Volkswagen New Beetle. Manual - part 1468

 

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Volkswagen New Beetle. Manual - part 1468

 

 

Fig. 49: V.A.G 1551 Scan Tool Display - Checking EVAP System For Leak (2 Of 4) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

Press buttons -0-, -7- and -1- for "Display group number 71" and confirm entry with -Q- button. 

Indicated on display 

Fig. 50: V.A.G 1551 Scan Tool Display - Checking EVAP System For Leak (3 Of 4) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Indicated on display 

 

2003 Volkswagen New Beetle GLS 

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

  

Fig. 51: V.A.G 1551 Scan Tool Display - Checking EVAP System For Leak (4 Of 4) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

Check display in display zone 1: 

DISPLAY IN DISPLAY ZONE CHECK 

If "Reed open" appears in display group 1: 

z

Open fuel tank cap briefly to allow pressure in fuel tank to dissipate, this will close reed contact.  

If the specification is obtained: 

z

Press button 4 for "Introduction of basic setting" function.  

Indicated on display 

-

Display zones

1

2

3

4

Display group 71: Evaporative Emission (EVAP) system diagnosis (leak detection)

Display

Reed open 

Reed closed

Small leak/large 

leak 

Abort

Syst. Test 

Check 

Check end

Test OFF/Test ON

Syst. OK

Syst. not OK

Indicated

Reed contact 

condition

Malfunction 

message

System 

condition

Diagnosis condition and

diagnosis result

Working 
range

-

-

-

-

Specified 
value

Reed open

-

Check.END

Syst. OK

 

2003 Volkswagen New Beetle GLS 

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

  

Fig. 52: V.A.G 1551 Scan Tool Display - Checking EVAP System For Leak (5 Of 11) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

The test of the Evaporative Emission (EVAP) system will be initiated. First of all the function of the Reed 
contact (in the Leak detection pump -V144-) will be checked by the control module. 

After approx. 10 seconds the Leak Detection Pump (LDP) -V144- will be activated and build-up pressure in the 
fuel system. 

Indicated on display 

Fig. 53: V.A.G 1551 Scan Tool Display - Checking EVAP System For Leak (6 Of 11) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

The test will be initiated after approx. 50 seconds (when there is sufficient pressure available in the fuel system 
can last up to 120 seconds). 

Indicated on display 

 

2003 Volkswagen New Beetle GLS 

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

  

Fig. 54: V.A.G 1551 Scan Tool Display - Checking EVAP System For Leak (7 Of 11) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

The Leak detection pump V144- switches off and the control module measures the time until the reed contact 
closes. 

Indicated on display 

Fig. 55: V.A.G 1551 Scan Tool Display - Checking EVAP System For Leak (8 Of 11) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

Check display in display zones 3 and 4: specified value display field 3: Check. END Specified value 
display field 4: Syst. OK  

DISPLAY IN DISPLAY ZONE CHECK 

-

Display zones

1

2

3

4

Display group 71: Diagnosis of Evaporative Emission (EVAP) system (leak detection)

Display

Reed closed 

Reed open

Small leak/large leak 

Abort

Syst. Test 

Check 

Check end

Test OFF/Test ON

Syst. OK

Syst. not OK

Indicated

Condition Reed contact

Malfunction message

System condition

Result

Working 
range

-

-

-

-

Specified 

Reed open

-

Messg. END

Syst. OK

 

2003 Volkswagen New Beetle GLS 

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

  

 

 

 

 

 

 

 

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