Volkswagen New Beetle. Manual - part 1691

 

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Volkswagen New Beetle. Manual - part 1691

 

 

Possible causes of malfunction if sensor control frequency is too slow: 

z

Slots or holes in sensor body are blocked  

z

Sensor vent hole in area of connecting wire is blocked  

z

Sensor has been overheated (glazed)  

z

Sensor has been damaged by leaded fuel  

Checking basic voltage for oxygen sensor 2 

z

Remove protective cover -arrows- and separate 4-pin connector (black/brown) -1- to Oxygen Sensor 
(O2S) after Three Way Catalytic Converter (TWC) -G130-. 

Motronic Engine Control Module 

(ECM) -J220-  

VOLTAGE FOR OXYGEN 

SENSOR 2

z

Check oxygen sensor wiring, see 

CHECKING OXYGEN SENSOR 

WIRING, OXYGEN SENSOR 2

Constant 
between 0.400 
to 0.500 V

z

Open circuit via: oxygen sensor, 

sensor wiring, Ground (GND) wiring, 

Motronic Engine Control Module 

(ECM) -J220-  

Constant 0.000 
V

z

Short to Ground (GND) via: oxygen 

sensor, sensor wiring, Ground (GND) 

wiring, Motronic Engine Control 

Module (ECM) -J220-  

 

2003 Volkswagen New Beetle GLS 

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

  

Fig. 115: Separating 4-Pin Connector (Black/Brown) -1- To HO2S -G130- After TWC 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

Connect multimeter with auxiliary cables from VAG 1594 to measure voltage at terminals 3 + 4 
(connector to Motronic control module). 

 

2003 Volkswagen New Beetle GLS 

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

  

Fig. 116: Measuring Voltage At Terminals 3 And 4 On HO2S -G130- Harness Connector Terminals
Courtesy of VOLKSWAGEN OF AMERICA, INC.

 

2003 Volkswagen New Beetle GLS 

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

  

z

Start engine and measure basic voltage. 

Specification: 0.400 to 0.500 V 

z

Switch off ignition.  

If the specification is not obtained: 

z

Check oxygen sensor wiring, see CHECKING OXYGEN SENSOR WIRING, OXYGEN SENSOR 
2
 . 

If the specification is obtained: 

z

Replace Oxygen Sensor after Three Way Catalytic Converter (TWC) -G130-, see item 8 .  

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 
Motronic Engine Control Module (ECM) -J220- was disconnected from battery positive, readiness code 
must be generated again, see READINESS CODE, GENERATING .  

Checking Oxygen Sensor wiring, oxygen sensor 2 

z

Remove inner plenum chamber cover, left: 

See PLENUM CHAMBER INNER COVER, REMOVING AND INSTALLING 

z

Connect VAG 1598/31 test box to control module wiring harness. Motronic Engine Control Module 
(ECM) -J220- is not connected by this action. 

 

2003 Volkswagen New Beetle GLS 

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

  

 

 

 

 

 

 

 

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