Volkswagen New Beetle. Manual - part 1428

 

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Volkswagen New Beetle. Manual - part 1428

 

 

z

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

Indicated on display 

Fig. 42: V.A.G 1551 Scan Tool Display - Checking EVAP Canister Purge Regulator Valve (2 Of 4) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

Press buttons -0-, -7- and -0- for "Display group number 70" and confirm entry with -Q- button.  

Indicated on display: (1-4 = Display zones) 

Fig. 43: V.A.G 1551 Scan Tool Display - Checking EVAP Canister Purge Regulator Valve (3 Of 4) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

Press button -4- for "Basic setting" function ("Tank venting valve diagnosis" will be initiated)  

NOTE:

The engine must not be loaded during this diagnosis because the diagnosis will 
be interrupted and will not be started again until the engine is revved-up.

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE Fuel System - New Beetle, 1.8L (APH, AWV & AWP)

  

Indicated on display: (1-4 = Display zones) 

Fig. 44: V.A.G 1551 Scan Tool Display - Checking EVAP Canister Purge Regulator Valve (4 Of 4) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

When the diagnosis is initiated by the Engine Control Module, the display in display zone 4 jumps from "Test 
OFF" to "Test ON". 

z

Run engine at idling speed until specification "EVAP OK" is displayed in display zone 4.  

DISPLAY JUMPS FROM "TEST ON" TO "TEST OFF" 

If "EVAP not OK" appears in display zone 4:

NOTE:

If the display jumps from "Test ON" to "Test OFF" during the test, rev up briefly 
and the test will be repeated.

-

Display zones

1

2

3

4

Display group 70: Evaporative Emission (EVAP) system diagnosis (tank venting system)
Display

xxx. x %

xxx. x %

xxx %

Test OFF/Test ON

EVAP

(1)

 OK

EVAP n.OK

Indicated

EVAP canister purge 

regulator valve opening 

during diagnosis

oxygen sensor 

control, Bank 1

EVAP canister purge 

regulator valve 

condition

Diagnosis condition 

and Diagnosis result

Working 
range

0.0-100.0%

-100.0-100.0%

0-199%

-

Specified 
value

-

-

-

EVAP OK.

(1)

TEV means EVAP canister purge regulator valve.

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE Fuel System - New Beetle, 1.8L (APH, AWV & AWP)

  

z

Initiate output diagnostic test mode and activate EVAP Canister Purge Regulator Valve -N80-: 

See Output Diagnostic Test Mode (DTM), Initiating 

z

Check DTC memory. 

See Diagnostic Trouble Code (DTC) Memory, Checking And Erasing 

z

Read readiness code. 

See Readiness Code, Displaying 

If DTC memory has been erased or Engine Control Module separated from permanent (battery) positive, 
readiness code must be generated again. 

See Diagnostic Trouble Code (DTC) Memory, Checking And Erasing 

If the specification "EVAP OK" is obtained: 

z

Press --> button.  

z

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

z

Switch ignition off.  

EVAPORATIVE EMISSION (EVAP) SYSTEM, CHECKING FOR LEAKS 

Special tools and equipment 

z

VAG 1551 Scan Tool 

Fig. 45: Identifying VAG 1551 Scan Tool 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE Fuel System - New Beetle, 1.8L (APH, AWV & AWP)

  

z

VAG 1551/3 Cable 

Fig. 46: Identifying VAG 1551/3 Cable 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Test conditions 

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Fuse No. 43 must be OK 

Fig. 47: Identifying Location Of Fuse No. 43 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

No malfunction stored in DTC memory 

NOTE:

The VAG 1552 vehicle system tester can be used instead of the VAG 1551 
Scan Tool, however a print-out is not possible.

NOTE:

Fuse box is located behind access panel at far left end of dash.

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE Fuel System - New Beetle, 1.8L (APH, AWV & AWP)

  

 

 

 

 

 

 

 

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