Volkswagen New Beetle. Manual - part 315

The control unit detects malfunctions in the central locking system and stores them in a permanent memory.

To operate Guided Fault Finding, initiate On Board Diagnosis (OBD) and retrieve the stored information with 
the scan tool V.A.G 1551. 

System tester V.A.G 1552 may also be used. 

All functions which could previously be performed with V.A.G 1551/1552 can also be performed with the new 
tester VAS 5051 in the operating mode vehicle On Board Diagnosis (OBD): 

See Operating instructions for Vehicle Diagnosis, Testing and Information System VAS 5051. 

The malfunction information displayed is used to refer to a Diagnostic Trouble Code (DTC) table with notes on 
the possible malfunction causes for directed repair measures. 

Malfunctions which can be attributed to a temporary open circuit in the wiring or a loose terminal, will also be 
stored. These malfunctions will be displayed as sporadic faults "SP". 

SYSTEM ACTIVE INDICATOR 

The optical functional display for the central locking is an LED in the drivers door upper trim section. The LED 
flashes for 28 days after locking the door and goes out if the doors are not unlocked within this period. 

The function of the anti-theft alarm system (ATA) is not distinctly indicated. 

ANTI-THEFT ALARM SYSTEM, POSSIBLE ITEMS CAUSING TRIGGERS 

The breakdown of the display content illustrated in EVALUATING DISPLAY GROUP NUMBER 010 for 
the display group number 10 gives information as to which component triggered the alarm system last, and can 
therefore help the Guided Fault Finding/correction. 

This "DTC memory" cannot be erased. 

ON BOARD DIAGNOSIS (OBD) FOR THE CENTRAL LOCKING SYSTEM, INITIATING 

Test prerequisites: 

z

Voltage supply and fuses for the respective system OK.  

z

To initiate the On Board Diagnosis (OBD) the ignition must be switched on "Terminal 15 on".  

Initiating 

NOTE:

Before changing a component erase DTC memory, perform functional checks 
and check DTC memory again.

NOTE:

If the display remains blank, check V.A.G 1551 voltage supply referring to 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ACCESSORIES & EQUIPMENT On Board Diagnostic (OBD) - New Beetle

  

z

Additional operating information can be printed out depending on the program by pressing the HELP 
button of V.A.G 1551.  

z

The --> button serves to advance the program sequence.  

z

The PRINT button is used for switching on the printer (warning lamp in key lights up).  

z

Connecting scan tool, see Scan tool, connecting . 

{

Switch on ignition.  

{

Switch on printer with the Print button (indicator lamp in button lights up).  

Indicated on display: 

Fig. 140: Scan Tool Display - OBD For Central Locking System (1 Of 14) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Address word for central locking: 35 

Indicated on display: 

Electrical Wiring Diagram.

 

2003 Volkswagen New Beetle GLS 

1998-2004 ACCESSORIES & EQUIPMENT On Board Diagnostic (OBD) - New Beetle

  

Fig. 141: Scan Tool Display - OBD For Central Locking System (2 Of 14)
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

Press buttons -3- and -5-.  

Indicated on display after entering address word 35: 

z

Confirm entry with -Q- button. 

Fig. 142: Scan Tool Display - OBD For Central Locking System (3 Of 14) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

and the following is indicated on display: 

Indicated on display: 

Fig. 143: Scan Tool Display - OBD For Central Locking System (4 Of 14) 
Courtesy of VOLKSWAGEN OF AMERICA, INC.

 

2003 Volkswagen New Beetle GLS 

1998-2004 ACCESSORIES & EQUIPMENT On Board Diagnostic (OBD) - New Beetle

  

The scan tool V.A.G 1551 display will show the control unit identification, e.g.:

z

Press --> button. 

Fig. 144: Scan Tool Display - OBD For Central Locking System (5 Of 14) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Indicated on display: 

Fig. 145: Scan Tool Display - OBD For Central Locking System (6 Of 14) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

NOTE:

z

If one of the malfunction messages opposite appears in the display, the 
possible causes of the malfunction can be printed out with the HELP 
button. See Fig. 146 . 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ACCESSORIES & EQUIPMENT On Board Diagnostic (OBD) - New Beetle