With VAG 1551/1552

Diagnostic Trouble Code (DTC) Memory, Checking And Erasing

- Connect vehicle diagnostic, testing and information system VAS5051 or VAG1551 scan tool and select "Engine Electronics" by entering address word. When doing this the engine must be idling. Connecting VAS 5051 Scan Tool

Only if engine does not start:
- Check engine with ignition switched on.
- Switch on printer with PRINT button (indicator light in button lights up).

Indicated on display


Rapid data transfer HELP
Select function XX


- Operate scan tool according to information on display:
- Press buttons -0- and -2- to select function "Check DTC Memory" and confirm entry with -Q- button.

Indicated on display


No DTC recognized


- Press -> button.

or

Indicated on display


X DTC recognized


The stored malfunctions will be displayed and printed out in sequence.
- Locate and eliminate printed out malfunctions according to DTC table. Testing and Inspection


NOTE:
- If no malfunction is stored in the DTC memory, do not erase memory, otherwise readiness code is reset
- If the DTC memory was erased, generate new readiness code. Readiness Code, Generating


- Press -> button.

Indicated on display:


Rapid data transfer HELP
Select function XX


- Press buttons -0- and -5- to select function "DTC Memory" and confirm entry with -0- button.

NOTE:


Indicated on display.

Attention!
DTC memory was not checked


Test sequence has not been followed.
- Check DTC memory.

Under the following conditions the DTC memory will NOT be erased:
- If Ignition was switched off after DTC memory has been checked.
- A static malfunction has not been eliminated.

Indicated on display:


Rapid data transfer ->
DTC Memory is erased


- Press -> button.
- After repairs, check DTC memory again.


NOTE: During testing and repair work, malfunctions can be recognized from other control modules (e.g. disconnected harness connectors). Therefore on completion, the DTC memories of all control modules must be checked and erased.