step.
(Connecting vehicle system tester and se
lecting engine electronics control unit ⇒ page
01 2).
Only if the engine does not start:
Switch ignition on.
KReadout in display:
Enter 02 for the function Interrogate fault
memory and confirm the entry with the key
Q.
KThe number of stored faults or No fault recog
nized! appears in the display.
If no fault is stored:
Press → key.
KReadout in display:
Enter 06 for the function End output and
confirm entry with the key Q.
ProCarManuals.com
OCTAV1A
01 Self-Diagnosis
dition 01.04
S00.5111.56.20
If one or several faults are stored:
-→ Press key.
KRead-out of fault number on display, e.g.:
-→ Press key.
KFault source and fault type appear in the dis-
play, e.g.:
-→ Press key.
he stored faults are displayed in sequence.
-→ Press key.
KRead-out on display:
- Enter 06 for the function end output and
confim entry with key Q.
- Rectify fault by referring to the fault table
⇒ page 01-8.
Note:
When carrying out test and removal and instal-
lation operations, faults, such as connectors
unplugged, may also be detected by other con-
trol units. This is why, when the work is con-
cluded, that it is necessary to interrogate and
erase the fault memory on all control units. For
this you must proceed as follows:
- Enter 00 twice for the address word Auto-
matic check sequence and confirm entry
with Q key. he -V.A.G 1552- sends all known
address words in sequence.
rasing fault memory
Test condition
lRectifying fault
Note:
After fault elimination the fault memory must
again as described be interrogated and subse-
uently erased.
For vehicles 08.03 ä
Whenever the fault memory is erased, it is nec-
essary to generate a readiness code ⇒ page
01-26.
- Connect vehicle system tester -V.A.G 1552-
and select the engine electronics control unit
(address word 01). he engine must be run-
ning in idle.
(Connect vehicle system and select engine
electronics control unit ⇒ page 01-2).
------------
01-6 -------------
→
Fault number: 00542
Needle lift sender -G80 →
Short-circuit to earth
Vehicle system test HELP
Select function XX
ProCarManuals.com
OCTAVIA Self-Diagnosis 01
Edition 02.99
S00.5111.53.20
------------
01-7 ------------
Test of vehicle systems HELP
Select function XX
X faults recognized
Test of vehicle systems HELP
Select function XX
Test of vehicle systems →
Fault memory is erased
KReadout in display:
- Press the keys 0 and 2 for the function „In-
terrogate fault memory“ and confirm the en-
try with the key Q.
KThe number of stored faults appears in the dis-
play.
If one or several faults are stored:
The stored faults are displayed one after the
other.
KAfter the stored faults have been displayed, the
following readout appears:
- Press the keys 0 and 5 for the function „Erase
fault memory“ and confirm the entry with the
key Q.
KReadout in display:
Note:
If you have switched off the ignition between
„Interrogating fault memory“ and „Erasing fault
memory“, the fault memory is not erased.
- Press the →key.
- Press the keys 0 and 6 for the function „End
output“ and confirm the entry with the key Q.
- Carry out a road test. During the road test,
once again interrogate the fault memory. No
further faults should be displayed.
ProCarManuals.com
OCTAVIA
, 1!
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#2
Notes:
♦%*+* ä
"",
$',
♦ "
-".
',
♦$
♦/,
!
⇒
Operating instructions for vehicle system
tester
♦"
%
"
0% 1"2
"
$
-
.34!
*%93&77.
#2
%
,,7-
!%
%1&.5
Implausible sig
nal
No signal
,,7
%
%1&8
Short circuit to
positive
Line interrup
tion/short circuit
to earth
Supply voltage
'
8,7
8,
87-
87:
877
87
(2
♦Bent or loose sensor
washer
♦Distance to speed sender/
sensor rotor too great
♦Metallic swarf on engine
speed sender G28
♦Line interruption of
screening
♦G28 defective
♦G28 defective
♦Line interruption or short
circuit
♦Line interruption of
screening.
