Volkswagen New Beetle. Manual - part 1686

 

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Volkswagen New Beetle. Manual - part 1686

 

 

If the specification is obtained: 

z

Press --> button.  

z

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

z

Switch off ignition. 

Continuation 

If the idle speed is not obtained: 

z

Adapt ECM to Throttle Valve Control Module - J338-, see MOTRONIC ENGINE CONTROL 
MODULE (ECM) - J220- TO THROTTLE VALVE CONTROL MODULE - J338-, ADAPTING
 .  

z

Road test vehicle. 

Observe the valid safety precautions when road testing, see SAFETY PRECAUTIONS . 

z

Again check control module DTC memory.  

z

Repeat idle check. 

If the specifications are not obtained again: 

z

Check Throttle Valve Control Module -J338-, see THROTTLE VALVE CONTROL MODULE -
J338-, CHECKING
 .  

z

Check operating condition of engine, see ENGINE OPERATING MODE, CHECKING .  

z

Check intake air system for unmetered air, see INTAKE AIR SYSTEM (UNMETERED AIR), 
CHECKING FOR LEAKS
  

z

Check signals from/to air conditioner, see SIGNAL FROM/TO AIR CONDITIONING, 
CHECKING
 .  

Oxygen Sensor and oxygen sensor control before Three Way Catalytic Converter (TWC), checking 

 

 

 

1

 

Driving range (gear) selected

 

 

1

 

 

Air conditioning system switched on

 

1

 

 

 

Rear mirror defogger on

1

 

 

 

 

Power assisted steering pressure switch on

NOTE:

z

Raise vehicle to reach oxygen sensor connector.  

z

The Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC) 
has constant regulation and can be distinguished by a 6 -pin connector 
from the Oxygen Sensor (O2S) behind the Three Way Catalytic Converter 
(TWC).  

z

Only gold terminals may be used for servicing the terminals in the 
connector for the oxygen sensor.  

 

2003 Volkswagen New Beetle GLS 

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

  

Special tools, test equipment and auxiliary items 

z

VAG 1551 scan tool or VAG 1552 mobile scan tool with VAG 1551/3B cable  

z

VAG 1598/31 test box  

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VAG 1526 A or Fluke 83 multimeter  

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VAG 1594 adapter set  

z

Electrical Wiring Diagram  

Test conditions 

z

All fuses must be OK. Fuse holder located behind access panel at far left end of dash. 

 

2003 Volkswagen New Beetle GLS 

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

  

Fig. 100: Locating Fuses 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

Battery voltage must be at least 11.5 V  

z

Exhaust system between Three Way Catalytic Converter (TWC) and cylinder head must be free of leaks  

z

Engine Coolant Temperature (ECT) must be at least 80 °C display group 04, display zone 3  

Functional check 

z

Connect VAG 1551 scan tool ((VAG 1552). Start engine and select "Address word" 01 of Motronic 
Engine Control Module (ECM) -J220-. Engine must be running at idle speed. Connecting scan tool and 
selecting Motronic Engine Control Module (ECM) -J220-, see VAG 1551, CONNECTING AND 
SELECTING MOTRONIC ENGINE CONTROL MODULE (ECM) -J220-
 . 

Indicated on display 

Fig. 101: Identifying Scan Tool Display - Checking HO2S Before TWC (1 Of 3) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

Press buttons -0- and -8- for function "Read measuring value block" and confirm entry with -Q- button. 

Indicated on display 

 

2003 Volkswagen New Beetle GLS 

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

  

Fig. 102: Identifying Scan Tool Display - Checking HO2S Before TWC (2 Of 3) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

Press buttons -0-, -3- and -0- for "Display group number 30" and confirm entry with -Q- button. 

Indicated on display (1 to 2 - Display zones) 

Fig. 103: Identifying Scan Tool Display - Checking HO2S Before TWC(3 Of 3) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

Check status of the oxygen sensor control before Three Way Catalytic Converter (TWC) (display zone 1): 

Specification: 1 1 1 

DISPLAY GROUP 30: OXYGEN SENSOR CONTROL 

 

2003 Volkswagen New Beetle GLS 

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

  

 

 

 

 

 

 

 

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