Volkswagen New Beetle. Manual - part 1635

 

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Volkswagen New Beetle. Manual - part 1635

 

 

Fig. 131: Identifying Scan Tool Display - Engine Operating Mode, Checking (2 Of 3) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Press buttons -0-, -0- and -5- for "Display group number 5" and confirm entry with -Q- button. 

Indicated on display (1 to 4 - Display zones) 

Fig. 132: Identifying Scan Tool Display - Engine Operating Mode, Checking (3 Of 3) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Check whether control module recognizes operating mode (display zone 4):  

Idling: 

As long as the engine is running at idle speed "idling" must be displayed

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Multiport Fuel Injection (MFI) , 1.8L AWP, AWV - New Beetle

  

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Display: Idling  

Overrun mode: 

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Increase engine speed to above 3000 RPM.  

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Close throttle abruptly.  

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As long as the engine speed is above 1400 RPM "overrun" must be displayed  

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Display: Overrun  

Observe the valid safety precautions when carrying out a road test, see SAFETY PRECAUTIONS . 

Part throttle: 

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Rev up evenly.  

As long as the engine is being revved up evenly, "part throttle" must be displayed 

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Display: Part throttle  

Enrichment: 

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Floor accelerator pedal (onto throttle valve stop). 

Acceleration "enrichment" must be displayed briefly 

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Display: Enrichment  

Full throttle: 

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Floor accelerator pedal (onto throttle valve stop). 

"Full throttle" must be displayed briefly 

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Display: Full throttle  

Observe the valid safety precautions when carrying out a road test, see SAFETY PRECAUTIONS . 

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Press --> button.  

NOTE:

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A test drive may have to be performed to show "Overrun" in display. 

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Below 1400 RPM idling speed will be recognized.  

NOTE:

A test drive may have to be performed to show "Full throttle" in the 
display.

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Multiport Fuel Injection (MFI) , 1.8L AWP, AWV - New Beetle

  

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Press buttons -0- and -6- for function "End output" and confirm entry with -Q- button. 

If the specifications are not obtained: 

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Check DTC Memory, if necessary, repair any malfunctions and then Erase DTC Memory, see DTC 
MEMORY OF MOTRONIC ENGINE CONTROL MODULE (ECM) -J220-, CHECKING AND 
ERASING
 .  

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Check accelerator mechanism for ease of operation.  

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Check throttle valve potentiometer, see THROTTLE VALVE CONTROL MODULE -J338-, 
CHECKING
 .  

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Read readiness code, see READINESS CODE, DISPLAYING . If DTC memory has been erased or 
Motronic Engine Control Module (ECM) -J220- was disconnected from battery positive, readiness code 
must be generated again, see READINESS CODE, GENERATING .  

MOTRONIC ENGINE CONTROL MODULE (ECM) 

Motronic Engine Control Module (ECM) - J220- voltage supply, checking 

Special tools, test equipment and auxiliary items 

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VAG 1551 scan tool or VAG 1552 mobile scan tool with VAG 1551/3B cable  

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VAG 1598/31 test box  

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VAG 1526 A or Fluke 83 multimeter  

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VAG 1594 adapter set  

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Electrical Wiring Diagram  

Test conditions 

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All fuses must be OK. Fuse holder is located behind access panel at far left end of dash. 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Multiport Fuel Injection (MFI) , 1.8L AWP, AWV - New Beetle

  

Fig. 133: Locating Fuses 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Battery voltage must be at least 11.5 V  

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All electrical accessories, e.g. lights and rear window defroster must be switched off  

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If the vehicle is equipped with air conditioning, it must be turned off  

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Selector lever must be in position "P" or "N" on vehicles with an automatic transmission  

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Alternator OK.  

Test sequence 

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Connect VAG 1551 scan tool ((VAG 1552). Start engine and select "Address word" 01 of Motronic 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Multiport Fuel Injection (MFI) , 1.8L AWP, AWV - New Beetle

  

 

 

 

 

 

 

 

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