♦Short circuit to positive
♦G71 defective
♦Line interruption or short
circuit to earth
♦G71 defective
♦Line interruption or short
circuit
♦Line interruption or short
circuit
(2
♦Poor starting
♦Irregular engine running,
misfiring
♦Increased idling speed
♦Glow period indicator light
flashes
♦Reduced performance
♦No display on rev counter
♦Engine does not start
♦Poor performance
*)!
Remove noise insulation
and check sensor washer
Check engine speed sen
sor
⇒
page 23 41
Check intake manifold
pressure
⇒
page 23 26
Check sender G71
Check intake system for
leaks
⇒
page 23 27
------------
01-8 -------------
ProCarManuals.com
OCTAVIA Self-Diagnosis 01
Edition 02.99
S00.5111.53.20
Readout on V.A.G 1552
Fault number Possible cause of fault Possible effects Rectifying fault
old
00522
Coolant temperature
sender -G62
Short circuit to
earth
Open/short
circuit to positive
00527
Intake manifold tem-
perature sender -G72
Short circuit to
earth
Open/short
circuit to positive
00532
Supply voltage
Implausible signal
as appropriate
Voltage supply tml.
15
Voltage too low
new
17663
17664
17568
17569
18008
♦-G62 faulty
♦Cable has short circuit to
earth
♦-G62 faulty
♦Open circuit in wiring or
cable has short circuit to
positive
♦-G72 faulty
♦Cable has short circuit to
earth
♦-G72 faulty
♦Open circuit in wiring or
short circuit to positive
♦Control unit was con-
nected when ignition on
♦Open circuit in wiring or
short circuit
♦Voltage not present when
ignition on (terminal 15)
♦Diesel direct injection sys-
tem control unit -J248
faulty
♦Voltage supply relay termi-
nal 30 (J322) faulty
♦Black exhaust when start-
ing
♦Engine preheater does not
operate
♦Preglowing always oper-
ates for about 20 seconds
♦Engine preheater does not
operate
♦Engine does not start
♦Engine stops
- Test coolant temperature
sender ⇒page 23-43
- Test intake manifold tem-
perature sender
⇒page 23-25
- Erase fault memory and
continue checking vehicle
- Test voltage supply of die-
sel direct injection system
control unit ⇒page 23-38
- Test voltage supply of ter-
minal 15
⇒Current Flow Diagrams,
Electrical Fault Finding
and Fitting Locations
binder
- Replace control unit
⇒page 23-20
- Test voltage supply of die-
sel direct injection system
control unit ⇒page 23-38
------------
------------
ProCarManuals.com
OCTAVIA
01 Self-Diagnosis
Edition 02.99
S00.5111.53.20
Readout on V.A.G 1552
Fault number Possible cause of fault Possible effects Rectifying fault
old
00539
Fuel temperature
sender -G81
Short circuit to
earth
Open/short
circuit to positive
00542
Needle lift sender
-G80
Short circuit to
earth
Implausible signal
Open/short
circuit to positive
new
17570
17571
17653
17654
17655
♦-G81 faulty
♦Cable has short circuit to
earth
♦-G81 faulty
♦Open circuit in wiring or
short circuit to positive
♦Connector for injection
pump separated
♦-G80 faulty
♦Open circuit in wiring or
short circuit
♦Fuel supply (was) inter-
rupted: tank has run
empty, feed line or filter
blocked, system drawing
in air
♦(Sporadic) open circuit in
wiring to fuel cut-off valve
♦Sender plate of engine
speed sender bent or
loose
♦-G80 faulty
♦Injection pump faulty
♦-G80 faulty
♦Sporadic open circuit in
wiring (cable break)
♦Reduced output
♦Several faults stored
♦Engine stops
♦Glow indicator lamp
flashes
♦Rough engine running
♦Reduced output
♦Fault 00550 Commence-
ment of injection control
possible
♦Misfiring, jerking
♦Engine stops
♦Misfiring
♦Misfiring at exactly
3000 rpm
♦Misfiring, jerking (particu-
larly at high revs)
♦Fault 01268 quantity ad-
juster control difference
stored
♦Irregular engine running,
misfiring
♦No throttle response after
overrun
♦Glow indicator lamp
flashes
♦Misfiring, jerking
♦Reduced output
- Test fuel temperature
sender ⇒page 23-30
- Check plug connection for
injection pump
- Test needle lift sender
⇒page 23-42
- Check fuel system
- Check cable connection
and plug connection at in-
jection pump
- Take off oil pan and in-
spect sender plate
- Replace needle lift sender
- Replace injection pump
- Test needle lift sender
⇒page 23-42
------------
01-10 ------------
ProCarManuals.com
OCTAVIA Self-Diagnosis 01
Edition 02.99
S00.5111.53.20
Readout on V.A.G 1552
Fault number Possible cause of fault Possible effects Rectifying fault
old
00545
Engine/gearbox elec-
trical connection 1)
00550
Commencement of
injection control
Control difference
new
-
17656
♦Open circuit in wiring or
short circuit
♦Commencement of deliv-
ery not o.k.
