Volkswagen New Beetle. Manual - part 1625

 

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Volkswagen New Beetle. Manual - part 1625

 

 

Significance of 8 digit number block 

SIGNIFICANCE OF 8 DIGIT NUMBER BLOCK SPECIFICATION 

If the specification is obtained: 

z

Briefly increase engine speed (RPM) (rev -up) and then allow engine to run at idle speed for 2 minutes.  

Checking idle speed 

z

Continue running engine at idle speed.  

z

Change to display group 56 as follows:  

z

Press -C- button.  

700 to 750 

RPM 

(2)

range

-

-

-

Significance, see 

CHECKING IDLE 

SPEED

(1)

Engine idling at normal operating temperature for manual transmission

(2)

Engine idling at normal operating temperature for automatic transmission

Significance when display = 1
1 2 3 4 5 6 7 8

Significance

 

            1

Engine Coolant Temperature (ECT) above 80 °C

 

          1  

Speed below 2000 RPM

 

        1    

Throttle valve closed

 

      1      

Oxygen sensor control OK.

 

    1        

Idling switch closed

 

  1          

Air conditioner compressor switched off

  1            

Three Way Catalytic Converter (TWC) temperature over 350 °C

1              

No DTCs recognized by On Board Diagnostic (OBD)

NOTE:

z

Idling speed cannot be adjusted.  

z

Idling speed is tested during the basic setting of the engine.  

z

In the "System in basic setting" function the EVAP canister purge 
regulator valve -N80- is closed and the air conditioner compressor 
switched off.  

WARNING:

The electric coolant fan must not be running.

 

2003 Volkswagen New Beetle GLS 

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

  

z

Press buttons -0-, -5- and -6- for "Display group number 56" and confirm entry with -Q- button. 

Indicated on display (1 to 4 - Display zones) 

Fig. 99: Identifying Scan Tool Display - System In Basic Setting 56 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

Check operating mode in display zone 4. 

Specification: 0x000 (Significance, see OXYGEN SENSOR AND OXYGEN SENSOR CONTROL 
BEFORE THREE WAY CATALYTIC CONVERTER (TWC), CHECKING
 ) 

z

Check specified idle speed in display zone 2. 

Specification: 

Manual transmission 760 RPM 

Automatic transmission 700 RPM 

z

Check actual idle speed in display zone 1. 

Specification: 

Manual transmission 760 to 810 RPM 

1

 )

 

Automatic transmission 700 to 750 RPM 

1

 )

 

1

 ) Engine idling at normal operating temperature

 

 

2003 Volkswagen New Beetle GLS 

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

  

DISPLAY GROUP 56: IDLING TEST - ENGINE IDLING AT NORMAL OPERATING 
TEMPERATURE
 

Significance of 5 digit number block 

SIGNIFICANCE OF 5 DIGIT NUMBER BLOCK SPECIFICATION 

NOTE:

During idling check the EVAP canister purge regulator valve and the air 
conditioner are switched off and the oxygen sensor control learning 
procedure is initiated.

 

Display zones

1

2

3

4

Display group 56: Idling test - Engine idling at normal operating temperature
Display

xxxx RPM

xxxx RPM

xxx.x %

xxxxx

Indicated

Actual engine speed 

(in steps of 10)

Specified engine speed 

(in steps of 10)

Idling 

regulator

Operating conditions

Working 
range

0 to 6800 RPM

-

-5.0 to 
12.0%

-

Specification 760 to 810 RPM 

(1)

 

700 to 750 RPM 

(2)

760 RPM 

(1)

700 RPM 

(2)

-5.0 to 
12.0%

0x000

If the specifications are not obtained, 

see OXYGEN SENSOR AND 

OXYGEN SENSOR CONTROL 

BEFORE THREE WAY 

CATALYTIC CONVERTER 

(TWC), CHECKING , Continuation

-

Significance, see OXYGEN

SENSOR AND OXYGEN

SENSOR CONTROL BEFORE

THREE WAY CATALYTIC

CONVERTER (TWC),

CHECKING

(1)

For manual transmission

(2)

For automatic transmission

NOTE:

z

The value shown in display zone 1 is the actual engine speed.  

z

The value shown in display zone 2 (specified engine speed) is a 
theoretical value calculated by the Motronic Engine Control Module 
(ECM) -J220-.  

z

When the engine is idling the Motronic Engine Control Module (ECM) 
-J220- tries constantly to adjust the actual engine speed so that it 
adapts the specified value.  

z

This means that the actual engine speed when idling should be 
approximately the same as the specified engine speed.  

Significance when display = 1
1

2

3

4

5

Significance

 

 

 

 

1

Air conditioner compressor switched on

 

2003 Volkswagen New Beetle GLS 

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

  

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

  

 

 

 

 

 

 

 

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