Connecting and Operating VAG 1551 Scan Tool
REQUIREMENTS- Fuses 7, 8 and 14 in passenger side footwell - OK
- Ground connections for transmission - OK
- Check ground connections for corrosion or damage, repair as necessary.
- Battery ground strap and ground strap between battery and transmission - OK
- Selector lever in "Park" and parking brake applied.
PROCEDURE
- Switch OFF ignition
Data Link Connector Location:
- Raise vehicle hood and locate Auxiliary Relay Station I (drivers side cowl area) and the Data Link Connectors (DLC).
Connecting VAG 1551:
- 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. 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
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
RAPID DATA TRANSFER
After selecting operating mode Rapid data transfer select diagnostic function.
- Engine Electronics 01
- Transmission Electronics 02
- Press 0 and 2 buttons to select address word 02 "Transmission Electronics".Display will appear as follows:
Rapid data transfer Q
02-Transmission Electronics
- Press Q button to enter input. The control module identification number is indicated via the display. Display will appear similar to the following example:
4A0927156AB AG4 01K 2.8l 2V USAD....
Coding 0000 WSC 06812
- Display breakdown is as follows:
^ 4A0927156AB - Control Module Part Number
^ AG4 01K - 4-Speed Automatic transmission 01K
OR
^ AG4 01F - 4-Speed Automatic transmission 01F
^ 2.8l - Engine displacement
^ 2V - Number of valves per cylinder
^ D.... - EPROM status
^ 0000 - Coding
^ WSC 06812 - Dealer number whose VAG 1551 scan tool was used to carry out the last coding.
- Check for correct TCM coding, Refer to Control Module Coding
- 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
- Output Diagnostic Test Mode 03
- Erase DTC Memory 05
- End Output 06
- Code Control Module 07
- Read Measuring Value Block 08
- 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