Volkswagen New Beetle. Manual - part 1610

Fig. 49: Disconnecting Pin Connector From Engine Coolant Temperature (ECT) Sensor With 
Engine Coolant Temperature (ECT) Sensor 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Bridge connector terminals 3 + 4 using auxiliary cables from VAG 1594 and observe display. 

If display jumps to approx. 143.0 °C: 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Multiport Fuel Injection (MFI) , 1.8L AWP, AWV - New Beetle

  

Fig. 50: Identifying ECT Sensor Harness Connector Terminals 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Press --> button.  

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Press buttons -0- and -6- for "End output" function and confirm input with -Q- button.  

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Switch off ignition.  

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Replace Engine Coolant Temperature (ECT) sensor -G62- with Engine Coolant Temperature (ECT) 
sensor -G2 -, see item 28 .  

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Check DTC Memory, if necessary, repair any malfunctions and then Erase DTC Memory, see DTC 
MEMORY OF MOTRONIC ENGINE CONTROL MODULE (ECM) -J220-, CHECKING AND 
ERASING .  

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Multiport Fuel Injection (MFI) , 1.8L AWP, AWV - New Beetle

  

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Read readiness code, see READINESS CODE, DISPLAYING . If DTC memory has been erased or 
Motronic Engine Control Module (ECM) -J220- was disconnected from battery positive, readiness code 
must be generated again, see READINESS CODE, GENERATING .  

If display remains at approx. -48.0 C: 

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Press --> button.  

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Press buttons -0- and -6- for "End output" function and confirm input with -Q- button.  

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Switch off ignition.  

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Check wiring using Electrical Wiring Diagram, see CHECKING WIRING .  

Continuation of check when display approx. 143.0 °C: 

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Disconnect 4-pin connector from Engine Coolant Temperature (ECT) sensor -G62- with Engine Coolant 
Temperature (ECT) sensor -G2- -arrow-. 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Multiport Fuel Injection (MFI) , 1.8L AWP, AWV - New Beetle

  

Fig. 51: Disconnecting Pin Connector From Engine Coolant Temperature (ECT) Sensor With 
Engine Coolant Temperature (ECT) Sensor 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

If display jumps to approx. -48.0 C: 

z

Press -->button.  

z

Press buttons -0- and -6- for "End output" function and confirm input with -Q- button.  

z

Switch off ignition.  

z

Replace Engine Coolant Temperature (ECT) sensor -G62- with Engine Coolant Temperature (ECT) 
sensor -G2-, see item 28 .  

z

Check DTC Memory, if necessary, repair any malfunctions and then Erase DTC Memory, see DTC 
MEMORY OF MOTRONIC ENGINE CONTROL MODULE (ECM) -J220-, CHECKING AND 
ERASING .  

z

Read readiness code, see READINESS CODE, DISPLAYING . If DTC memory has been erased or 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Multiport Fuel Injection (MFI) , 1.8L AWP, AWV - New Beetle