Volkswagen New Beetle. Manual - part 1427

 

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Volkswagen New Beetle. Manual - part 1427

 

 

Fig. 36: Identifying Evaporative Emission System Components
Courtesy of VOLKSWAGEN OF AMERICA, INC.
 

EVAPORATIVE EMISSION (EVAP) SYSTEM, OVERVIEW 

1. Vacuum reservoir  

2. Pressure retaining valve 

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For fuel tank breathing  

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Checking. See Checking Pressure Retaining Valve  

3. Change-over valve 

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Checking. See Checking Change-Over Valve  

4. EVAP canister 

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In rear right wheel well behind wheel housing liner  

5. Leak detection pump (LDP) -V144- 

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At EVAP canister  

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Checking activation: 

See Output Diagnostic Test Mode (DTM), Initiating 

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Checking. See LEAK DETECTION PUMP (LDP) -V144-, CHECKING  

6. Air cleaner for leak detection pump  

7. Tank cap unit 

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With rubber cup  

8. Fuel tank 

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Support with engine and transmission jack VAG 1383 A when removing  

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Removing and installing. See FUEL TANK, REMOVING AND INSTALLING  

9. Fuel delivery unit 

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Removing and installing. See FUEL DELIVERY UNIT, REMOVING AND INSTALLING  

10. Check-valve 

NOTE:

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Components marked with an * are checked by the On Board Diagnostic 
(OBD). See Fig. 36 . 

See On Board Diagnostic (OBD) . 

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Components marked with ** are checked by the Output Diagnostic Test 
Mode (DTM). 

See Output Diagnostic Test Mode (DTM), Initiating . 

NOTE:

The following list refers to items in Fig. 37 .

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE Fuel System - New Beetle, 1.8L (APH, AWV & AWP)

  

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Installation position: arrow points in direction of flow  

11. Intake pipe before turbocharger  

12. Fuel pressure regulator  

13. Fuel rail with injectors  

14. Intake manifold upper part  

15. Throttle valve control module -J338-  

16. Fuel filter 

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Installation position: Arrow points in throughflow direction  

17. EVAP canister purge regulator valve -N80- */** 

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In engine compartment at right about wheel housing  

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Checking activation: 

See Output Diagnostic Test Mode (DTM), Initiating 

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Checking function. See EVAP CANISTER PURGE REGULATOR VALVE -N80-, 
CHECKING
  

18. Test connection  

19. Gravity/overflow valve  

Fig. 37: Overview Of Evaporative Emission System 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

EVAP CANISTER PURGE REGULATOR VALVE -N80-, CHECKING 

In a no-current situation the valve is closed. 

Checking activation, Output Diagnostic Test Mode (DTM): 

See Output Diagnostic Test Mode (DTM), Initiating

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE Fuel System - New Beetle, 1.8L (APH, AWV & AWP)

  

Special tools and equipment 

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VAG 1551 Scan Tool 

Fig. 38: Identifying VAG 1551 Scan Tool 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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VAG 1551/3 Cable 

Fig. 39: Identifying VAG 1551/3 Cable 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Test conditions 

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Fuse No. 43 must be OK 

NOTE:

The VAG 1552 vehicle system tester can be used instead of the VAG 1551 
Scan Tool, however a print-out is not possible.

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE Fuel System - New Beetle, 1.8L (APH, AWV & AWP)

  

Fig. 40: Identifying Location Of Fuse No. 43 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Coolant temperature must be at least 85°C. See display group 04, display zone 3  

Functional check 

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Connect VAG 1551 Scan Tool (VAG 1552). Start engine and select Engine Control Module with 
"Address word" 01. Connecting scan tool and selecting Engine Control Module:  

See V.A.G 1551 Scan Tool, Connecting And Selecting Engine Control Module 

Indicated on display 

Fig. 41: V.A.G 1551 Scan Tool Display - Checking EVAP Canister Purge Regulator Valve (1 Of 4) 
Courtesy of VOLKSWAGEN OF AMERICA, INC.

NOTE:

Fuse box is located behind access panel at far left end of dash.

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE Fuel System - New Beetle, 1.8L (APH, AWV & AWP)

  

 

 

 

 

 

 

 

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