Volkswagen New Beetle. Manual - part 771

 

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Volkswagen New Beetle. Manual - part 771

 

 

Fig. 142: Releasing Control Module Harness Connector 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Pull multi-pin harness connector off ABS control module (w/EDL) -J104- and connect 
VAG1598/21 test box (-1-) to harness connector -2-.  

Fig. 143: Pulling Multi-Pin Harness Connector Off ABS Control Module (W/EDL) -J104- And 
Connecting VAG1598/21 Test Box To Harness Connector
 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

The specified values are matched to the multimeter (Fluke 83 or equivalent) and are not necessarily applicable 
for other test units. 

MULTI-PIN HARNESS CONNECTOR WITH TERMINAL ASSIGNMENT 

NOTE:

All terminals not listed are currently not assigned and must never be connected 
to other components!

 

2003 Volkswagen New Beetle GLS 

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

  

Fig. 144: Identifying Data Link Connector Terminals For Voltage Supply 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Data Link Connector (DLC) for voltage supply and On Board Diagnostic (OBD) with the VAG1551 Scan Tool (ST) 
terminal assignment 

Terminal 4 = Ground (terminal 31) 

Terminal 16 = Positive (terminal 30) via -S12- 

Terminal 7 = K-wire via connection in instrument panel wiring harness to ABS control module (w/EDL) -J104- 
terminal 7 

T25 harness connector and ABS control module (w/EDL) -J104- terminal assignment 

Fig. 145: Identifying T25 Harness Connector And ABS Control Module (W/EDL) -J104- Terminal 
Assignment
 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

CAN-bus control diagram 

 

2003 Volkswagen New Beetle GLS 

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

  

1. Automatic Transmission Control Module (TCM)  

2. Bus driver 3-ECM  

3. Bus-driver  

4. Terminating impedance  

5. CAN-bus  

6. Terminating impedance  

7. Bus driver  

8. ABS control module (w/EDL) -J104-  

Fig. 146: CAN-Bus Control Diagram 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

MULTIPIN HARNESS CONNECTORS TERMINALS CONNECTION - T25 HARNESS 
CONNECTOR AND ABS CONTROL MODULE (W/EDL)
 

NOTE:

The following list refers to items in Fig. 146 .

Terminal Connected to...
1

Left-front ABS wheel speed sensor -G47-

2

Left-front ABS wheel speed sensor -G47-

3

Coding bridge to terminal 14

4

Voltage supply terminal X

5

Left-rear ABS wheel speed sensor -G46-

6

Left-rear ABS wheel speed sensor -G46-

7

T16/7 harness connector, K wire

8

Ground (GND) point at left side of engine compartment and Ground (GND) connection in 

engine compartment wiring harness

9

B+ via -S179-

10

CAN-bus wire

1)

 wiring diagrams

11

CAN-bus wire

1)

 wiring diagrams

 

2003 Volkswagen New Beetle GLS 

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

  

Test step overview 

TEST STEP OVERVIEW 

ELECTRICAL TEST TABLE 

12

not used

14

Coding bridge to terminal 3

15

not used

16

ABS warning lamp activation

18

Brake light switch -F-

19

Right-front ABS wheel speed sensor -G45-

20

Right-front ABS wheel speed sensor -G45-

21

not used

22

Right-rear ABS wheel speed sensor -G44-

23

Right-rear ABS wheel speed sensor -G44-

24

Ground (GND) point at left side of engine compartment and Ground (GND) connection in 

engine compartment wiring harness

25

B+ via -S178-

Voltage supply for pump motor (terminal 30) on ABS control module -J104-

Test step 1

Voltage supply for valves (terminal 30) on ABS control module -J104-

Test step 2

Voltage supply (terminal X) on control module

Test step 3

Function of brake light switch -F-

Test step 4

Right-front ABS wheel speed sensor -G45- resistance

Test step 5

Left-front ABS wheel speed sensor -G47- resistance

Test step 6

Right-rear ABS wheel speed sensor -G44- resistance

Test step 7

Left-rear ABS wheel speed sensor -G46- resistance

Test step 8

Right-front ABS wheel speed sensor -G45- voltage signal

Test step 9

Left-front ABS wheel speed sensor -G47- voltage signal

Test step 10

Right-rear ABS wheel speed sensor -G44- voltage signal

Test step 11

Left-rear ABS wheel speed sensor -G46- voltage signal

Test step 12

Coding bridge

Test step 13

Voltage supply for VAG 1551, T16 harness connector

Test step 14

Resistance of K wire for On Board Diagnostic (OBD), harness connector T16

Test step 15

Warning lamp function for ABS -K47-

Test step 16

Hydraulic pump -V64- function

Test step 17

CAN-bus wire (resistance)

Test step 18

CAN-bus wire (short circuit to B+)

Test step 19

Longitudinal acceleration sensor -G251- wiring

Test step 20

Function of warning light for brake system -K118-

Test step 21

Function of ASR control lamp -K155-

Test step 22

 

2003 Volkswagen New Beetle GLS 

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

  

 

 

 

 

 

 

 

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