Page 155 of 339
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Repair Manual,
Brake System, Repair
Group 45; Removing
and installing parts of
ESP system 8 -
Brake booster
9 -
Steering angle
sensor -G85-
Vehicles with
ABS/EDL/ASR/ESP
only
Location: On
steering
column
between
steering wheel
and steering
column switch.
Checked by
OBD
Can be
checked via
read
measured
value block
Page 01
-240
Observe
installation
instructions
When the
steering angle
sensor -G85-
is replaced, a
zero
compensation
must be
performed
Introduce
basic setting
Page 01
-
264 , perform
display group
number 060
Стр. 10из 17 Electrical/electronic components and installing locations
Page 156 of 339
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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
Page 164 of 339

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ABS warning light -K47-
Electrical Wiring Diagrams,
Troubleshooting & Component Locations
binder
If the ABS warning light -K47- -1- does
not go out after switching ignition on and
completion of test sequence then the
malfunction may be:
-a- Voltage supply is below 10 Volt
-b- There is a malfunction in the ABS
The anti-locking brake system remains
switched off with an ABS malfunction -b-,
but the brake system remains fully
operational.
-c- Since the last time the vehicle was
started there was a temporary speed
sensor malfunction.
In the case of a sensor malfunction -c-,
the ABS warning light -K47- will
extinguish after restarting the engine and
attaining a speed of above 20 km/h
(approx. 13 mph).
-d- The connection from instrument
cluster to ABS Control Module (w/EDL) -
J104- is interrupted (open circuit).
-e- Instrument cluster is faulty.
Стр. 2из 4 Diagnostic Trouble Codes (DTCs) displayed by warning lights -K47-, -K118- and -K155-
Page 165 of 339
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Warning lights -K47- and -K118-
Electrical Wiring Diagrams,
Troubleshooting & Component Locations
binder
WARNING!
After the ABS warning light -K47- and
warning light for brake system -K118-
have illuminated, it is possible that the
rear wheels will lock-up earlier when
braking.
If the ABS warning light -K47- -1- goes
out but the warning light for brake
system -K118- -2- remains on, then the
malfunction may be:
-a- The parking brake is applied.
-b- There is a malfunction in the
activation of the warning light for brake
system -K118-.
-c- The brake fluid level is too low.
If the ABS warning light -K47- -1- and
the warning light for brake system -
K118- -2- illuminate, the ABS system is
faulty and the EBD (Electronic brake
pressure distribution) is not functioning.
Стр. 3из 4 Diagnostic Trouble Codes (DTCs) displayed by warning lights -K47-, -K118- and -K155-
Page 176 of 339
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List of selectable functions
Page
00
- Automatic test sequence Page
01-169
01
- Check control module version
Connecting V.A.G 1551 scan
tool and selecting function Page
01-163
01
- Check control module version
Connecting tester VAS 5051 and
selecting function Page
01-31
02
- Check Diagnostic Trouble Code
(DTC) memory Page
01-170
03
- Output Diagnostic Test Mode
(DTM) Page
01-74
04
- Initiate basic setting Page
01-264
05
- Erase DTC memory Page
01-230
06
- End output Page
01-230
07
- Code control module Page
01-232
08
- Read measured value block Page
01-240
11
- Login procedure Page
01-287
Стр. 10из 129 On Board Diagnostic (OBD), performing
Page 180 of 339

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Output Diagnosic Test Mode (DTM)
Note:
All functions which could previously be
performed with V.A.G 1551 can now also be
carried out with the tester VAS 5051.
The pump motor and the correct functioning of
the hydraulic circuits (allocation of brake lines to
wheel cylinders and function of valves) can be
checked via the output DTM for interchange or
leaks.
The vehicle must be raised until all wheels are
free to turn. (2nd mechanic required to rotate
wheels)
The -C- key can be used to exit the test
sequence at any time.
After depressing the brake pedal several times
the vacuum in the brake booster will be
exhausted. Therefore more pressure must be
applied to the brake pedal in order to attain the
same fluid pressure in brake system, as that
attained with vacuum.
When vacuum in brake booster is exhausted it
can happen that the wheels do not lock; start
engine and build-up vacuum in brake booster.
Стр. 14из 129 On Board Diagnostic (OBD), performing
Page 181 of 339
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Example:
Indicated on V.A.G 1551 display during Output
DTM:
(e.g. front left wheel, FL)
Output Diagnosic Test Mode -
IFL: VBAT OFL: 0V Wheel FL locked
IFL = Inlet valve Front Left
VBAT = Voltage Battery; Voltage at valve
OFL = Outlet valve Front Left
0V = 0 Volt; No voltage at valve
Locked/free = Wheel condition; must be
checked by 2nd mechanic if required
Output Diagnosic Test Mode -
EDL valves/Hyd-P: VBAT Wheel FL/FR
locked
Hydr-P = Hydraulic pump
Стр. 15из 129 On Board Diagnostic (OBD), performing
Page 183 of 339
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Rapid data transfer HELP
Select function XX Indicated on display
- Press keys 0 and 3
Rapid data transfer Q
03 - Out
put Diagnosic Test Mode
Indicated on display
ABS hydraulic pump -V64- must run. - Confirm entry with key Q.
Output Diagnosic Test Mode
-
ABS hydraulic pump - V64
Indicated on display
-
Press key.
Output Diagnosic Test Mode
-
Operate brakes
Indicated on display
- Operate brake pedal.
-
Press key.
Output Diagnosic Test Mode
-
IFL: 0V OFL: 0V Wheel FL locked
Indicated on display
Note:
If the wheel does not lock, there is a
possibility that there is a malfunction in the
mechanical/hydraulic part of the brake
system. - Indicate to 2nd mechanic which wheel
requires turning by hand.
Стр. 17из 129 On Board Diagnostic (OBD), performing