Volkswagen New Beetle. Manual - part 1934

 

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Volkswagen New Beetle. Manual - part 1934

 

 

Fig. 4: Identifying VAG1598/22 Test Box
Courtesy of VOLKSWAGEN OF AMERICA, INC.
 

Vehicles with 121-pin control module 

z

VAG1598/31 test box 

Fig. 5: Identifying VAG1598/31 Test Box 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Requirement 

z

Ignition switched off.  

Work procedure 

z

Remove inner cover of plenum chamber, left side:  

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Then disengage connector from control module and disconnect.  

Vehicles with 80-pin control module 

z

Connect VAG1598/22 test box at control module wiring harness. 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Generic Scan Tool, 1.9L ALH & BEW- New Beetle

  

Fig. 6: Connecting VAG1598/22 Test Box At Control Module Wiring Harness 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Vehicles with 121-pin control module 

z

Connect VAG1598/31 test box at control module wiring harness. The control module for Diesel -Direct 
fuel injection system is not connected during this. 

Fig. 7: Connecting VAG1598/31 Test Box At Control Module Wiring Harness 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Continuation for all vehicles 

When harness connectors are disconnected from the control module for Diesel-Direct fuel injection system or 
the battery is disconnected, all adaptation values in the control module are erased. DTC memory content will 
remain intact however. If the engine is started after this, rough, uneven idle can result. In this case, the readiness 
code must be generated again. See READINESS CODE, GENERATING . 

Malfunction Indicator Lamp (MIL) in instrument cluster 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Generic Scan Tool, 1.9L ALH & BEW- New Beetle

  

Meaning of exhaust MIL 

The Malfunction Indicator Lamp (MIL) lights up when exhaust relevant malfunctions are recognized by the 
control module for Diesel-Direct fuel injection system. 

Component location of exhaust MIL: 

Fig. 8: Identifying Location Of Exhaust Malfunction Indicator Lamp 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

1. Exhaust Malfunction Indicator Lamp (MIL)  

2. Glow Plug Indicator Light  

Glow Plug Indicator Light has a dual function: 

z

Blinking: Malfunctions were detected which influence drivability.  

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Lighting up when ignition is switched on: Normally appears when starting up a cold diesel engine.  

DIAGNOSTIC MODE, SELECTING 

Recommended special tools and equipment: 

z

VAS 5052 Vehicle Diagnostic and Information System with 

NOTE:

z

The exhaust Malfunction Indicator Lamp (MIL) is switched on as soon as 
malfunctions are detected that increases emissions. DTC memory must be 
checked in this case. See DIAGNOSTIC MODE 3: CHECK DTC MEMORY .  

z

DTC memory must still be checked if there are drivability problems or 
customer complaints and the MIL is not lit, since malfunctions can be 
stored without causing the MIL to light immediately.  

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Generic Scan Tool, 1.9L ALH & BEW- New Beetle

  

Fig. 9: Identifying Special Tool VAS 5052 Vehicle Diagnostic And Information System 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

VAS 5052/3 diagnostic cable  

Address word 33 - On-Board Diagnostic (OBD) 

Function 

Via the diagnostic tester, different diagnostic modes can be selected under "address word 33 - On-Board 
Diagnostic (OBD)". 

The following diagnostic modes monitor all components and systems which influence the emission quality. 

Diagnostic mode 1: Check measured values 

Requirement 

z

Coolant temperature must be at least 80 °C, PID 5, Coolant temperature.  

Work procedure 

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Connect diagnostic tester. See DIAGNOSTIC TESTER, CONNECTING .  

z

Depending on the desired operating condition: switch on ignition 

or start engine and let run at idle. 

z

Under address word 33, select "Diagnostic mode 1: Check measured values."  

z

Select the desired measured value(s) "PID XX".  

NOTE:

z

The specified values for the respective measuring values can be found at 
the respective component and function tests.  

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Generic Scan Tool, 1.9L ALH & BEW- New Beetle

  

 

 

 

 

 

 

 

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