Initiating On Board Diagnostic Program

2000 Volkswagen GTI (1J1) L4-1.8L Turbo (AWD)SECTION Initiating On Board Diagnostic Program



Requirements
- Voltage supply and fuses OK
- "Terminal 15 on" required to initiate On Board Diagnostic (OBD) (ignition switched on)


NOTE:
- If the display remains blank, check the VAG1551 voltage supply
See "Electrical Wiring Diagrams.
- Additional operating instructions can be obtained by pressing the VAG 1551 Scan Tool (ST) "HELP" button.
- The -> button is used to advance through the program sequence.
- The "PRINT" button is used for switching on the printer (lamp in button lights up).


- Connect VAG 1551 scan tool. VAG 1551 Scan Tool Connecting
- Switch ignition on.
- Switch printer on with "PRINT" button (lamp in button lights up).
- Press button -1- to select "Rapid data transfer".

Indicated on display


Rapid data transfer HELP
Insert address word XX



Address word for the central locking system: 35

Indicated on display


Rapid data transfer HELP
Insert address word XX



- Press buttons -3- and -5- to insert "Central locking system" address word 35.

Indicated on display


Rapid data transfer Q
35 - Central locking system



- Press -Q- button to confirm input.

Indicated on display


Rapid data transfer
Scan Tool sends address word 35



The control module identification is indicated on the VAG1551 scan too display.


1C0962258 XX Cent. Locking 0001 ->
Coding XXXXX WSC XXXXX



- Press -> button.

Indicated on display (briefly)


Please wait


and then the following appears in the display.

- Press -> button.

Indicated on display


Rapid data transfer HELP
Insert address word XX

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.