Volkswagen New Beetle. Manual - part 772

 

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Volkswagen New Beetle. Manual - part 772

 

 

VOLTAGE TEST - SWITCH TO 20V DC MEASURING RANGE 

NOTE:

z

The socket designations of adapter VAG1598/21 are identical to ABS 
control module (w/EDL) -J104- terminal designations in the wiring diagram. 

z

If the readings obtained deviate from the specifications, carry out 
"corrective action" measures in the right side of the table.  

z

Use only the VW1594A connector test kit to check continuity (bridging).  

z

If the measured figures only differ slightly from the specifications, clean 
the sockets and harness connectors of the testers and adapter leads 
(using contact spray G 000 700 04 ) and repeat the check. Before replacing 
components, check the wiring and connections again, particularly if the 
specification calls for a resistance reading of less than 10 ohms.  

Voltage test - switch to 20V DC measuring range

Test 
step

VAG1598 

sockets

Test of

z

Test 

conditions  

z

Additional 

operations  

Specified

value

Corrective action

1

8 + 25

Voltage supply for 

pump motor (terminal 

30) on ABS control 

module (w/EDL) -J104-

z

Ignition off   10.0-14.5 

V

z

Check wire from 

terminal 25 to Ground 

(GND) 

z

Check wire from 

terminal 8 via fuse -

S178- to B+. 

2

9 + 24

Voltage supply for 

pump motor (terminal 

30) on ABS control 

module (w/EDL) -J104-

z

Ignition off   10.0-14.5 

V

z

Check wire from 

terminal 9 to Ground 

(GND). 

z

Check wire from 

terminal 24 via fuse -

S179- to B+. 

3

8 + 4

Voltage supply (terminal 

X) on control module

z

Ignition on   10.0-14.5 

V

z

Check wire from 

terminal 4 via fuse -

S9- and ignition 

switch to Ground 

(GND). 

z

Check wire from 

terminal 8 to B+. 

4

8 + 18

Function of brake light 

switch -F-

z

Ignition off  

z

Brake pedal 

not depressed 

0.0-0.5 V

z

Check fuse -S13- and 

brake light switch -F-. 

z

Check wire from 

terminal 18 to Ground 

(GND). 

 

2003 Volkswagen New Beetle GLS 

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

  

RESISTANCE TEST - SWITCH TO 2 K ohm MEASURING RANGE 

RESISTANCE MEASUREMENT (2 ohm) 

 

 

 

z

Depress brake 

pedal.  

10.0-14.5 

V

z

Check wire from 

terminal 18 to Ground 

(GND). 

Resistance test - switch to 2 k ohm measuring range

Test 
step

VAG1598 

sockets

Test of

z

Test 

conditions  

z

Additional 

operations  

Specified

value

Corrective action

5

19 + 20

Right front ABS 

wheel speed sensor -

G45- resistance

z

Ignition off  

1.0-1.3 

Kohm

z

Check harness 

connector T2b. 

z

Check resistance of 

wheel speed sensor (1.0 

- 1.3 kohm). 

z

Check wire to wheel 

speed sensor. 

z

Move wire while testing 

(loose connection). 

Switch to measuring range: 
Resistance measurement (2 ohm)

Test 
step

V.A.G 

1598 

sockets

Item tested

z

Test 

conditions  

z

Additional 

operations 

Specified 

value

Corrective action

6

1 +2

Resistance of 

left front ABS 

wheel speed 

sensor -G47-

z

Ignition 

switched off 

1.0 to 1.3 

Kohm

z

Separate connector on speed 

sensor -G47 

 

 

 

 

 

z

Check wiring using wiring 

diagram 

 

 

 

 

 

z

Wiggle wiring during test 

 

 

 

 

 

If no malfunction can be located in the 

wiring:

 

 

 

 

 

z

Replace left front ABS wheel 

speed sensor -G47-

 

 

 

 

 

See ABS SYSTEM COMPONENTS 

FOR FRONT AXLE, REMOVING 

 

2003 Volkswagen New Beetle GLS 

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

  

VOLTAGE TEST - SWITCH TO 2V AC MEASURING RANGE 

AND INSTALLING or ABS 

SYSTEM COMPONENTS ON 

REAR AXLE, REMOVING AND 

INSTALLING .

