Connecting the fault reader — VW

🧭 Before you start

Fits: VW Passat B5 (3B)

• Special tools named: V.A.G 1551, V.A.G 1552, V.A.G 1551/3
• Renewed: control unit

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• The display fields will be displayed from top to bottom in functions 04 - Basic settings or 08 - Read measured value block.The following test sequences are described for the V.A.G 1551 fault reader.
• If the display does not correspond to the control unit version for the vehicle, renew control unit .

🔧 Engine codes this applies to

📋 Procedure

1. Connect diagnosis cable connector on to diagnosis connection.
2. Depending upon desired function: switch ignition on or start engine , "“Selectable functions”" table.
3. Press button on display for "“Vehicle self-diagnosis”".
4. Press button "“01 - Engine electronics”" on display.
5. Check control unit coding, code control unit if necessary .

6. Press key on display for the desired function. [Note: The display fields will be displayed from top to bottom in functions 04 - Basic settings or 08 - Read measured value block.The following test sequences are described for the V.A.G 1551 fault reader.] [Note: Vehicle system tester V.A.G 1552 can be used instead of fault reader V.A.G 1551, however a print-out is not possible.]
7. Connect fault reader V.A.G 1551 with cable V.A.G 1551/3.
8. Depending upon desired function: switch ignition on or start engine , "“Selectable functions”" table. [Note: If the display remains blank, check voltage supply for diagnostic connector according to fault finding programme:If the display does not indicate as described in the work sequence:Fault reader operating instructionsIf due to an input error "“fault in data transfer!”" is displayed, pull cable off fault reader, reconnect and repeat work steps.]
9. Operate fault reader taking into account the information on the display:
10. Press key 1 for "“Rapid data transfer”".
11. Press keys 0 and 1 for address word "“Engine electronics”" and confirm entry with Q key. [Note: If the display does not correspond to the control unit version for the vehicle, renew control unit .]
12. Check control unit coding , coding engine control unit.
13. Press → button.
14. Further measures see repair procedures.

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