brake light VOLKSWAGEN BORA 1998 Owner's Manual

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To test component

Voltage signal of right rear ABS wheel speed sensor -G44-
- Perform test step 11
Voltage signal of rear left ABS wheel speed sensor -G46-
- Perform test step 12
Coding bridge
- Perform test step 13
Voltage supply for V.A.G 1551, T16 connector
- Perform test step 14
Resistance of K wire for On Board Diagnostic (OBD), T16 connector
- Perform test step 15
Function of ABS warning light -K47-
- Perform test step 16
Function of warning light for brake system -K118-
- Perform test step 17
Function of ABS hydraulic pump -V64-
- Perform test step 18
Check of data bus wiring
- Perform test step 19
Activation of longitudinal acceleration sensor -G251-
1)
- Perform test step 20
Function of ESP Control lamp -K155-
- Perform test step 21
1) All-wheel drive vehicles with Haldex coupling only.
Стр. 9из 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
3 8 + 4 Voltage supply
(terminal X) to
ABS Control
Module
(w/EDL) -
J104-
Ignition
switched on10.0 to 14.5 V
Electrical Wiring
Diagrams,
Troubleshooting &
Component Locations
binder - Check wire using
wiring diagram
4 8 + 18 Function of
brake light
switch -F- Ignition
switched off
Brake pedal
not
depressed
0.0 to 0.5 V
Electrical Wiring
Diagrams,
Troubleshooting &
Component Locations
binder - Check brake light
switch -F- and Read
measured value
block, display group
003
- Check wiring using
wiring diagram

- Press brake
pedal approx. battery
voltage - Checking brake light
switch -F- Page 01
-
131
Стр. 12из 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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Brake light switch, adjusting

Vehicle up to my 02.00
Repair Manual, Brake System, Repair
Group 46; Installing brake light switch
Remove brake light switch to adjust.

- Disconnect connector from brake light
switch.
- Remove brake light switch by turning to
left through 90 .
- Pull brake light switch plunger fully out.
- Press brake pedal down as far as
possible by hand.
- Guide brake light switch through
assembly opening and reinstall by
turning 90 to right.
- Release brake pedal.
- Connect brake light switch connector.
- Install driver's side stowage tray if
necessary.
- Operate brake pedal.
Brake lights light up.
- Take foot off brake pedal.
Brake lights do not light up.
Стр. 30из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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Vehicle from my 03.00

- Pull out brake light switch plunger to full
extension.

- Keep brake pedal in up position (IMPORTANT!
hold pedal up if necessary while installing
switch).

- Guide switch through mounting hole (only fits in
one position).

- Seat switch fully into opening (pressing plunger
against pedal to adjust.

-
Seat switch by turning it 45 clockwise. This
action also turns the plunger shoe into the
correct orientation to make electrical contracts in
switch operate as well as locks in plunger
adjustment.

- Connect brake light switch connector.

- Operate brake pedal to verify proper function.

- Reinstall lower cover panel.
Стр. 31из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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Safety precautions and fundamental
points regarding troubleshooting


Note:

The ABS is a vehicle safety system; the
appropriate knowledge is necessary to work on
the system.

In order to check complaints and to be able to
carry out pin-pointed troubleshooting, the
Diagnostic Trouble Code (DTC) memory must
be checked before commencing work on the
ABS system.

Only separate connectors when the ignition is
switched off.

Observe the appropriate instructions regarding
the handling of brake fluid.
Repair Manual, Brake System, Repair Group
47
ABS malfunctions are indicated by the ABS
warning light illuminating. Certain malfunctions
will only be recognized at speeds above 20
km/h (approx. 13 mph) (carry out road test).

If the ABS -K47- and the brake system -K118-
warning lights do not illuminate, but the brake
system is not functioning correctly then the
malfunction must be sought in the conventional
braking system.
Repair Manual, Brake System, Repair Group
45
Стр. 7из 10 ABS Mark 60 On Board Diagnostic (OBD), vehicles from my 10.00

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Repair Manual,
Brake System,
Repair Group 47;
Brake system
vacuum pump -V192
Repair Manual,
Brake System,
Repair Group 47;
Brake system
vacuum pump -V192
Repair Manual,
Brake System,
Repair Group 46;
10 -
Brake system
vacuum pump
-V192-

Not installed
in all
vehicles

Location: left
of subframe

Checked by
OBD in
engine
control
module

Removing
and installing
Checking
11 -
Brake light
switch -F-

The brake
light switch is
open in the
rest position;

Can be
checked via
read
measured
value block
Page 01
-
240
Adjusting
Стр. 11из 17 Electrical/electronic components and installing locations

Downloaded from www.Manualslib.com manuals search engine Brake pedal -
Assembly overview;
Adjusting brake light
switch
Стр. 12из 17 Electrical/electronic components and installing locations

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12 -
Data Link
Connector
(DLC)

Location: In
center console
below
heating/air
conditioning
controls
module
13 -
Button for
ASR/ESP -
E256-

Vehicles with
ABS/EDL/ASR/ESP
only
14 -
ABS warning
light -K47-

Location: In
the instrument
cluster
Function:
Page 01
-155
15 -
Warning light
for brake
system -K118-

Location: In
the instrument
cluster
Function:
Page 01
-155
16 -
ASR/ESP
Control Lamp -
K155-

Location: In
the instrument
cluster
Function:
Page 01
-155
Стр. 13из 17 Electrical/electronic components and installing locations

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Diagnostic Trouble Codes
(DTCs) displayed by
warning lights -K47-, -K118-
and -K155-
Warning lamps
Item
Designation
1 ABS warning light -K47-
2 Warning light for brake system -
K118-
3 ASR/ESP Control Lamp -K155-
Стр. 1из 4 Diagnostic Trouble Codes (DTCs) displayed by warning lights -K47-, -K118- and -K155-