♦Adjustment travel of injec-
tion pump blocked (dirt,
swarf)
♦Engine was stalled (within
the last 50 starts)
♦Fuel feed (was) inter-
rupted: tank has run
empty, feed line or filter
blocked, system drawing
in air
♦Open circuit in wiring to
commencement of injec-
tion valve -N108
♦Commencement of injec-
tion valve -N108 worn
♦Hard gearshifts
♦Poor performance at
higher revs
♦Engine difficult to start
♦Poor performance at
higher revs
♦Fault 00542 Needle lift
sender implausible signal
may be stored
♦Engine clatters when id-
ling as commencement of
injection constantly ”ad-
vanced”
♦Several faults may be
stored
♦No constant commence-
ment of injection possible
at ”Basic setting” (display
block 2 varies over more
than 10 readouts)
♦Irregular engine running,
poor performance
- Test signals from/to auto-
matic gearbox
A - Signal for gearshift
- Test and set commence-
ment of injection
⇒page 23-13
- Test injection timing con-
trol range ⇒page 23-28
- Erase fault memory, con-
tinue checking vehicle
- Check fuel system
- Test commencement of
injection valve
⇒page 23-29
- Test fuse
- Replace commencement
of injection valve
1) Not available at present.
------------
01-11 ------------
ProCarManuals.com
OCTAVIA
01 Self-Diagnosis
Edition 02.99
S00.5111.53.20
Readout on V.A.G 1552
Fault number Possible cause of fault Possible effects Rectifying fault
old
00553
Air mass meter -G70
Implausible signal
Open/short
circuit to earth
Short circuit to posi-
tive
Supply voltage
00575
Intake manifold pres-
sure
Control difference
if appropriate
Charge pressure
Control difference
new
16485
17552
17553
17554
17958
♦Engine was stalled (within
the last 50 starts)
♦Battery weak
♦Sporadic open circuit in
wiring (cable break) to
needle lift sender -G80
♦Air filter blocked
♦Vacuum hoses of exhaust
gas recirculation incor-
rectly connected or me-
chanical EGR valve con-
stantly open
♦Air mass meter faulty
♦-G70 faulty
♦Open circuit in wiring or
short circuit to earth
♦-G70 faulty
♦Open circuit in wiring or
short circuit to positive
♦Open circuit in wiring or
short circuit
♦Hoses wrongly connected,
not fitted on, blocked,
leaking
♦Turbocharger vacuum unit
faulty
♦Charge pressure control
solenoid valve -N75 faulty
♦Poor performance
♦Air mass constantly indi-
cated in measured value
block
♦Misfiring, jerking
♦Fault 00542 Needle lift
sender implausible signal
possible or open/short cir-
cuit to positive
♦Irregular idling, poor per-
formance
♦Poor performance, jerking
♦Reduced output
♦Black exhaust possible
when accelerating from
low revs
♦Sudden drop in power
♦Reduced output
- Erase fault memory, con-
tinue checking vehicle
- Test battery
- Test needle lift sender
⇒page 23-42
- Inspect intake system
- Inspect vacuum hoses
⇒page 23-37
- Test air mass meter
⇒page 23-35
- Test charge pressure
⇒page 23-22
- Inspect charge pressure
hoses ⇒page 23-27
------------
------------
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OCTAVIA 1! ,
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*%93&77.
