Volkswagen New Beetle. Manual - part 1228

 

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Volkswagen New Beetle. Manual - part 1228

 

 

Terminal 3 + socket 98 

Terminal 4 + socket 101 

Wire resistance: Max. 1.5 ohm 

z

Additionally, check wires for short to one another.  

If no wiring malfunction is detected and voltage was present between terminals 1 + 3: 

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Check function. See CHECKING FUNCTION .  

If no wiring malfunction is detected and no voltage was present between terminals 1 + 3: 

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Replace engine control module.  

See Engine Control Module (ECM), Replacing . 

Checking function 

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Remove inner plenum chamber cover, left side. 

See PLENUM CHAMBER INNER COVER, REMOVING AND INSTALLING . 

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Connect VAG 1598/31 test box to wiring harness for control module and to control module.  

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Re-connect connector at Charge Air Pressure Sensor -G31-.  

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Connect multimeter to measure voltage to sockets 101 (positive) and 108 (Ground) using adapter cables 
from VAG 1594.  

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Start engine and measure basic voltage. 

Specification: 1.80 to 2.00 V 

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Bring engine to specified RPM by quickly depressing accelerator pedal. 

Specification: 2.00 to 3.00 V 

If the specifications are not obtained: 

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Replace Charge Air Pressure Sensor -G31-.  

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Check DTC memory. 

See Diagnostic Trouble Code (DTC) Memory, Checking And Erasing . 

z

Read readiness code. 

 

2003 Volkswagen New Beetle GLS 

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

  

See Readiness Code, Displaying . 

If the DTC memory has been erased or the engine control module separated from the permanent positive, the 
readiness code must be generated again. 

See Readiness Code, Displaying . 

Recirculating valve for turbocharger -N249-, checking 

Special tools and equipment 

z

VAG 1551 Scan Tool (or vehicle system tester VAG 1552 with cable VAG 1551/3B)  

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VAG 1526 Hand multimeter or VAG 1715 multimeter  

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VAG 1594A Adapter set  

Test conditions 

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Output Diagnostic Test Mode (DTM) completed  

See Output Diagnostic Test Mode (DTM) . 

Test sequence 

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Switch ignition off.  

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Disconnect connector from Recirculating valve for turbocharger -N249-. 

 

2003 Volkswagen New Beetle GLS 

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

  

Fig. 23: Locating Recirculating Valve For Turbocharger 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

Measure resistance between valve terminals. 

Specification: 27 to 30 ohm 

If the specification is not obtained: 

z

Replace Recirculating valve for turbocharger -N249-.  

z

Check DTC memory. 

See Diagnostic Trouble Code (DTC) Memory, Checking And Erasing . 

z

Read readiness code. 

 

2003 Volkswagen New Beetle GLS 

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

  

See Readiness Code, Displaying . 

If the DTC memory has been erased or the Engine Control Module separated from permanent (battery) positive, 
the readiness code must be generated again. 

See Readiness Code, Displaying . 

z

Repeat test sequence.  

If the specification is not obtained: 

z

Check wiring for open circuit or short to positive according to wiring diagram. 

See appropriate SYSTEM WIRING DIAGRAM article. 

If no wiring problem is detected: 

z

Replace Engine Control Module (ECM). 

See Engine Control Module (ECM), Replacing . 

z

Check activation of Recirculating valve for turbocharger -N249-. 

See Output Diagnostic Test Mode (DTM) . 

Pressure unit for Wastegate Bypass Regulator Valve -N75-, checking 

Special tools and equipment 

z

VAG 1551 Scan Tool (or VAG 1552 vehicle system tester with VAG 1551/3B cable)  

Test conditions 

z

Engine oil temperature min. 60° C  

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No leaks on intake and exhaust systems.  

Test sequence 

z

Disconnect connector -2- from Wastegate Bypass Regulator Valve -N75- -1-. 

 

2003 Volkswagen New Beetle GLS 

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

  

 

 

 

 

 

 

 

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