Volkswagen New Beetle. Manual - part 1921

 

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Volkswagen New Beetle. Manual - part 1921

 

 

Fig. 1: Identifying VAS 5052 Vehicle Diagnostic And Information System 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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The respective fuses of the Motronic fuel injection and ignition system must be OK. Fuse holder is 
located behind access panel at far left end of dash. 

Fig. 2: Identifying Fuses 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Battery voltage must be at least 11.5 volts.  

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All electrical consumers such as, for example, lights and rear window defroster must be switched off.  

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Parking brake must be engaged or else daylight driving lights will be switched on.  

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For vehicles with automatic transmission, selector lever must be in position -P- or -N-.  

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If vehicle is equipped with an A/C system, it must be switched off.  

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Ground (GND) connections between engine and chassis must be OK.  

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Ignition switched off.  

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 1.8L Generic Scan Tool - New Beetle

  

Work procedure 

Connect diagnostic tester (VAS 5052) using (VAS 5052/3) diagnostic cable as follows: 

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Connect diagnostic cable connector to Data Link Connector (DLC) -arrow-. 

Fig. 3: Identifying Data Link Connector (DLC) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Depending on the desired diagnostic mode, it is necessary to:switch on ignition  

or start engine, see SELECTABLE DIAGNOSTIC MODES UNDER ADDRESS WORD 33 - OBD . 

Connect test box for wiring test 

Recommended special tools and equipment 

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VAG1598/31 test box 

NOTE:

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Respective operation of the diagnostic tester: 

See Operating instructions of the diagnostic tester 

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If no display appears on diagnostic tester, check voltage supply at 
Diagnostic Link Connector (DLC).  

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 1.8L Generic Scan Tool - New Beetle

  

Fig. 4: Identifying VAG1598/31 Test Box 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Requirement 

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Ignition switched off.  

Work procedure 

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Remove inner cover, left plenum chamber, to do this, slide center cover -1- of plenum chamber forward 
out of catch and remove from instrument panel.  

Fig. 5: Removing Inner Cover 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Remove three bolts -1-. 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 1.8L Generic Scan Tool - New Beetle

  

Fig. 6: [Removing Three Bolts] 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Lift left cover -1- of plenum chamber in center of instrument panel (arrow A) and thereby unclip (front 
edge clips, rear edge clamps).  

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Pull cover -1- toward vehicle center out of bracket underneath Apillar (arrow B).  

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Then disengage connector from control module and disconnect.  

Fig. 7: Pulling Cover Toward Vehicle Center Out Of Bracket Underneath A Pillar 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Connect VAG1598/31 test box at control module wiring harness. Engine Control Module (ECM) is not 
connected. 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 1.8L Generic Scan Tool - New Beetle

  

 

 

 

 

 

 

 

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