Volkswagen New Beetle. Manual - part 1356

 

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Volkswagen New Beetle. Manual - part 1356

 

 

Fig. 175: Scan Tool Display - Throttle Position Sensor, From MY 99 (6 Of 6) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

On vehicles with an automatic transmission, the kickdown switch pressure point must be distinctly felt before 
the Wide Open Throttle (WOT) stop position is reached. 

If specified end value not reached: 

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Replace Throttle Position sensor -G79-  

If display does not change or is irregular: 

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Check Throttle Position sensor as follows:  

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Switch OFF ignition.  

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Disconnect harness connector for sensor. See DIESEL INJECTION SYSTEM, COMPONENT 

 

2003 Volkswagen New Beetle GLS 

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

  

LOCATIONS OVERVIEW .  

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

Fig. 176: Connecting VAG1598/22 (Or 1598/31) Test Box To ECM Wiring Harness (From MY 99)
Courtesy of VOLKSWAGEN OF AMERICA, INC.
 

Check following combinations for open circuits and/or short to positive or negative: 

 

2003 Volkswagen New Beetle GLS 

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

  

Fig. 177: Identifying Throttle Position Sensor Harness Connector Terminals (From MY 99) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Wiring between connector terminal 1 and Test Box socket 8.  

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Wiring between connector terminal 2 and Test Box socket 11.  

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Wiring between connector terminal 3 and Test Box socket 23.  

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Wiring between connector terminal 4 and Test Box socket 24.  

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Wiring between connector terminal 5 and Test Box socket 12.  

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Wiring between connector terminal 6 and Test Box socket 25.  

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Correct any open/short circuit as required.  

If neither open nor short circuit exists: 

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Replace Engine Control Module -J248-. 

 

2003 Volkswagen New Beetle GLS 

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

  

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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 .  

Transmission range selector signal, checking 

The Engine Control Module (ECM) receives the Transmission Range change signal from the Transmission 
Control Module (TCM) via the data bus. The ECM briefly reduces the injection quantity and thus reduces the 
torque and resulting shift jolt. 

Special tools 

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VAG1551/1552 Scan Tool using VAG1551/3 Adapter cable  

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VAG1598/22 Test Box (MY 1999)  

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VAG1598/31 Test Box (from MY 2000)  

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Fluke 83 multimeter  

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VW 1594 Adapter kit  

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Wiring diagram  

Test sequence 

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Connect VAG1551/1552 Scan Tool. See VAG1551/1552 SCAN TOOL, CONNECTING and start 
engine and let idle.  

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

Display will appear as shown (example only):

 

2003 Volkswagen New Beetle GLS 

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

  

 

 

 

 

 

 

 

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