1998 VOLKSWAGEN JETTA ESP

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8 -
ABS warning
light -K47-

Location:
instrument
cluster
Function:
Page 01
-17
9 -
Warning light
for brake
system -K118-

Location:
instrument
cluster
Function:
Page 01
-17
10 -
ESP control
lamp -K155-

Location:
instrument
cluster
Стр. 6из 14 Electrical/electronic components and locations

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V.A.G 1551
print-out Possible cause
Repair
No DTC
recognized If "No DTC recognized" appears after carrying out repairs, On Board
Diagnostic (OBD) is ended.
If, despite "No DTC recognized" appearing in the display, the ABS system
does not function properly, then proceed as follows:
1. Carry out road test exceeding 20 km/h (13 mph),
2. Again check DTC memory, if there is still no DTC stored,
3. Continue troubleshooting without OBD and work through the complete
Electrical check Page 01
-102 .
Стр. 16из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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Read measured value block
3 Display group number: 003
0
Indicated on display

Vacant

Vacant

Vacant

Brake light switch:
If despite pressed foot brake a -0-, or not pressed foot brake a -1- is displayed on the
V.A.G 1551 display; perform test step No. 4 of Electrical check, Page 01
-102 .
There is also a possibility that the brake light switch has not been correctly adjusted.
Adjusting brake light switch, Page 01
-131 .
0 Brake pedal not depressed
1 Brake pedal depressed
Стр. 51из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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-
Press key.
Output Diagnostic Test Mode
-
Release brakes
Indicated on display
- Remove foot from brake pedal.
-
Press key.
Output Diagnostic Test Mode
-
EDL valves/Hyd-P: VBAT Wh FL/FR locked
Indicated on display (vehicles with EDL)
Note:
A 2nd mechanic is required to rotate the
respective wheel by hand.
If the wheels do not lock, there is a
malfunction in the hydraulic part of the ABS
system. In this case the hydraulic unit must
be replaced.
Repair Manual, Brake System, Repair
Group 45; Hydraulic unit, brake
booster/brake master cylinder - Assembly
overview; Removing and installing control
module and hydraulic unit
Стр. 69из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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Contact
Wiring connection to component ...
13
Longitudinal acceleration sensor -G251-(all-wheel drive vehicles with Haldex
coupling only)
14
Coding bridge to contact 3
15
Longitudinal acceleration sensor -G251-(four-wheel drive vehicles with Haldex
coupling only)
15
ESP Control lamp -K155- activation (vehicles with ABS/EDL/ASR only)
16
ABS warning light -K47- activation
17
Longitudinal acceleration sensor -G251-(four-wheel drive vehicles with Haldex
coupling only)
18
Brake light switch -F-
19
Right front ABS wheel speed sensor -G45-
20
Right front ABS wheel speed sensor -G45-
21
Vehicles with navigation system only
22
Right rear ABS wheel speed sensor -G44-
23
Right rear ABS wheel speed sensor -G44-
24
Ground point left in engine compartment and Ground connection in engine
compartment wiring harness
25
Voltage supply from battery +
Стр. 7из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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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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Functional check: ESP Control lamp -K155
Test
step V.A.G
1598
sockets Item
tested
Test
conditions
- Additional
operations Specification
Measures for
deviations from
specification
21 - Function of
ESP
Control
lamp -
K155-
Switch
ignition on ESP Control lamp -
K155- lights up for 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. 29из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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ABS Mark 60 On Board
Diagnostic (OBD), vehicles
from my 10.00
There are four versions of the ABS Mark 60.

ABS

ABS/EDL/ASR

ABS/EDL/ASR/ESP with front wheel drive

ABS/EDL/ASR/ESP with 4MOTION
Each version has its own control module. The
control modules can be coded accordingly
through coding bridges via tester VAS 5051 or
V.A.G 1551.
The ESP (Electronic Stabilization Program) is
an electronic dynamics Program (EDP). It
stabilizes the vehicle when oversteering or
understeering. The ESP works over the whole
speed range. If the ESP is regulating the
system the ESP warning lamp will flash 3 times
per second.

The ESP is a further extension of the
familiar vehicle safety systems.
ESP increases control over the vehicle in
critical situations. It reduces the danger of
skidding and increases the steering control
when compared with familiar vehicle safety
systems.
Стр. 1из 10 ABS Mark 60 On Board Diagnostic (OBD), vehicles from my 10.00