Volkswagen New Beetle. Manual - part 1504

 

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Volkswagen New Beetle. Manual - part 1504

 

 

Courtesy of VOLKSWAGEN OF AMERICA, INC.

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Also check wires for short circuit to each other. 

Specified value:INFINITY ohm 

If no malfunctions are found in the wires and there was voltage between terminals 1 + 3: 

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Replace Camshaft Position (CMP) sensor: 

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Vehicles with engine code APH, see item 7 .  

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Vehicles with engine code AWP, AWV, see item 7 .  

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Erase DTC memory of Engine Control Module (ECM), see DIAGNOSTIC MODE 4: RESET/ERASE 
DIAGNOSTIC DATA
 .  

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generate readiness code, see READINESS CODE, GENERATING . 

If no malfunctions are found in wires and there was no voltage between terminals 1 + 3: 

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Replace Engine Control Module (ECM), see REPLACING ENGINE CONTROL MODULE (ECM) . 

Ignition coils with power output stages, checking 

Recommended special tools and equipment 

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VAG1526 multimeter or VAG1715 multimeter  

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VAG1527 voltage test lamp  

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VAG1594 connector test kit  

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Wiring diagram  

Test requirements 

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Respective fuses must be OK.  

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Fuel Pump (FP) Relay -J17- must be OK. Fuse box is located behind access panel at far left end of dash. 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Ignition-Glow Plug System, 1.8L Generic Scan Tool - New Beetle

  

Fig. 10: Identifying Fuses Box 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Battery voltage must be at least 11.5 volts.  

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All electrical consumers such as, for example, lights and rear window defroster must be switched off.  

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Parking brake must be engaged or else daylight driving lights will be switched on.  

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If vehicle is equipped with an A/C system, it must be switched off.  

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Ground (GND) connections between engine and chassis must be OK.  

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Engine speed (RPM) sensor must be OK, checking, see CHECK ENGINE SPEED (RPM) SENSOR .  

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Camshaft Position (CMP) sensors must be OK, checking, see CHECK CAMSHAFT POSITION 
(CMP) SENSOR
 .  

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Ignition switched off.  

Test sequence 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Ignition-Glow Plug System, 1.8L Generic Scan Tool - New Beetle

  

Checking voltage supply 

Vehicles with engine code APH 

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Disconnect 4-pin connector -2- from ignition coil -1- to be checked. 

Fig. 11: Disconnecting 4-Pin Connector From Ignition Coil (Engine Code APH) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

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Measure supply voltage between terminals 1 + 2 and 1 + 4 of disconnected connector using the 
multimeter.  

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Switch on ignition. 

Specified value: at least 11.5 V 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Ignition-Glow Plug System, 1.8L Generic Scan Tool - New Beetle

  

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Switch ignition off. 

If there is no voltage: 

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Check wire between 4 -pin connector terminal 1 and Motronic Engine Control Module (ECM) Power 
Supply Relay (main relay) for open circuit according to wiring diagram. 

Wire resistance: max. 1.5 ohm 

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Check wires between 4 -pin connector and Ground (GND) for open circuit according to wiring diagram. 

Terminal 2 and Ground (GND) 

Terminal 4 and Ground (GND) 

Wire resistance: max. 1.5 ohm 

Fig. 12: Identifying 4-Pin Harness Connector Terminals (Engine Code APH) 
Courtesy of VOLKSWAGEN OF AMERICA, INC.

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Ignition-Glow Plug System, 1.8L Generic Scan Tool - New Beetle

  

 

 

 

 

 

 

 

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