Volkswagen New Beetle. Manual - part 1886

 

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Volkswagen New Beetle. Manual - part 1886

 

 

Test Requirements 

Ensure battery is okay. Ensure all fuses are okay, battery voltage is at least 11.5 volts and fuel pump relay is 
okay. Ensure all electrical accessories are off and A/C is off.  

Test Procedure 

1. Connect scan tool. See RETRIEVING DIAGNOSTIC TROUBLE CODES . Turn ignition on, engine 

off. Following scan tool manufacturer's instructions, check Transmission Control Module (J217) and 
ABS Control Module (J104) for DTCs. If no DTCs are present, go to next step. If DTC(s) are present, 
repair as necessary. After repairs, erase DTC memory. Verify repair. Test is complete. Perform ECM 
relearn procedure. See TEST DRIVE RELEARN PROCEDURE .  

2. Check wiring between Transmission Control Module (J217), ABS Control Module (J104) and ECM 

(J220) for open or short circuits. See appropriate WIRING DIAGRAM under ENGINE 
PERFORMANCE in SYSTEM WIRING DIAGRAMS. See Fig. 61 , Fig. 62 and Fig. 63 . If wiring is 
okay, go to next step. If wiring is not okay, repair as necessary. After repairs, erase DTC memory. Verify 
repair. Test is complete. Perform ECM relearn procedure. See TEST DRIVE RELEARN 
PROCEDURE 
.  

3. Check centralized matching resistor in ECM. Turn ignition off. Connect ECM to test box, leave ECM 

harness connector disconnected from test box. Connect Test Box (VAG 1598/31). See CONNECTING 
VAG TEST BOX 
. Using DVOM, check resistance between test box sockets No. 58 and 60. Resistance 
should be 60-72 ohms. If resistance is not okay, replace faulty ECM. See ENGINE CONTROL 
MODULE REMOVAL & INSTALLATION 
. After repairs, erase DTC memory. Verify repair. Test is 
complete. Perform ECM relearn procedure. See TEST DRIVE RELEARN PROCEDURE 

transferring data via a CAN (Controller Area Network) data bus. Data bus-
compatible control modules are connected together via two data bus wiring 
twisted together (CAN high and CAN low) and exchange information 
(messages). If information is not available in the CAN data bus from any one of 
the control modules in the CAN data bus system it will be recognized as a 
malfunction by the engine control module as well as other CAN data bus control 
modules. The CAN data bus requires a matching resistor to function fault-free. 
This central matching resistor is located in the engine control module. 

NOTE:

Instrument Cluster Control Module (J285) and Can Data Bus OBD Interface 
(J533) are integral parts of the instrument cluster. If instrument cluster is 
replaced, Can Data Bus OBD Interface (J533) must be coded. See CAN DATA 
BUS OBD INTERFACE (J533) CODING . 

 

2003 Volkswagen New Beetle GLS 

2002-2003 ENGINE PERFORMANCE Self-Diagnostics - 1.8L Turbo

  

Helpmelearn Repair Manuals 

 

Wednesday, December 14, 2005 8:44:43 AM

Page 166 

© 2004 Mitchell Repair Information Company, LLC. 

Fig. 61: Example 1: Locating Non-Communicating Control Module 
Courtesy of AUDI OF AMERICA, INC. 

 

2003 Volkswagen New Beetle GLS 

2002-2003 ENGINE PERFORMANCE Self-Diagnostics - 1.8L Turbo

  

Helpmelearn Repair Manuals 

 

Wednesday, December 14, 2005 8:44:43 AM

Page 167 

© 2004 Mitchell Repair Information Company, LLC. 

Fig. 62: Example 2: Locating Non-Communicating Control Module 
Courtesy of AUDI OF AMERICA, INC. 

 

2003 Volkswagen New Beetle GLS 

2002-2003 ENGINE PERFORMANCE Self-Diagnostics - 1.8L Turbo

  

Helpmelearn Repair Manuals 

 

Wednesday, December 14, 2005 8:44:43 AM

Page 168 

© 2004 Mitchell Repair Information Company, LLC. 

Fig. 63: Example 3: Locating Non-Communicating Control Module 
Courtesy of AUDI OF AMERICA, INC. 

DTC P0601/16985, DTC P0602/16986, DTC P0604/16988, DTC P0605/16989 & DTC P0606/16990 

Code Definition 

z

DTC P0601/16985: ECM (J220) - Malfunction  

z

DTC P0602/16986: ECM (J220) - Programming Malfunction  

z

DTC P0604/16988: ECM (J220) - Malfunction  

z

DTC P0605/16989: ECM (J220) - Malfunction 

 

2003 Volkswagen New Beetle GLS 

2002-2003 ENGINE PERFORMANCE Self-Diagnostics - 1.8L Turbo

  

Helpmelearn Repair Manuals 

 

Wednesday, December 14, 2005 8:44:44 AM

Page 169 

© 2004 Mitchell Repair Information Company, LLC. 

 

 

 

 

 

 

 

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