Volkswagen New Beetle. Manual - part 1246

 

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Volkswagen New Beetle. Manual - part 1246

 

 

Fig. 25: Identifying Special Tools Display (3 Of 3) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Display in field 2 must fluctuate every 10 seconds between EGR active or EGR inactive (n.aktiv). 

Displays in display zones 3 and 4 must fluctuate within following control range: 

See Mass Air Flow (MAF) Sensor -G70-, Checking . 

If EGR NOT active: 

Specification display zone 3: 420 to 560 mg/stroke 

Specification display zone 4: 0 to 5% 

NOTE:

If a constant value of 550 mg/H is indicated in display zone 3, check Mass Air 
Flow sensor.

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE Exhaust System, Emission Controls - 1.9L 4-Cyl. - ALH, New Beetle

  

If EGR active: 

Specification display zone 3: 170 to 340 mg/stroke 

Specification display zone 4: 95 to 100% 

If specifications not obtained: 

z

Check mechanical EGR valve. See EXHAUST GAS RECIRCULATION (EGR) VALVE, 
CHECKING
 .  

z

Check vacuum hoses. See VACUUM HOSE CONNECTIONS, DIAGRAM .  

z

Check EGR Vacuum Regulator solenoid valve as follows:  

z

Press --> button.  

z

Press 0 and 6 buttons to select Function 06: "End transfer"  

z

Press Q button to enter input.  

z

Switch ignition off.  

z

Disconnect harness connector -1- from EGR valve -2-. 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE Exhaust System, Emission Controls - 1.9L 4-Cyl. - ALH, New Beetle

  

Fig. 26: Locating Harness Connector 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

Measure resistance across valve. 

Specification: 14 to 20 ohms 

If specification not obtained: 

z

Replace EGR Vacuum Regulator solenoid valve -N18-. 

If specification obtained: 

z

Switch ignition on.  

NOTE:

At room temperature, resistance lies in the lower tolerance range and in 
the upper range at operating temperature.

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE Exhaust System, Emission Controls - 1.9L 4-Cyl. - ALH, New Beetle

  

z

Measure supply voltage at valve connector terminal 1 and at engine Ground. 

Fig. 27: Identifying EGr Vacuum Regulator Solenoid Valve Connector Terminal 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Specification: approx. battery voltage 

If specification not obtained: 

z

Switch ignition off.  

z

Connect Test Box VAG 1598/22 to ECM wiring harness. 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE Exhaust System, Emission Controls - 1.9L 4-Cyl. - ALH, New Beetle

  

 

 

 

 

 

 

 

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