Volkswagen New Beetle. Manual - part 809

 

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Volkswagen New Beetle. Manual - part 809

 

 

RESISTANCE MEASUREMENT (200 ohm) 

RESISTANCE MEASUREMENT (200 ohm) 

ADJUSTING BRAKE LIGHT SWITCH 

K-wire for 

V.A.G 1551, 

connector 

T16

1)

z

Disconnect multi-pin connector 

from ABS control module 

(w/EDL) -J104-.  

wiring 

using 

wiring 

diagram 

 

 

 

 

z

Connect test box V.A.G 1598/36 

 

 

 

 

 

z

Connect hand multimeter V.A.G 

1526 to contacts T16/7

1)

 and 

T47/2

2)

 of multi-pin connector 

from ABS control module 

(w/EDL) -J104- using cables from 

auxiliary test set V.A.G 1594  

 

 

(1)

Contact assignment for diagnosis connector, see MULTI-PIN CONNECTOR WITH CONTACT 
ASSIGNMENTS
 .

(2)

Contact assignment for control module connector, see MULTI-PIN CONNECTOR WITH 
CONTACT ASSIGNMENTS
 .

Switch to measuring range: 
Resistance measurement (200 ohm)
Test 
step

V.A.G 

1598 

sockets

Item tested

z

Test conditions 

{

Additional 

operations  

Specification

Measures for 

deviations from 

specification

23

12 + 38

Coding bridge for 

ABS/EDL/ASR/ESP

z

Ignition switched 

off  

0.0 - 1.0 

ohm

z

Check wiring 

using wiring 

diagram. 

Switch to measuring range: 
Resistance measurement (200 ohm)
Test 
step

V.A.G 

1598 

sockets

Item tested

z

Test conditions 

{

Additional 

operations  

Specification

Measures for deviations 

from specification

24

14 + 38

Coding 

bridge for 

ABS

z

Ignition switched off 

0.0 - 1.0 

ohm

z

Check wiring referring 

to current flow 

diagram. 

 

2003 Volkswagen New Beetle GLS 

1998-2004 BRAKES On Board Diagnostic (OBD) - New Beetle

  

z

Disconnect connector off brake light switch.  

z

Remove brake light switch by turning 45° to the left.  

z

Before installing, pull plunger fully out.  

z

Guide brake light switch through assembly opening and reinstall by pressing against the pedal and turning 
45° to the right. 

Brake pedal always remains in rest position. 

z

Install brake light switch connector.  

z

Check function of brake light.  

After adjusting brake light switch, make sure the brake pedal is in the end stop position (released 
position).
 

Fig. 289: Removing Brake Light Switch By Turning 45° To Left 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

DEFINITIONS 

These explanations concern this assembly group: Self-diagnosis for ABS. These definitions are not necessarily 
generally valid. 

ABS/EDL/ASR/ESP 

Anti-lock braking system, electronic differential lock, traction control system, electronic stability program. 

Display group number, see Read measured value block 

ASR (Traction control system) 

NOTE:

Remove brake light switch to adjust.

 

2003 Volkswagen New Beetle GLS 

1998-2004 BRAKES On Board Diagnostic (OBD) - New Beetle

  

Further information on this can be found in the appropriate Self-study program No. 115. 

Booster 

Brake servo 

Data bus 

Transportation of data. To do this the electrical signals are brought into a certain format (BUS). Further 
information on this can be found in Self-study programs No.180 and 186. 

Data bus low (high) 

The voltage used to transport the data is low (high). Further information on this can be found in self-study 
program no. 186. 

Speed sensor 

Sends speed signals to control module. 

EBD 

Electronic brake pressure distribution 

Forget-malfunction counter 

When a fault gets in the memory fault counter, after 50 vehicle starts, and this fault is not repeated again, the 
memory counter erases the fault. 

Self-diagnosis 

The capability of the control module: 

z

Recognise Diagnostic Trouble Codes (DTCs),  

z

React to DTCs,  

z

Store DTCs,  

and make them available in the measured value block. Further information on this can be found in Self-study 
program and test module instruction manual. 

Performing self-diagnosis 

Connecting the Scan Tool to be able to check the DTC memory. Further information on this can be found in 
Self-study program and test module instruction manual. 

Performing electrical check 

 

2003 Volkswagen New Beetle GLS 

1998-2004 BRAKES On Board Diagnostic (OBD) - New Beetle

  

A targeted check of the electronic components by performing certain measurements. 

ESP 

Electronic stabilization program 

ESP-Sensor Unit -G419-, vehicles from m.y. 12.01 

The sensor for transverse acceleration -G200-, and the sender for rotation rate -G202- are assembled together in 
a housing. 

Sender 1 for brake booster/sensor -2- for brake pressure -G201/-G214- 

Registers the pressure exerted by the driver and is required to control the pressure of the pre-charge pressure 
(booster). 

Sender for rotation rate -G202- 

Registers the rotational movement of the vehicle along the vertical axis relative to the speed of the vehicle. 

Steering angle sensor -G85- 

Used to determine the direction the driver desires. Data transfer to control module is via the data bus wiring. 

Sensor for transverse acceleration -G200- 

Used to register the speed through curves/bends and which side should be braked using the ESP. 

No communication 

There is no connection for exchanging information between the control modules. Further information on this 
can be found in Self-study program No. 180. 

Short to ground 

Current flows -incorrectly- to ground without supplying a consumer. 

Short to positive 

Current flows -incorrectly- to a live component without supplying a consumer. 

Trip switch 

The trip switch is located in the brake booster and is used by the control module to determine the braking 
desired by the driver which then leads to the switch-off of the brake pressure (booster) solenoid valve. 

Magnetic coil for brake pressure, in brake booster -N247- 

 

2003 Volkswagen New Beetle GLS 

1998-2004 BRAKES On Board Diagnostic (OBD) - New Beetle

  

 

 

 

 

 

 

 

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