1998 VOLKSWAGEN JETTA ignition

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Test prerequisites

Switch ignition and electrical
consumers off before commencing the
check (headlights, lighting, fans ...).

Fuses must be OK (remove fuses from
fuse holder to check).
Electrical Wiring Diagrams,
Troubleshooting & Component
Locationsbinder

- Pull fuse holder out of cable channel.
- Release ABS Control Module (w/EDL) -
J104- connector -arrow 1- and pull off -
arrow 2-.
Стр. 3из 38 Electrical check of Mark 60

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Test step overview
Component to be tested

Voltage supply for ABS hydraulic pump -V64- to ABS control module
(w/EDL) -J104- - Perform test
step 1
Voltage supply for valves in ABS hydraulic unit -N55- to ABS control
module (w/EDL) -J104- - Perform test
step 2
Voltage supply (ignition/starter switch) to ABS control module (w/EDL) -
J104- - Perform test
step 3
Function of brake light switch -F-
- Perform test
step 4
Resistance of right front ABS wheel speed sensor -G45-
- Perform test
step 5
Resistance of left front ABS wheel speed sensor -G47-
- Perform test
step 6
Resistance of right rear ABS wheel speed sensor -G44-
- Perform test
step 7
Resistance of left rear ABS wheel speed sensor -G46-
- Perform test
step 8
Voltage signal of right front ABS wheel speed sensor -G45-
- Perform test
step 9
Voltage signal of left front ABS wheel speed sensor -G47-
- Perform test
step 10
Voltage signal of right rear ABS wheel speed sensor -G44-
- Perform test
step 11
Стр. 10из 38 Electrical check of Mark 60

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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
1 1 + 47 Voltage supply
for ABS hydraulic
pump -V64- to
ABS Control
Module (w/EDL) -
J104-
Ignition
switched
off 10.0 - 14.5 V
Electrical Wiring
Diagrams,
Troubleshooting &
Component Locations
binder - Check wiring using
wiring diagram
2 32 + 16 Voltage supply
for the valves in
ABS hydraulic
unit -N55- to ABS
Control Module
(w/EDL) -J104- Ignition
switched
off 10.0 - 14.5 V
Electrical Wiring
Diagrams,
Troubleshooting &
Component Locations
binder - Check wiring using
wiring diagram
Стр. 13из 38 Electrical check of Mark 60

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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
3 4 + 47 Voltage supply
(ignition/starter
switch) to ABS
Control Module
(w/EDL) -J104-
Ignition
switched
on 10.0 - 14.5 V
Electrical Wiring
Diagrams,
Troubleshooting &
Component
Locations binder - Check wiring using
wiring diagram
4 47 + 41 Function of brake
light switch -F- Ignition
switched
off
Brake
pedal not
depressed
0.0 - 0.5 V - Check brake light
switch -F- and read
measured value
block Page 01-
240 , Display group
number 003

- Depress
brake pedal Approx.
battery
voltage
Repair Manual,
Brake System,
Repair Group 46;
Brake pedal -
Assembly overview;
Adjusting brake light
switch
Electrical Wiring
Diagrams,
Troubleshooting &
Component
Locations binder - Adjusting brake
light switch
- Check wiring using
wiring diagram
Стр. 14из 38 Electrical check of Mark 60

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Switch to measuring range:
Resistance measurement (2 k )
Test
step V.A.G
1598
sockets Item tested Test
conditions
- Additional
operations Specification
Measures for
deviations from
specification
5 33 + 34 Resistance of
right front ABS
wheel speed
sensor -G45-
Ignition
switched
off 1.0 - 1.3 k
Electrical Wiring
Diagrams,
Troubleshooting &
Component Locations
binder
If no malfunction can be
located in the wiring:
Repair Manual, Brake
System, Repair Group
45; Removing and
installing parts of ABS
system on front and rear
axles - Check wiring using
wiring diagram
- Wiggle wiring during
test
- Replace right front
ABS wheel speed
sensor -G45-
Стр. 15из 38 Electrical check of Mark 60

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Switch to measuring range:
Resistance measurement (2 k )
Test
step V.A.G
1598
sockets Item tested Test
conditions
- Additional
operations Specification
Measures for
deviations from
specification
6 45 + 46 Resistance of
left front ABS
wheel speed
sensor -G47-
Ignition
switched
off 1.0 - 1.3 k
Electrical Wiring
Diagrams,
Troubleshooting &
Component Locations
binder
If no malfunction can be
located in the wiring:
Repair Manual, Brake
System, Repair Group
45; Removing and
installing parts of ABS
system on front and rear
axles - Check wiring using
wiring diagram
- Wiggle wiring during
test
- Replace left front ABS
wheel speed sensor -
G47-
Стр. 16из 38 Electrical check of Mark 60

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Switch to measuring range:
Resistance measurement (2 k )
Test
step V.A.G
1598
sockets Item tested Test
conditions
- Additional
operations Specification
Measures for
deviations from
specification
7 42 + 43 Resistance of
right rear ABS
wheel speed
sensor -G44-
Ignition
switched
off 1.0 - 1.3 k
Electrical Wiring
Diagrams,
Troubleshooting &
Component Locations
binder
If no malfunction can be
located in the wiring:
Repair Manual, Brake
System, Repair Group
45; Removing and
installing parts of ABS
system on front and rear
axles - Check wiring using
wiring diagram
- Wiggle wiring during
test
- Replace right rear ABS
wheel speed sensor -
G44-
Стр. 17из 38 Electrical check of Mark 60

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Switch to measuring range:
Resistance measurement (2 k )
Test
step V.A.G
1598
sockets Item tested Test
conditions
- Additional
operations Specification
Measures for
deviations from
specification
8 37 + 36 Resistance of
left rear ABS
wheel speed
sensor -G46-
Ignition
switched
off 1.0 - 1.3 k
Electrical Wiring
Diagrams,
Troubleshooting &
Component Locations
binder
If no malfunction can be
located in the wiring:
Repair Manual, Brake
System, Repair Group
45; Removing and
installing parts of ABS
system on front and rear
axles - Check wiring using
wiring diagram
- Wiggle wiring during
test
- Replace left rear ABS
wheel speed sensor -
G46-
Стр. 18из 38 Electrical check of Mark 60