Connecting and Operating VAG 1551 Scan Tool
Requirements
- Fuses 4, 5, 13, 23, 24, and 27 OK
- Ground connections OK.
Procedure
- Switch OFF ignition
- Connect Scan Tool VAG 1551 using adaptor cable VAG 1551/1 to DLC.
Fuse/Relay Panel:
- First connect black adaptor cable connector (voltage supply) to DLC # C. 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. Testing and Inspection
- Connect white adaptor cable connector to DLC # D.
- 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
DTC memory reading and erasing (function 02):
- Check with engine idling.
Note: If engine does not start, crank engine 4 to 6 seconds and leave ignition switched ON.
Output Diagnostic Test Mode (function 03):
- Switch ignition ON, but do not start engine.
Basic Setting (function 04):
- Let engine idle or switch ignition on.
Erase DTC Memory (function 05):
- Check with engine idling, leave ignition switched on after checking the DTC memory.
End Output (function 06):
- Engine idling or ignition on.
Code Control Module (function 07):
- Switch ignition ON.
Read Measuring Value Block (function 08):
- Let engine run and/or switch ignition ON.
Read Individual Measuring Values (function 09):
- Let engine idle at operating temperature.
Adaptation (function 10):
- Let engine idle.
Operating Mode
- 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: 8A0 906 266 B. Display will appear as follows:
8A0906266B V6 2.8 2V MPI V6 AC39 DOB
Coding 003 WSC 06812
- Display breakdown is as follows:
^ ECM identification: 8A0 906 266 B (example)
^ Engine design: V6
^ Engine displacement: 2.8 liter
^ Number of valves per cylinder: 2 valves
^ Fuel injection system: MPI = Multi-Point Injection
^ ECM software version: V6 (EPROM status of ECM)
^ ECM hardware/software version: DOB (ECM program status)
^ Coding: 003
^ Dealer number whose VAG 1551 scan tool was used to carry out the last coding or adaptation: WSC ______
- Check for correct ECM coding, Refer to ECM Coding Programming and Relearning
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 Memory 02
[1][2]Reading Diagnostic Trouble Codes
- Output Diagnostic Test Mode 03
Output Diagnostic Test Mode (DTM)
- Basic Engine Setting 04
Basic Setting (Function 04)
- Erase DTC Memory 05
[1][2]Reading Diagnostic Trouble Codes
- End Output 06
Ending Output (Function 06)
- Code Control Module 07
Programming and Relearning
- Read Measuring Value Block 08
Read Measuring Value Block (Function 08)
- Adaptation 10
Adaptation (Function 10)
- 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