Volkswagen New Beetle. Manual - part 1626

 

  Index      Volkswagen     Volkswagen New Beetle 1998-2008 year - service repair manual

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  1624  1625  1626  1627   ..

 

 

Volkswagen New Beetle. Manual - part 1626

 

 

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  

z

VAG 1526 A or Fluke 83 multimeter  

z

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

  

Significance of 3 digit number block in display zone 1 

SIGNIFICANCE OF 3 DIGIT NUMBER BLOCK IN DISPLAY ZONE 1 SPECIFICATION 

If the specification is obtained: 

z

Change to display group 32 as follows:  

z

Press -C- button.  

z

Press buttons -0-, -3- and -2- for "Display group number 32" and confirm entry with -Q- button. 

Indicated on display (1 to 2 -- Display zones)

 

Display zones

1

2

3 4

Display group 30: oxygen sensor control
Display

xxx

xxx

- -

Indicated

Status of oxygen sensor control before Three Way 

Catalytic Converter (TWC)

Status of oxygen sensor 

control after Three Way 

Catalytic Converter (TWC)

- -

Working 
range

-

-

- -

Specification

111

110

- -

 

Significance, see CHECKING OXYGEN SENSOR 

WIRING FOR OXYGEN SENSOR 1

-

- -

 

If the specification is not obtained, see Heated Oxygen 

Sensor (HO2S) for oxygen sensor before Three Way 

Catalytic Converter (TWC), checking

-

- -

NOTE:

For display zone 1: 

z

The first figure in the 3 figure number block periodically changes between 
0 and 1 (Heated Oxygen Sensor (HO2S) on and off).  

z

The numbers in the 3 figure number block can alternate from 0 and 1 in the 
display depending on the status of the oxygen sensor control.  

Significance if display = 1
1

2

3

Significance

 

 

1

Oxygen sensor control active

 

1

 

Oxygen sensor operationally ready

1

 

 

Heated Oxygen Sensor (HO2S) on

 

2003 Volkswagen New Beetle GLS 

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

  

 

 

 

 

 

 

 

Content   ..  1624  1625  1626  1627   ..