Volkswagen New Beetle. Manual - part 1325

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

 

2003 Volkswagen New Beetle GLS 

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

  

Fig. 65: 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. 

 

2003 Volkswagen New Beetle GLS 

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

  

Fig. 66: Identifying Clutch Vacuum Vent Valve Switch Harness Connector Terminals 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Up to MY 1999 

 

2003 Volkswagen New Beetle GLS 

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

  

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Terminal 1 + socket 2  

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Terminal 1 + socket 28  

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Terminal 2 + socket 46  

From MY 2000 

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Terminal 1 + socket 1  

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Terminal 1 + socket 2  

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Terminal 2 + socket 66  

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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 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 .  

Intake Air Temperature (IAT) Sensor -G72-, 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  

Test sequence 

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Connect VAG1551/1552 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"  

Display will appear as shown (example only):

 

2003 Volkswagen New Beetle GLS 

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