Scan Tool Connecting
Requirements
- Fuses 4, 5, 13, 23, 24, and 27 OK
- Ground connections OK.
Connecting VAG 1551:
Procedure
- Switch OFF ignition
- Remove floor covering in footwell on passenger side to expose the Data Link Connectors (DLC)'s
Connect Scan Tool VAG 1551 using adaptor cable VAG 1551/1 to DLC.
- First connect black adaptor cable connector (voltage supply) to DLC # 1. These displays appear alternately as shown:
VAG self-diagnosis HELP
1 - Rapid data transfer
OR
VAG self-diagnosis HELP
2 - Blink code output
Note: Do not connect the white adaptor cable connector if there is no display. Instead, check the voltage supply for the scan tool, Refer to Data Link Connector / Testing and Inspection.
- Connect white adaptor cable connector to DLC # 2.
- The blue connector is not used
- To obtain additional operating instructions press the HELP button.
- To step through the program sequence, press the arrow button
Selectable Functions
- Depending on which function is required; either switch ON ignition or start engine and let idle
Note: If engine does not start, crank engine 4 to 6 seconds and leave ignition switched ON.
- Press button 1 to select operating mode "Rapid data transfer", Display will appear as follows:
Rapid data transfer HELP
Enter address word XX
OR
- Press button 2 to select operating mode "Blink code output", Display will appear as follows:
Blink code output HELP
Activate with (arrow) key
Rapid data transfer
After selecting operating mode Rapid data transfer select diagnostic function.
- Engine Electronics 01
- Transmission Electronics 02
- Press 0 and 1 buttons to select address word 01 "Engine electronics".Display will appear as follows:
Rapid data transfer Q
01-Engine electronics
- Press Q button to enter input. The engine control module identification number is indicated via the display, for example: 021 906 258 B. Display will appear as follows:
O21906258 B ENGINE
Coding 1
Note: Only during idle speed do correct specifications regarding the engine control module number and related coding occur.
- Press (arrow) button. If display appears as follows:
Rapid data transfer HELP
ECM does not answer\
- Print out a list of possible causes by pressing the VAG 1551 HELP button
- After eliminating possible causes, reselect operating mode and address word, display appears as follows:
Rapid data transfer HELP
Select function XX
- Select function code.
- Diagnostic Trouble Code (DTC) Memory 02
- Output Diagnostic Test Mode (DTM) 03
- Basic Engine Setting 04
- Erase DTC Memory 05
- End Output 06
- Press Q button to enter input and see the proper procedure article for your selection
Note: If function 02 Check DTC memory is to be selected
- Switch on the printer using the print button, lamp in print button lights
- When the printer is switched ON stored malfunctions are automatically printed out in sequence