Volkswagen New Beetle. Manual - part 1373

If specification not obtained: 

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Replace Engine Speed sensor -G28-.  

See ENGINE, DISASSEMBLING AND ASSEMBLING . 

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Display the Readiness code. See READINESS CODE, DISPLAYING .  

If DTC memory was erased: 

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Set the readiness code. See READINESS CODE, SETTING .  

If specification obtained: 

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Connect VAG1598/22 (or 1598/31) Test Box to ECM wiring harness. 

Fig. 33: Connecting VAG1598/22 (Or 1598/31) Test Box To ECM Wiring Harness 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Check wiring for open circuit between Test Box and 3-pin harness connector using Wiring diagram. 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Diesel Fuel Injection, 1.9L ALH - New Beetle

  

Fig. 34: Identifying Engine RPM Sensor Harness Connector Terminals 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Up to MY 1999 

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Terminal 1 + socket 69  

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Terminal 2 + socket 67  

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Terminal 3 + socket 71  

From MY 2000 

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Terminal 1 + socket 102  

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Terminal 2 + socket 110  

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Terminal 3 + socket 86  

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Wire resistance: 1.5ohm maximum  

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Check wiring for short circuit to one another at 3-pin harness connector using Wiring diagram.  

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Specification: INFINITY ohm  

If wiring OK: 

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Replace Engine Control Module -J248-. See Engine Control Module (ECM), replacing .  

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Display the Readiness code. See READINESS CODE, DISPLAYING .  

If DTC memory was erased: 

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Set the readiness code. See READINESS CODE, SETTING .  

Manifold Absolute Pressure (MAP) Sensor -G71- and Barometric Pressure (BARO) Sensor -F96-, checking

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Diesel Fuel Injection, 1.9L ALH - New Beetle

  

The BARO -F96- sensor is located in the Engine Control Module - Direct Injection System. The intake 
manifold pressure sensor is a separate component and is located in the pipe between the charge air cooler and 
intake manifold. 

Special tools 

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VAG1551/1552 Scan Tool using VAG1551/3 Adapter cable  

Test sequence 

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Connect VAG1551/1552 Scan Tool. See VAG1551/1552 SCAN TOOL, CONNECTING .  

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Switch ON ignition but do not start engine.  

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Press -0- and -1- buttons to select Address word 01: "Engine electronics"  

Display will appear as shown (example only): 

Fig. 35: Scan Tool Display - MAP Sensor & BARO Sensor (1 Of 5) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Press --> button.  

Display will appear as shown: 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Diesel Fuel Injection, 1.9L ALH - New Beetle

  

Fig. 36: Scan Tool Display - MAP Sensor & BARO Sensor (2 Of 5) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Press -0- and -8- buttons to select Function 08: "Read measuring value block".  

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Press -Q- button to enter input.  

Display will appear as shown: 

Fig. 37: Scan Tool Display - MAP Sensor & BARO Sensor (3 Of 5) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Press -0-, -1- and -0- buttons to select "Display group 10".  

0 mg/H 1027 mbar 1013 mbar 0.0 % 

Compare Display zone 2 (Barometric Pressure (BARO) Sensor -F96-) with Display zone 3 (Manifold Absolute 
Pressure (MAP) Sensor -G71-). 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Diesel Fuel Injection, 1.9L ALH - New Beetle