Volkswagen New Beetle. Manual - part 1274

 

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Volkswagen New Beetle. Manual - part 1274

 

 

Exhaust Gas Recirculation (EGR), checking 

Special tools and equipment 

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Fluke 83 multimeter  

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VW 1594 Adaptor kit  

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VAG 1598/22 Test Box  

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VAG 1551/1552 Scan Tool with VAG 1551/3 adaptor cable  

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Wiring diagram 

Fig. 22: Identifying Special Tools And Equipment 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Test sequence 

NOTE:

The EGR return function is checked via Function 04 (Basic Setting). Through 
this procedure the valve for EGR is metered every 10 seconds, so that in 
measured value block 003 the extreme values for the EGR (air mass sensor) in 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE Exhaust System, Emission Controls - 1.9L 4-Cyl. - ALH, New Beetle

  

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Connect VAG 1551/1552 Scan Tool: 

See VAG1551/1552 Scan Tool, Connecting . 

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Start engine and let idle.  

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Press 0 and 1 buttons to select Address word 01 "Engine electronics": 

See DTC Memory, Checking . 

Indicated on display 

Fig. 23: Identifying Special Tools Display (1 Of 3) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Press 0 and 4 buttons to select Function 04: "Basic setting".  

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Press Q button to enter input.  

Indicated on display 

display field 3 can be read.

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE Exhaust System, Emission Controls - 1.9L 4-Cyl. - ALH, New Beetle

  

Fig. 24: Identifying Special Tools Display (2 Of 3) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Press 0, 0 and 3 buttons to select "Display group 3".  

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Press Q button to enter input.  

Indicated on display: (1 to 4 - Display zones)

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE Exhaust System, Emission Controls - 1.9L 4-Cyl. - ALH, New Beetle

  

Fig. 25: Identifying Special Tools Display (3 Of 3) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Display in field 2 must fluctuate every 10 seconds between EGR active or EGR inactive (n.aktiv). 

Displays in display zones 3 and 4 must fluctuate within following control range: 

See Mass Air Flow (MAF) Sensor -G70-, Checking . 

If EGR NOT active: 

Specification display zone 3: 420 to 560 mg/stroke 

Specification display zone 4: 0 to 5% 

NOTE:

If a constant value of 550 mg/H is indicated in display zone 3, check Mass Air 
Flow sensor.

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE Exhaust System, Emission Controls - 1.9L 4-Cyl. - ALH, New Beetle

  

 

 

 

 

 

 

 

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