Volkswagen New Beetle. Manual - part 1976

 

  Index      Volkswagen     Volkswagen New Beetle 1998-2008 year - service repair manual

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  1974  1975  1976  1977   ..

 

 

Volkswagen New Beetle. Manual - part 1976

 

 

Component location of emissions MIL 

Fig. 11: Identifying Component Location Of Emissions MIL 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

Blinking: There is a malfunction that causes damage to the catalytic converter in this driving condition. In 
this case, vehicle must only be driven at reduced performance!  

z

Continuously lit: There is a malfunction that causes increased emissions. Check DTC memory for 
Motronic control module.  

z

DTC memory must still be checked if there are driveability problems or customer complaints and the 
MIL is not lit, since malfunctions can be stored without causing the MIL to light immediately.  

Recommended special tools and equipment 

z

VAG1526 multimeter or VAG1715 multimeter  

z

VAG1594 connector test kit  

z

Wiring diagram  

Test requirement 

z

The respective fuses of instrument cluster must be OK. 

NOTE:

The Malfunction Indicator Lamp (MIL) can blink or remain lit continuously. DTC 
memory must be checked in each case. See DIAGNOSTIC MODE 3: CHECK DTC 
MEMORY .

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 2.0L Generic Scan Tool - New Beetle

  

Fig. 12: Identifying Fuses 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Test sequence 

z

Switch on ignition: The emissions MIL must light up.  

If emissions MIL does not light up when ignition is switched on: 

z

Switch ignition off.  

z

Check wire from ECM to emissions MIL as follows:  

z

Connect test box to control module wiring harness. See TEST BOX FOR WIRING TEST, 
CONNECTING
 .  

Vehicles with engine code AEG 

z

Bridge sockets 2 + 17 of test box with the respective adapter cables.  

Vehicles with engine code AVH, AZG and BDC 

z

Bridge sockets 2 + 47 of test box with the respective adapter cables.  

Continuation for all vehicles 

z

Switch on ignition: Emissions MIL must light up.  

If Malfunction Indicator Lamp (MIL) does not light up: 

z

Switch ignition off.  

z

Remove instrument cluster:  

NOTE:

Fuse holder is located behind access panel at far left end of dash.

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 2.0L Generic Scan Tool - New Beetle

  

See INSTRUMENT CLUSTER . 

z

Check wire connection from Engine Control Module (ECM) to Malfunction Indicator Lamp (MIL) -K83-
according to wiring diagram:  

See appropriate System Wiring Diagram article. 

z

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

z

Generate readiness code. See READINESS CODE, GENERATING .  

If no malfunctions are detected in wire from Engine Control Module (ECM) to Malfunction Indicator Lamp 
(MIL): 

z

Replace Motronic Engine Control Module (ECM) -J220-. See REPLACING ENGINE CONTROL 
MODULE (ECM)
 .  

If emissions MIL lights up when ignition is switched on: 

z

Start engine and let run at idle: Emissions MIL must go out after a few seconds.  

If Malfunction Indicator Lamp (MIL) does not go out: 

z

Switch ignition off.  

z

Remove instrument cluster:  

See INSTRUMENT CLUSTER . 

z

Connect test box to control module wiring harness. See TEST BOX FOR WIRING TEST, 
CONNECTING
 .  

Vehicles with engine code AEG 

z

Check wire connection between test box socket 17 and instrument cluster for short circuit to Ground 
(GND) according to wiring diagram:  

See appropriate System Wiring Diagram article. 

Vehicles with engine code AVH, AZG and BDC 

z

Check wire connection between test box socket 47 and instrument cluster for short circuit to Ground 
(GND) according to wiring diagram:  

See appropriate System Wiring Diagram article. 

Continuation for all vehicles 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 2.0L Generic Scan Tool - New Beetle

  

z

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

z

Generate readiness code. See READINESS CODE, GENERATING .  

If no malfunctions are detected in wire from Engine Control Module (ECM) to Malfunction Indicator Lamp 
(MIL): 

z

Replace Motronic Engine Control Module (ECM) -J220-. See REPLACING ENGINE CONTROL 
MODULE (ECM)
 .  

DIAGNOSTIC MODE, SELECTING 

Recommended special tools and equipment 

z

VAS 5052 Vehicle Diagnostic and Information System with 

Fig. 13: Identifying VAS 5052 Vehicle Diagnostic And Information System (Selecting Diagnostic 
Mode)
 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

z

VAS 5052/3 diagnostic cable  

Address word 33 - On-Board Diagnostic (OBD) 

Function 

Via the diagnostic tester, different diagnostic modes can be selected under "address word 33 - On-Board 
Diagnostic (OBD)". 

The following diagnostic modes monitor all components and systems which influence the emission quality. 

Diagnostic mode 1: Check measured values 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 2.0L Generic Scan Tool - New Beetle

  

 

 

 

 

 

 

 

Content   ..  1974  1975  1976  1977   ..