Volkswagen New Beetle. Manual - part 1334

 

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Volkswagen New Beetle. Manual - part 1334

 

 

If specification obtained: 

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

Fig. 99: 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 harness connector using Wiring diagram. 

Fig. 100: Identifying Needle Lift Sensor Harness Connector Terminals 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Up to MY 1999 

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Terminal 1 + socket 62  

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Terminal 2 + socket 55  

From MY 2000 

 

2003 Volkswagen New Beetle GLS 

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

  

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Terminal 1 + socket 109  

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Terminal 2 + socket 101  

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Wire resistance: 1.5ohm maximum  

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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 ECM -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 .  

Diesel injection timing control range, checking 

The EGR function occurs in Function 04 (basic setting). By using this procedure, the EGR valve is cycled every 
10 seconds, so that in the measurement block 003 the extreme values can be read for EGR (Mass Air Flow 
sensor) in channel 3. 

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  

Test sequence 

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Connect VAG1551/1552 Scan Tool (See VAG1551/1552 SCAN TOOL, CONNECTING ) and start 
engine and let idle.  

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

Display will appear as shown (example only):

 

2003 Volkswagen New Beetle GLS 

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

  

Fig. 101: Scan Tool Display - Diesel Injection Timing Control Range (1 Of 5) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Press --> button.  

Display will appear as shown: 

Fig. 102: Scan Tool Display - Diesel Injection Timing Control Range (2 Of 5) 
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.  

Display will appear as shown: 

 

2003 Volkswagen New Beetle GLS 

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

  

Fig. 103: Scan Tool Display - Diesel Injection Timing Control Range (3 Of 5) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Press buttons -0-, -0- and -4- to select "Display group 4".  

Display will appear as shown: 

Fig. 104: Scan Tool Display - Diesel Injection Timing Control Range (4 Of 5) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Specification (Display zone 3): 7.0 to 9.0° BTDC  

After approx. 10 seconds, the Diesel injection adjuster is moved into the retarded position. 

Display will appear as shown: 

 

2003 Volkswagen New Beetle GLS 

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

  

 

 

 

 

 

 

 

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