7

22 + 23

Resistance of 

right rear ABS 

wheel speed 

sensor -G44-

z

Ignition 

switched off 

1.0 to 1.3 

Kohm

z

Separate connector on right rear 

ABS wheel speed sensor -G44-

 

 

 

 

 

z

Check wiring using wiring 

diagram 

 

 

 

 

 

z

Wiggle wiring during test 

 

 

 

 

 

If no malfunction can be located in the 

wiring:

 

 

 

 

 

z

Replace right rear ABS wheel 

speed sensor -G44-

 

 

 

 

 

See ABS SYSTEM COMPONENTS 

FOR FRONT AXLE, REMOVING 

AND INSTALLING or ABS 

SYSTEM COMPONENTS ON 

REAR AXLE, REMOVING AND 

INSTALLING .

8

5 + 6

Resistance of 
left rear ABS 

wheel speed 

sensor -G46-

z

Ignition 

switched off 

1.0 to 1.3 

K ohm

z

Separate connector on speed 

sensor -G46 

 

 

 

 

 

z

Check wiring using wiring 

diagram 

 

 

 

 

 

z

Wiggle wiring during test 

 

 

 

 

 

If no malfunction can be located in the 

wiring:

 

 

 

 

 

z

Replace left rear ABS wheel 

speed sensor -G46-

 

 

 

 

 

See ABS SYSTEM COMPONENTS 

FOR FRONT AXLE, REMOVING 

AND INSTALLING or ABS 

SYSTEM COMPONENTS ON 

REAR AXLE, REMOVING AND 

INSTALLING .

Voltage test - switch to 2V AC measuring range

z

Test 

conditions  

 

2003 Volkswagen New Beetle GLS 

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

  

Test 
step

VAG1598 

sockets

Test of

z

Additional 

operations  

Specified

value

Corrective action

9

19 + 20

Right front 

ABS wheel 

speed sensor 

-G45- 

voltage 

signal

z

Vehicle raised 

z

Ignition off  

 

z

Check installation of wheel 

speed sensor and rotor. 

 

 

 

z

Rotate right-

front wheel at 

approx. 1 

rev./sec.  

65 mV AC 

minimum

z

Check whether wheel speed 

sensor has been interchanged, 

see Read Measuring Value 

Block, see READ 

MEASURING VALUE 

BLOCK (FUNCTION 08) 

display group 001. 

10

1 +2

Left front 

ABS wheel 

speed sensor 

-G47- 

voltage 

signal

z

Vehicle raised 

z

Ignition off  

 

z

Check installation of wheel 

speed sensor and rotor. 

 

 

 

z

Rotate left-

front wheel at 

approx. 1 

rev./sec.  

65 mV AC 

minimum

z

Check whether wheel speed 

sensor has been interchanged, 

see Read Measuring Value 

Block, see READ 

MEASURING VALUE 

BLOCK (FUNCTION 08) 

display group 001. 

11

22 + 23

Right rear 

ABS wheel 

speed sensor 

-G44- 

voltage 

signal

z

Vehicle raised 

z

Ignition off  

 

z

Check installation of wheel 

speed sensor and rotor. 

 

 

 

z

Rotate right-

rear wheel at 

approx. 1 

rev./sec.  

190 mV AC 

minimum

z

Check whether wheel speed 

sensor has been interchanged, 

see Read Measuring Value 

Block, see READ 

MEASURING VALUE 

BLOCK (FUNCTION 08) 

display group 001. 

12

6 + 5

Left rear 

ABS wheel 

speed sensor 

-G46- 

z

Vehicle raised 

z

Ignition off  

 

z

Check installation of wheel 

speed sensor and rotor. 

 

2003 Volkswagen New Beetle GLS 

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

  

 

 

 

 

 

 

 

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