Volkswagen New Beetle. Manual - part 1702

 

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Volkswagen New Beetle. Manual - part 1702

 

 

z

Press buttons -0-, -5- and -0- for "Display group number 50" and confirm entry with -Q- button. 

Indicated on display (1 to 4 - Display zones) 

Fig. 155: Identifying Scan Tool Display - Signal From/To Air Conditioning, Checking (3 Of 3) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

Check specifications for air conditioner (display zones 3 and 4)  

DISPLAY GROUP 50: SIGNALS TO MOTRONIC ENGINE CONTROL MODULE (ECM) -J220- 

 

Display zones

1

2

3

4

Display group 50: Signals to Motronic Engine Control Module (ECM) -J220-
Display

xxxx RPM

xxxx RPM

A/C-LOW 

A/C-HIGH

Compr. ON

Compr. OFF

Indicated

Actual 
engine 

speed (in 

steps of 10)

Specified 

engine speed 

(in steps of 10)

Air conditioner status

Air conditioner compressor status

Working 
range

0 to 6800 
RPM

-

-

-

Specification 760 to 810 

RPM 

(1)

 

700 to 750 

RPM 

(2)

760 RPM 

(1)

 

700 RPM 

(2)

A/C -LOW

Compressor on:

Compr. ON

Compressor off:

Compr. OFF

-

-

If specification is not obtained, see SIGNAL 

FROM CLUTCH VACUUM VENT 

VALVE SWITCH -F36-, CHECKING, 

VEHICLES FROM MY 2001 , 

 

2003 Volkswagen New Beetle GLS 

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

  

z

Observe display in display zone 4. It must show: Compr. OFF.  

z

Switch on air conditioning system.  

z

Select lowest temperature and highest blower speed. 

Display in display zone 4 must change to Compr. ON. 

z

Floor accelerator pedal quickly and then release (brief burst of throttle). 

Display in display zone 4 must change from Compr.ON to Compr. OFF for a few seconds (compressor 
switch-off when vehicle is accelerating). 

z

Press --> button.  

z

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

z

Switch off ignition. 

Continuation 

If the display does not change: 

z

Remove inner plenum chamber cover at 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. 

Continuation

(1)

Engine idling at normal operating temperature for manual transmission

(2)

Engine idling at normal operating temperature for automatic transmission

 

2003 Volkswagen New Beetle GLS 

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

  

Fig. 156: Connecting VAG 1598/31 Test Box To Control Module Wiring Harness 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

Check wiring for open circuit between test box sockets 40 + 41 and air conditioner system using 
Electrical Wiring Diagram. 

Wire resistance: max. 1.5 ohm 

If no wiring malfunctions can be found: 

z

Check function of air conditioner control module.  

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

  

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

Signal from Clutch Vacuum Vent Valve Switch -F36-, checking, vehicles from MY 2001 

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  

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Electrical Wiring Diagram  

Test conditions 

z

All fuses must be OK. Fuse holder is 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

  

 

 

 

 

 

 

 

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