1998 VOLKSWAGEN JETTA Service Manual

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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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Component to be tested

Voltage signal of left rear ABS wheel speed sensor -G46-
- Perform test step 12
Warning lamp function for ABS warning light -K47-
- Perform test step 13
Warning lamp function for warning light for brake system -K118-
- Perform test step 14
Warning lamp function for ESP control lamp -K155-
- Perform test step 15
Function of ASR/ESP button -E256-
- Perform test step 16
Activation of steering angle sensor -G85-
- Perform test step 17
Activation of sensor for transverse acceleration -G200-
Activation of sender for rotation rate -G202- - Perform test step 18
Activation of sender 1 for brake booster -G201-
- Perform test step 19
Check of data bus wiring
- Perform test step 20
Voltage supply for V.A.G 1551, connector T16
- Perform test step 21
Resistance of K wire for self-diagnosis, connector T16
- Perform test step 22
Coding bridge
- Perform test step 23
Стр. 11из 38 Electrical check of Mark 60

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Test table (test steps 1 - 16)
Test steps 17 - 23 see Page 01
-313
Note on test table

The socket designations of adapter V.A.G 1598/33 are identical to the ABS control module
(w/EDL) -J104- contact designations in wiring diagram.
Electrical Wiring Diagrams, Troubleshooting & Component Locations binder
If the readings obtained deviate from the specifications, carry out repair measure in the
right-hand part of the table.
Electrical Wiring Diagrams, Troubleshooting & Component Locations binder
Continuity checks with adapter set V.A.G 1594 A (bridging).

If the measured figures only deviate slightly from the specifications, clean sockets and plugs
of the testers and adapter cables (with contact spray G 000 700 04 ) and repeat check.
Before replacing components, check wiring and connections and also, particularly for
specifications of less than 10 , repeat resistance check on the component.
Стр. 12из 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