Volkswagen New Beetle. Manual - part 1797

 

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Volkswagen New Beetle. Manual - part 1797

 

 

Fig. 40: Example 1: Locating Non-Communicating Control Module 
Courtesy of AUDI OF AMERICA, INC. 

 

2003 Volkswagen New Beetle GLS 

2002-2004 ENGINE PERFORMANCE Self-Diagnostics - 1.9L Turbo Diesel - Beetle, Golf & Jetta (Engine Code ALH)

  

Helpmelearn Repair Manuals 

 

Wednesday, December 14, 2005 8:48:24 AM

Page 100 

© 2004 Mitchell Repair Information Company, LLC. 

Fig. 41: Example 2: Locating Non-Communicating Control Module 
Courtesy of AUDI OF AMERICA, INC. 

 

2003 Volkswagen New Beetle GLS 

2002-2004 ENGINE PERFORMANCE Self-Diagnostics - 1.9L Turbo Diesel - Beetle, Golf & Jetta (Engine Code ALH)

  

Helpmelearn Repair Manuals 

 

Wednesday, December 14, 2005 8:48:24 AM

Page 101 

© 2004 Mitchell Repair Information Company, LLC. 

Fig. 42: Example 3: Locating Non-Communicating Control Module 
Courtesy of AUDI OF AMERICA, INC. 

Test Procedures (ABS) 

1. Turn ignition off. Disconnect ECM harness connector. Connect VAG 1598/31 test box to ECM. See 

CONNECTING VAG TEST BOX . Leave ECM harness connectors disconnected.  

2. Measure resistance between test box socket No. 6 and test box socket No. 7. Resistance should be 60 to 

72 ohms. If resistance is okay go to next step. If resistance is not okay, replace faulty ECM (J248). After 
repairs, erase DTC memory. See CLEARING DIAGNOSTIC TROUBLE CODES (FUNCTION 05) 
under SELF DIAGNOSTIC SYSTEM. Verify repair. Test is complete. Perform ECM relearn procedure. 

 

2003 Volkswagen New Beetle GLS 

2002-2004 ENGINE PERFORMANCE Self-Diagnostics - 1.9L Turbo Diesel - Beetle, Golf & Jetta (Engine Code ALH)

  

Helpmelearn Repair Manuals 

 

Wednesday, December 14, 2005 8:48:24 AM

Page 102 

© 2004 Mitchell Repair Information Company, LLC. 

See TEST DRIVE RELEARN PROCEDURE .  

3. Check wiring for Drive Train CAN-Bus. See appropriate WIRING DIAGRAM under ENGINE 

PERFORMANCE and COMPUTER DATA LINES in SYSTEM WIRING DIAGRAMS. Also see Fig. 
40
 -Fig. 42 . If wiring is okay, go to next step. If wiring is not okay, repair as necessary. After repairs, 
erase DTC memory. See CLEARING DIAGNOSTIC TROUBLE CODES (FUNCTION 05) under 
SELF DIAGNOSTIC SYSTEM. Verify repair. Test is complete. Perform ECM relearn procedure. See 
TEST DRIVE RELEARN PROCEDURE .  

4. Check ABS Control Module (J104) using Automatic Test Sequence. See AUTOMATIC TEST 

SEQUENCE (FUNCTION 00) . Repair or replace as necessary. After repairs, erase DTC memory. See 
CLEARING DIAGNOSTIC TROUBLE CODES (FUNCTION 05) under SELF DIAGNOSTIC 
SYSTEM. Verify repair. Test is complete. Perform ECM relearn procedure. See TEST DRIVE 
RELEARN PROCEDURE 
.  

DTC P1636/18044, DTC P1650/18058 & DTC P3000/19456 

Code Definition 

DTC P1636/18044 
Drive Train CAN-Bus - No Signal From Airbag Control Module (J234) 

DTC P1650/18058 
Drive Train CAN-Bus - No Signal From CAN Bus Interface (J533) 

DTC P3000/19456 
Drive Train CAN-Bus - No Signal From CAN Bus Interface (J533) - Glow Plug Warning Lamp (K29)  

Test Procedures 

1. Turn ignition off. Disconnect ECM harness connector. Connect VAG 1598/31 test box to ECM. See 

CONNECTING VAG TEST BOX (leave ECM harness connectors disconnected).  

2. Measure resistance between test box socket No. 6 and test box socket No. 7. Resistance should be 60 to 

72 ohms. If resistance is okay go to next step. If resistance is not okay, replace faulty ECM (J248). After 
repairs, erase DTC memory. See CLEARING DIAGNOSTIC TROUBLE CODES (FUNCTION 05) 
under SELF DIAGNOSTIC SYSTEM. Verify repair. Test is complete. Perform ECM relearn procedure. 
See TEST DRIVE RELEARN PROCEDURE 

NOTE:

For connector terminal wire colors, see appropriate WIRING DIAGRAM under 
ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS. For component 
locations, see COMPONENT LOCATIONS . 

NOTE:

Before replacing any component, ensure all connectors at component and ECM 
are clean and tight. After making any repairs, disconnect ECM harness 
connector for 10 seconds, connect ECM harness connector and retest system. 
It is necessary to generate an ECM readiness code if ECM memory is cleared, 
battery voltage is disconnected or ECM is disconnected. 

 

2003 Volkswagen New Beetle GLS 

2002-2004 ENGINE PERFORMANCE Self-Diagnostics - 1.9L Turbo Diesel - Beetle, Golf & Jetta (Engine Code ALH)

  

Helpmelearn Repair Manuals 

 

Wednesday, December 14, 2005 8:48:24 AM

Page 103 

© 2004 Mitchell Repair Information Company, LLC. 

 

 

 

 

 

 

 

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