Volkswagen New Beetle. Manual - part 1383

 

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Volkswagen New Beetle. Manual - part 1383

 

 

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30 °C corresponds to a resistance from 1500 to 2000ohm  

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80 °C corresponds to a resistance from 275 to 375ohm  

If specification not obtained: 

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Replace Intake Air Temperature (IAT) Sensor -G72-.  

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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. 

 

2003 Volkswagen New Beetle GLS 

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

  

Fig. 74: Connecting VAG1598/22 (Or 1598/31) Test Box To ECM Wiring Harness 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Check wiring between Test Box and connector for open circuit using Wiring diagram. 

 

2003 Volkswagen New Beetle GLS 

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

  

Fig. 75: Identifying IAT Sensor Harness Connector Terminals 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Terminal 1 + socket 25  

 

2003 Volkswagen New Beetle GLS 

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

  

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Terminal 2 + socket 13  

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Wire resistance: maximum 1.5ohm  

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Check wires for short to one another, to Ground and to 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 .  

Fuel Temperature Sensor -G81-, 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

  

 

 

 

 

 

 

 

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