#2
%
,,.7
%!
Implausible sig
nal
If necessary
9%!1
Implausible sig
nal
9%!1
Signal too great
,,.
&'%'1
!1A.
Short circuit to
positive
Line interrup
tion/short circuit
to earth
,,5
=2%!"
-,
Implausible sig
nal
,,8
/
)'
1 :7
Undefined
switch status
'
557
8:5
5,.:
5,.7
5,,
1
(2
♦Line interruption between
speedometer sender G22
and dash panel insert
♦G22 defective
♦Speedometer G21 defec
tive
♦Line interruption between
dash panel insert and en
gine control unit
♦Short circuit to positive
♦Line interruption
♦Bulb defective
♦Short circuit to earth
♦Diesel direct injection sys
tem relay J322 jams
♦E45 defective
♦Line interruption or short
circuit
(2
♦CCS not operational
♦Air conditioning not opera
tional
♦Possible load alteration
shock
♦Glow period warning lamp
not operational
♦Glow period warning lamp
not operational
♦Glow period warning lamp
lights up constantly
♦Engine does not start
(safety deactivation)
♦Cruise control system not
operational
*)!
Check speed signal
⇒
page 23 52
Check speedometer
sender
⇒
Electrical System; Repair
Group 90
Check glow period warn
ing lamp
⇒
page 28 2
Test voltage supply for die
sel direct injection system
⇒
page 23 38
Check cruise control sys
tem
⇒
page 23 55
Reading measured value
block 6
⇒
page 01 35
------------
01-13 -------------
ProCarManuals.com
OCTAVIA
01 Self-Diagnosis
Edition 02.99
S00.5111.53.20
Readout on V.A.G 1552
Fault number Possible cause of fault Possible effects Rectifying fault
old
00741
Brake pedal monitor-
ing
Implausible signal
00765
Modulating piston
movement sender
-G149
00777
Accelerator pedal po-
sition sender -G79
Signal too large
Voltage supply
Implausible signal
as appropriate
Accelerator pedal po-
sition sender 1/2
-G79+-G185 1)
Implausible signal
Short circuit to posi-
tive
01044
Engine control unit
incorrectly coded
new
-
17762
18039
18040
18047
-
18020
♦Switch incorrectly set
♦Open circuit in wiring
♦-F or -F47 faulty
♦Fuse faulty
♦Both brake lights faulty
♦10-pin connector for injec-
tion pump separated
♦Injection pump faulty
♦Open circuit in wiring or
short circuit
♦Open circuit in wiring
♦-G79 faulty (idling switch)
♦Open circuit in wiring or
short circuit
♦Open circuit in wiring
♦-G79 faulty (idling switch)
♦Short circuit to positive
♦-G79 faulty
♦Invalid control unit coding
♦Preglow indicator lamp
flashes
♦Fuse or brake light faulty
♦Several faults stored
♦Engine stops
♦Drivability problems
♦Engine stops
♦Speed governed to approx.
1100 rpm as safety meas-
ure
♦No throttle response
♦Preglow indicator light
flashes
♦Fast idling speed
♦Preglow indicator light
flashes
- Test -F and -F47 and set
⇒page 23-44
- Test fuse and brake light
- Inspect plug connection
of injection pump
- Test modulating piston
movement sender
⇒page 23-45
- Test accelerator pedal po-
sition sender
⇒page 23-47
- Code control unit
⇒page 01-23
1) Incorrect fault text readout. The correct readout is:
Accelerator pedal position sender -G79
------------
01-14 ------------
ProCarManuals.com
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