Volkswagen New Beetle. Manual - part 1772

WHEEL ALIGNMENT 

For wheel alignment specifications and procedures, see WHEEL ALIGNMENT SPECIFICATIONS in 
SPECIFICATIONS & PROCEDURES article under WHEEL ALIGNMENT under SUSPENSION. 

 

2003 Volkswagen New Beetle GLS 

2003 SPECIFICATIONS New Beetle

  

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2002-2004 ENGINE PERFORMANCE 

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

INTRODUCTION 

SELF DIAGNOSTIC SYSTEM 

ECM stores DTC(s) related to fuel injection, ignition and emissions systems. If a malfunction occurs, it will be 
indicated by Malfunction Indicator Light (MIL) in instrument cluster. DTCs can be read using scan tool 
connected to Data Link Connector (DLC). See Fig. 1 . 

NOTE:

Before starting work on vehicle read Service Precautions. See SERVICE 
PRECAUTIONS . 

NOTE:

To properly diagnose vehicle, vehicle manufacturer recommends use of Scan 
Tool (VAG 1551/VAG 1552, VAS 5051/VAS 5052) and Test Box (VAG 1598). 
Generic scan tools may not be able to perform all functions that are necessary 
e.g. Readiness Code, Idle Check and Automatic Test Sequence etc. All voltage 
tests should be performed with a Digital Volt-Ohmmeter (DVOM) with a 
minimum 10-megohm input impedance, unless specifically stated differently in 
testing procedures. Ensure ignition switch is in OFF position when performing 
resistance tests. 

NOTE:

Read and record DTCs before starting diagnostic work, some testing 
procedures will set DTC(s). 

NOTE:

When voltage supply to Engine Control Module (ECM) is interrupted, ECM 
retains Diagnostic Trouble Codes (DTCs), but loses all "learned" and "basic" 
values. Serious driveability problems may occur depending on vehicle mileage. 
After reconnecting ECM, it is necessary to perform relearn procedure. See TEST 
DRIVE RELEARN PROCEDURE . 

 

2003 Volkswagen New Beetle GLS 

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

  

 

2003 Volkswagen New Beetle GLS 

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

  

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Fig. 1: Locating Data Link Connector 
Courtesy of VOLKSWAGEN UNITED STATES, INC. 

MALFUNCTION INDICATOR LIGHT (K83) GLOW PLUG LIGHT (K29) 

All models are equipped with a Malfunction Indicator Light (MIL). MIL illuminates when a system failure has 
been detected and DTC has been stored in Engine Control Module (ECM) memory. For location of MIL and 
Glow Plug Light. See Fig. 2 and Fig. 3 .  

 

2003 Volkswagen New Beetle GLS 

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

  

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Fig. 2: Locating MIL & Glow Plug Lights (Beetle) 
Courtesy of VOLKSWAGEN UNITED STATES, 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 

 

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