Volkswagen New Beetle. Manual - part 1335

 

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Volkswagen New Beetle. Manual - part 1335

 

 

Fig. 105: Scan Tool Display - Diesel Injection Timing Control Range (5 Of 5) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Specification (Display zone 3): 3.0 to 5.0° BTDC  

If specifications not obtained: 

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Check Cold Start injector as follows:  

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Press --> button.  

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Press -0- and -6- buttons to select Function 06: "End output".  

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Press -Q- button to enter input.  

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Switch OFF ignition.  

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Disconnect harness connector from Diesel injection pump. See DIESEL INJECTION SYSTEM, 
COMPONENT LOCATIONS OVERVIEW
 .  

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Measure resistance between connector terminals 9 + 10. 

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Specification: 12 to 20 ohm  

Fig. 106: Identifying 10-Pin Connector Terminals

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Diesel Fuel Injection, 1.9L ALH - New Beetle

  

Courtesy of VOLKSWAGEN OF AMERICA, INC.

If specification not obtained: 

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Replace Cold Start injector -N108-. See INTAKE MANIFOLD CHANGE-OVER VALVE, 
SERVICING
 .  

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Display the Readiness code. See READINESS CODE, DISPLAYING .  

If DTC memory was erased: 

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Set the readiness code. See READINESS CODE, SETTING .  

If specification obtained: 

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Connect VAG1598/22 (or 1598/31) Test Box to ECM wiring harness. 

Fig. 107: Connecting VAG1598/22 (Or 1598/31) Test Box To ECM Wiring Harness 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Check wiring for open circuit between Test Box and 10-pin harness connector using Wiring diagram. 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Diesel Fuel Injection, 1.9L ALH - New Beetle

  

Fig. 108: Identifying 10-Pin Harness Connector Terminals 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Up to MY 1999 

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Terminal 9 + socket 79  

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Terminal 10 + sockets 2 + 28  

From MY 2000 

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Terminal 9 + socket 114  

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Terminal 10 + sockets 1 + 2  

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Wire resistance: 1.5ohm maximum  

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Diesel Fuel Injection, 1.9L ALH - New Beetle

  

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Check wires for shorting to: one another, Ground and Battery +  

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Specification: INFINITY ohm  

If wiring OK 

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Replace Engine Control Module -J248-. See Engine Control Module (ECM), replacing .  

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Display the Readiness code. See READINESS CODE, DISPLAYING .  

If DTC memory was erased: 

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Set the readiness code. See READINESS CODE, SETTING .  

Boost pressure control, checking 

Special tools 

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VAG1551/1552 Scan Tool using VAG1551/3 Adapter cable  

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VAG1598/22 Test Box (MY 1999)  

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VAG1598/31 Test Box (from MY 2000)  

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Fluke 83 multimeter  

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VW 1594 Adapter kit  

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Wiring diagram  

See CHARGE AIR PRESSURE SYSTEM, CHECKING . 

Test requirements 

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Fuse 34 OK  

Test sequence 

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Boost pressure using VAG1551/1552 Scan Tool during a test drive.  

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Make sure Wastegate Bypass Regulator valve - N75- harness connector is connected.  

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Connect VAG1551/1552 Scan Tool. See VAG1551/1552 SCAN TOOL, CONNECTING .  

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Start engine and let idle.  

NOTE:

To check Boost pressure control it is essential to first know the actual Boost 
pressure value independent of the Boost pressure control limits.

WARNING:

For safe operation, use a second technician to operate test equipment 
and take readings from back seat, during test drive.

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Diesel Fuel Injection, 1.9L ALH - New Beetle

  

 

 

 

 

 

 

 

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