VAG1551 Scan Tool, (ST) Connecting and Selecting Functions

All functions previously performed with the VAG1551 can also be performed using the VAS5051 tester in operating mode "Vehicle Self-Diagnosis":

Special Tools and Equipment





^ VAG1551 Scan Tool (ST) or VAG1552 mobile scan tool





^ VAG1551/3B cable
^ During On Board Diagnostic (OBD), the ABS function is switched off in the control module.
^ DTC memory can be erased after repair has been completed and DTC memory has been checked.

^ Unclip cover for Data Link Connector (DLC) from instrument cluster.





^ Connect VAG1551 Scan Tool (ST) to Data Link Connector (DLC) using VAG1551/3B cable with ignition switched off.
^ Connect VAS5051.





Indicated on display:
1) Appear alternately on display
If nothing is indicated on the display, check the harness connector for On Board Diagnostic (OBD), Test step 13 and 14

^ Depending on the program, additional operating information can be printed out by pressing the HELP button of the VAG1551 scan tool.
^ The -> button is used for advancing through the program sequence.
^ The PRINT button is used for switching on the printer (lamp in button lights up).
^ Switch on ignition.
^ Switch printer on via the print-button (indicator lamp in button lights up).
^ Press button -1- to select "Rapid data transfer" operating mode 01.





Indicated on display:
^ Press buttons -0- and -3- (03 is the address word for the vehicle system to be tested, "brake electronics").





Indicated on display:
^ Press -Q- button to confirm input.





and then the information is indicated:

Indicated:
^ The control module identification number. e.g. (703907379 A).
^ Allocation of the control module
Refer to Parts Supplier
^ The system identification (ABS/EDL).

If the control module identification number does not appear, Refer to Overview of selectable functions.
^ Press -> button.





Indicated on display; (function selection, e.g. 02 "Check DTC Memory").





Indicated on display:
^ Press the -HELP- button to print out an overview of all of the possible malfunction causes.
^ After repairing potential malfunction causes, re-enter address word 03 for "brake electronics" and confirm.

If "Control module not responding!" is indicated again:





Indicated on display:
^ Electrical test, carry out steps 1, 2 and 3.





Malfunctions occurred while checking the control module identification (possible external sources?)
^ Check diagnostic cable as well as the voltage supply and Ground (GND) connection for the ABS control module (w/EDL) -J104-, Electrical Test.
^ After repairing potential malfunction causes, re-enter address word 03 for "brake electronics" and press -Q- button to confirm.