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HOMESERVICE MANUALSVOLKSWAGEN2002GOLF GLS, 2.0 K, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 14 (ON BOARD DIAGNOSTIC (OBD), GENERIC SCAN TOOL - 1.9L TDI, ALH, BEW (A4 PLATFORM))ST - GENERIC SCAN TOOLGENERAL INFORMATION FOR ON BOARD DIAGNOSTIC (OBD)ON BOARD DIAGNOSTIC (OBD), TECHNICAL DATA
2002 Volkswagen Golf GLS, 2.0 K, Standard

On Board Diagnostic (OBD), technical data

2002 Volkswagen Golf GLS, 2.0 K, StandardSECTION On Board Diagnostic (OBD), technical data
WARNING: This page is about a different variant/trim than selected.

Control module identification 

The control module version is displayed by selecting "Diagnostic mode 9: Vehicle information" under address word 33; see DIAGNOSTIC MODE 9: VEHICLE INFORMATION .

Equipment of control module for Diesel-Direct fuel injection system 

DIESEL CONTROL MODULE SPECIFICATIONS

Engine Code ALH Model year up to 04.99 ALH Model year 05.99 and up
System identification EDC (Electronic Diesel Control) EDC (Electronic Diesel Control)
Equipment of control module for Diesel-Direct fuel injection system 80 121
Emissions limiting values according to Tier 1(1) Tier 1(1)
On Board Diagnostic (OBD) OBD II OBD II
DTC memory Permanent memory(2) Permanent memory(2)
Memory for adaptation values Temporary memory(3) Temporary memory(3)
Intake manifold change-over No No
Camshaft adjustment No No
Boost pressure regulation Yes Yes
Exhaust Gas Recirculation (EGR) Yes Yes
(1) Tier 1 = Non -Low Emission Vehicles (emission values max. 0.25 g/mi HC)
(2) Independent of voltage supply.
(3) Values are erased when voltage supply is interrupted.

Selectable diagnostic modes under address word 33 - OBD 

NOTE: The conditions required for selecting the desired diagnostic mode are listed in the following table:
SELECTABLE DIAGNOSTIC MODES UNDER ADDRESS WORD 33 - OBD

Diagnostic mode Requirement:
Selectable diagnostic modes under address word 33 - OBD
  • engine off
  • Ignition switched on
  • Engine running at idle
  • Vehicle in drive mode
Mode 1: Check measured values See DIAGNOSTIC MODE 1: CHECK MEASURED VALUES  Yes Yes Yes
Mode 2: Check operating conditions See DIAGNOSTIC MODE 2: CHECK OPERATING CONDITIONS  Yes Yes Yes
Mode 3: Check DTC Memory See DIAGNOSTIC MODE 3: CHECK DTC MEMORY  Yes(1) Yes Yes
Mode 4: Reset/erase diagnostic data See DIAGNOSTIC MODE 4: RESET/ERASE DIAGNOSTIC DATA  Yes Yes Yes
Mode 6: Check test results of components that are not continuously monitored See DIAGNOSTIC MODE 6: CHECK TEST RESULTS OF COMPONENTS THAT ARE NOT CONTINUOUSLY MONITORED  Yes(2) Yes(2) Yes(2)
Mode 7: Check test results of components that are continuously monitored See DIAGNOSTIC MODE 7: CHECK TEST RESULTS OF COMPONENTS THAT ARE CONTINUOUSLY MONITORED  Yes(1) Yes Yes
Mode 9: Vehicle information See DIAGNOSTIC MODE 9: VEHICLE INFORMATION  Yes Yes Yes
(1) Perform only with ignition switched on when engine does not start (operate starter beforehand for at least 6 seconds).

(2) Test -ID 10 and Test-ID 12 can only be performed with engine at standstill and ignition switched on.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.