Volkswagen New Beetle. Manual - part 1385

Fig. 81: Identifying 10-Pin -G81- Connector Terminals 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Measure Fuel Temperature sensor resistance between terminals 4 + 7.  

Specification chart: 

Scale A shows resistance values for temperature range 0 to 50 °C and scale B the values for temperature range 
50 to 100 °C. 

 

2003 Volkswagen New Beetle GLS 

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

  

Fig. 82: Fuel Temperature Sensor Resistance Versus Temperature Range Graph 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Examples: 

 

2003 Volkswagen New Beetle GLS 

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

  

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30 °C corresponds to a resistance between 1500 and 2000 ohm  

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80 °C corresponds to a resistance between 275 and 375 ohm  

If specification not obtained: 

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Replace Diesel injection pump. See DIESEL INJECTION PUMP, REMOVING AND 
INSTALLING .  

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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. 83: 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. 84: Identifying 10-Pin Harness Connector Terminals 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Up to MY 1999 

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Terminal 7 + socket 53  

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Terminal 4 + socket 76  

From MY 2000 

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Terminal 7 + socket 111  

 

2003 Volkswagen New Beetle GLS 

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