Connecting and Selecting Functions

V.A.G 1551 Scan Tool, connecting and selecting function

Note:
- All functions which could previously be performed V.A.G. 1551 can also be performed with the new tester VAS 5051.
- The ABS function is switched off in the control module during the On Board Diagnostic (OBD).
- The Diagnostic Trouble Code (DTC) memory can be erased after successful checking and repair.





- Pull cover -1- off in direction of arrow.
- With ignition switched off connect VAG 1551 using cable VAG 1551/3(A) to Data Link Connector
Connecting VAS 5051.





Indicated on display
1) Is displayed alternately

Note: If there is no indication on display, check DLC, Electrical checks 01-102, test steps 14 and 15.

^ Depending on the program, additional operating information can be printed out by pressing the HELP key of V.A.G. 1551.
^ The (arrow) key is used for moving forward within the program.

- The PRINT key is used for switching on the printer (warning lamp in key comes on).
- Switch ignition on.
- Switch on printer with Print key (indicator lamp in key lights up).
- Press key -1- for "Rapid data transfer" operating mode.





Indicated on display
- Press keys -0- and -3-; 03 inputs the address word of the vehicle system to be tested "Brake electronics".





Indicated on display
- Confirm input with Q key.





Display shows e.g.
Displayed is:
- The control module identification number.
e. g. (1 JO 907 379 D)
Allocation of control module
Refer to Parts supplier
- System designation (ABS 20 IE)
- Data BUS present. (CAN)
- Control module code (03604).
Coding control module
- Workshop code
Refer to V.A.G 1551 Scan Tool operating instructions
If the control module identification number does not appears Summary of selectable functions
- Press (arrow) key.





Indicated on display (select function, e.g. 02 Check DTC memory).





Indicated on display
By pressing the HELP key, a list of possible fault causes is printed out.
- After eliminating possible causes of malfunctions, enter the address word 03 for "Brake electronics" again and confirm.
If "Control module does not answer!" again appears:





Indicated on display
- Perform test steps 1, 2 and 3 from Electrical check.





- malfunctions have occurred during checking of control module identification (possibly influenced from external sources?)

- Check DLC as well as voltage supply and Ground connection for ABS control module -J104-, Electrical check.
- After repairing possible causes of malfunction, again enter address word 03 for "Brake electronics" and confirm with Q key.





List of selectable functions