Volkswagen New Beetle. Manual - part 1310

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Diagnostic cable VAS 5051/1 or VAS 5051/3  

Fig. 18: Identifying VAS 5051 Vehicle Diagnosis, Testing And Information System 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Work sequence 

Connect Vehicle Diagnosis, Testing and Information System VAS 5051 as follows: 

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Connect connector of diagnosis cable VAS 5051/1 or VAS 5051/3 to diagnosis connection. 

Fig. 19: Connecting Connector Of Diagnosis Cable VAS 5051/1 Or VAS 5051/3 To Diagnosis 
Connection 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Start engine and run at idling speed. 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE Diesel Fuel Injection - New Beetle, 1.9L 4-Cyl. - BEW

  

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Switch ignition on.  

Select operating mode 

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Press button on screen for "Vehicle self-diagnosis".  

Select vehicle system 

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Press button "01 - Engine electronics" on screen.  

The control module identification and engine control module coding are shown on the screen. 

Select diagnostic function 

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Press button "02 - Interrogating fault memory" on screen. 

"No fault detected" appears on screen if no DTCs are stored in the engine control module. 

If DTCs are stored in the engine control module they will appear on the screen listed one below the other. 

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Press <-- button.  

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Press button "05 - Erase fault memory" on screen.  

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Press function 06-"End output".  

COMPONENTS, ADAPTING 

Special tools and equipment 

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VAS 5051 Vehicle Diagnosis, Testing and Information System  

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Diagnostic cable VAS 5051/1 or VAS 5051/3 

NOTE:

Only when engine does not start:

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE Diesel Fuel Injection - New Beetle, 1.9L 4-Cyl. - BEW

  

Fig. 20: Identifying VAS 5051 Vehicle Diagnosis, Testing And Information System 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Select "guided fault finding" in the VAS 5051 tester. 

After all control modules have been interrogated: 

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Press "Go to" button  

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Select "Function/component selection"  

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Select "drivetrain"  

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Select "engine code"  

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"01 Select "01-Systems capable of self-diagnosis"  

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Select "engine management system"  

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Select "Functions"  

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Select "Function or component"  

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE Diesel Fuel Injection - New Beetle, 1.9L 4-Cyl. - BEW

  

1998-2004 ENGINE PERFORMANCE

Diesel Fuel Injection, 1.9L ALH - New Beetle 

DIESEL FUEL INJECTION 

DIESEL DIRECT FUEL INJECTION SYSTEM, SERVICING 

The Diesel direct injection system Engine Control Module (ECM) is equipped with a Diagnostic Trouble Code 
(DTC) memory. Before starting repairs, adjustments and troubleshooting, check DTC memory to see if there are 
any stored DTCs. See DTC MEMORY, CHECKING . Make sure that Function 03: Output Diagnostic Test 
Mode (DTM) has been performed. See FUNCTION 03: OUTPUT DIAGNOSTIC TEST MODE, 
PERFORMING . 

Safety precautions 

To prevent injuries to persons and/or damage to the Diesel direct fuel injection and glow plug system, observe 
the following: 

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Switch OFF the ignition before connecting or disconnecting Diesel fuel injection or glow plug system 
wiring or test cables.  

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If the engine requires cranking at starter speed, without starting, e.g. when checking compression, 
disconnect the N109 Fuel cut-off valve harness connector from the Diesel injection pump.  

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Obtain the radio Anti-theft code from the customer BEFORE disconnecting the Battery Ground strap.  

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Always make sure that the ignition is switched OFF before disconnecting and connecting the battery. 
Otherwise, the Diesel direct injection system Engine Control Module could be damaged.  

Safety precautions during Test drives 

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Always attach Test and measuring instruments to the rear seat and operate them using a second technician 
from this location.  

If test and measuring instruments are operated from the front passenger's seat and the vehicle is involved in an 
accident, there is a possibility that the person sitting in this seat could receive serious injuries if the airbag is 
triggered. 

Rules for cleanliness 

NOTE:

Some checking and adjustment procedures can cause DTCs to be stored in 
DTC memory. For this reason, always erase DTC memory after completing all 
checking and adjustment procedures. See DTC MEMORY, ERASING . See 
READINESS CODE, SETTING to Set the Readiness code.

WARNING:

Secure Scan Tool to rear seat and operate from this position using a 
second technician.

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Diesel Fuel Injection, 1.9L ALH - New Beetle

  

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Diesel Fuel Injection, 1.9L ALH - New Beetle