engine VOLKSWAGEN JETTA 1998 Service Manual

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Switch to measuring range:
Voltage measurement (2 V )
Test
step V.A.G
1598
sockets Item
tested Test
conditions
- Additional
operations Specification
Measures for deviations
from specification
9 19 + 20 Right front
ABS wheel
speed
sensor -
G45-
voltage
signal
Vehicle
raised
- Check installation of
right front ABS wheel
speed sensor -G45- and
rotor.


Ignition
switched off

- Rotate front
right wheel at
approx. 1
rev./sec. min. 65 mV
alternating
voltage - Check whether right
front ABS wheel speed
sensor -G45- has been
interchanged and Read
measured value block
Page 01
-61 , display
group number 001
10 1 + 2 Left front
ABS wheel
speed
sensor -
G47-
voltage
signal Vehicle
raised
- Check installation of left
front ABS wheel speed
sensor -G47- and rotor.


Ignition
switched off

- Rotate front
left wheel at
approx. 1
rev./sec. min. 65 mV
alternating
voltage - Check whether left front
ABS wheel speed sensor
-G47- has been
interchanged and Read
measured value block
Page 01
-61 , display
group number 001
Стр. 17из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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Switch to measuring range:
Voltage measurement (2 V )
Test
step V.A.G
1598
sockets Item
tested Test
conditions
- Additional
operations Specification
Measures for deviations
from specification
11 22 + 23 Right rear
ABS wheel
speed
sensor -
G44-
voltage
signal
Vehicle
raised
- Check installation of
right rear ABS wheel
speed sensor -G44- and
rotor.


Ignition
switched off

- Rotate rear
right wheel at
approx. 1
rev./sec. min. 190 mV
alternating
voltage - Check whether right
rear ABS wheel speed
sensor -G44- has been
interchanged and Read
measured value block
Page 01
-61 , display
group number 001
12 6 + 5 Left rear
ABS wheel
speed
sensor -
G46-
voltage
signal Vehicle
raised
- Check installation of left
rear ABS wheel speed
sensor -G46- and rotor.


Ignition
switched off

- Rotate rear
left wheel at
approx. 1
rev./sec. min. 190 mV
alternating
voltage - Check whether left rear
ABS wheel speed sensor
-G46- has been
interchanged and Read
measured value block
Page 01
-61 , display
group number 001
Стр. 18из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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Switch to measuring range:
Resistance measurement (200 )
Test
step V.A.G
1598
sockets Item
tested Test
conditions
- Additional
operations Specification
Measures for deviations
from specification
13 3 + 14

Coding
bridge
Ignition
switched off0.0 to 1.0

Electrical Wiring
Diagrams, Troubleshooting
& Component Locations
binder - Check wiring using wiring
diagram
Стр. 19из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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Switch to measuring range:
Voltage measurement (20 V =)
Test
step V.A.G
1598
sockets Item tested
Test conditions
- Additional
operations Specification
Measures for
deviations from
specification
14 - Supply
voltage for
V.A.G 1551,
connector
T16
1)
Ignition
switched off
- Connect
multimeter V.A.G
1526 using adapter
set V.A.G 1594 to
connector T16
1) 10.0 to 14.5
V

Electrical Wiring
Diagrams,
Troubleshooting &
Component
Locations binder - Check wiring using
wiring diagram
1) Diagnostic connection contact assignment Page 01-106 .
Стр. 20из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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Switch to measuring range:
Resistance measurement 200
Test
step V.A.G
1598
sockets Item tested Test conditions
- Additional
operations Specification
Measures for
deviations from
specification
15 - Resistance
of K wire for
V.A.G 1551
connector
T16
1)
Ignition switched
off
- Disconnect multi-pin
connector from ABS
control module
(w/EDL) -J104- max. 1.5 - Check wiring
using wiring
diagram
Electrical Wiring
Diagrams,
Troubleshooting &
Component
Locations binder

- Connect test box
V.A.G 1598/21

- Connect multimeter
V.A.G 1526 to
contacts T16/7
1) and
T25/7 of multi-pin
connectors from ABS
control module
(w/EDL) -J104- using
adapter set V.A.G
1594
1) Diagnostic connection contact assignment Page 01-106 .
Стр. 21из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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Functional check: ABS warning light -K47-
Test
step V.A.G
1598
sockets Item
tested
Test
conditions
- Additional
operations Specification
Measures for
deviations from
specification
16 - Function of
ABS
warning
light -K47-
Switch
ignition on ABS warning light -
K47- lights up for
approx. 2 seconds
and goes out again

Electrical Wiring
Diagrams,
Troubleshooting &
Component Locations
binder
Repair Manual,
Body Interior,Repair
Group 70 - Check wiring using
wiring diagram
- Malfunction in
instrument cluster
Стр. 22из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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Functional check: Warning light for brake system -K118-
Test
step V.A.G
1598
sockets Item
tested
Test
conditions
- Additional
operations Specification
Measures for
deviations from
specification
17 - Function of
warning
light for
brake
system -
K118-
Brake fluid
level is OK.

Switch
ignition on Warning light for
brake system -
K118- lights up for
approx. 2 seconds
and goes out again
Electrical Wiring
Diagrams,
Troubleshooting &
Component
Locations binder - Check brake fluid
level warning
switch -F34- in
sealing cap

- Pull
connectors off
both front speed
sensors
- Start engine
and run at more
than 2000 rpm Warning light -
K118- lights up and
3 warnings are
sounded
Electrical Wiring
Diagrams,
Troubleshooting &
Component
Locations binder
Repair Manual,
Body Interior,Repair
Group 70 - Check wiring
using wiring
diagram
- Malfunction in
instrument cluster

- Reconnect
connectors to
both front speed
sensors again
- Check DTC
memory and
erase
Стр. 23из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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Functional check: ABS hydraulic pump -V64-
Test
step V.A.G
1598
sockets Item
tested
Test conditions
- Additional
operations Specification
Measures for
deviations from
specification
18 - Function of
ABS
hydraulic
pump -
V64-
Ignition switched
off
- Pull hydraulic
pump -V64-
connector T2 off
control module

- Connect Ground to
connector T2/1 and
battery voltage to
connector T2/2 on
hydraulic pump Hydraulic pump
runs without
malfunction (max.
10 secs.) - Perform output
Diagnostic Test
Mode (DTM)
Page 01
-74 .
- Replace control
module.
Hydraulic pump
does not run
Repair Manual,
Brake System,
Repair Group 45 - Replace
hydraulic unit.
Стр. 24из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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Switch to measuring range:
Resistance measurement (200 /20 M )
Test
step V.A.G
1598
sockets Item
tested Test conditions
- Additional operationsSpecification
Measures for
deviations from
specification
19 11 +10 Data
bus
wiring
Ignition switched
off

Set to measuring
range 200


- Disconnect multi-pin
connection from a
control module which
is connected via data
bus wiring:

- Connect test box
V.A.G 1598/21

- Check data bus
wiring for open circuit max. 1.5
Electrical Wiring
Diagrams,
Troubleshooting &
Component Locations
binder - Check wiring using
wiring diagram
Test step 19: Continued on next page
Стр. 25из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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Continuation of test step 19
Test
step V.A.G
1598
sockets Item
tested
Test conditions
- Additional
operations Specification
Measures for deviations
from specification
19

Set to
measuring
range 20 M

- Remove fuse S9

- Check wiring for
short circuit to
positive or earth




Electrical Wiring
Diagrams,
Troubleshooting &
Component Locations
binder - Check wiring using
wiring diagram
Стр. 26из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check